Sculpting Life: Organic Forms in 3D Art

Article / 30 September 2024

Content

  1. Creating a Bust of an Elderly Man: Week I
  2. Creating a Bust of an Adult Woman: Week II
  3. Creating a Bust of an Adult Man: Week III
  4. Creating a Bust of an Elderly Male: Week IV
  5. Creating a Bust of a Young Male: Week V
  6. Creating a Bust of a Young Adult Woman: Week VI
  7. Creating a Self-Portrait Bust

Introduction

Organic forms play a significant role in artistic expression, used to depict natural shapes in various works of art. The process of conceptualizing and creating organic forms requires a deep understanding of natural shapes, proportions, and the use of different techniques and tools to create dynamic and convincing pieces.

This work focuses on the analysis and organization of organic forms using ZBrush to create digital sculptures. As described in [1], it’s important to adhere to natural shapes and proportions, using lines and textures to add depth and dimension to the artwork.

This blog will describe the process of creating sculptural solutions based on analyzed organic forms. It will explore the use of specific tools to achieve the final sculptural solution, as well as the methodologies for developing artwork, as outlined in [2].

Additionally, it will document my personal journey in creating sculptures in ZBrush based on various references. Through this process, I’ll evaluate solutions to artistic challenges in terms of form, character, and anatomy, while identifying potential alternatives or improvements to the artistic results.


[1]        3D Total Publishing (ed.) (2017) The Artist’s Guide to the Anatomy of the Human Head. Worcester, UK: 3D Total Publishing.
[2]        P. & C. Faraut, „Portrait sculpting: anatomy & expressions in clay”, 1st ed., Honeoye, N.Y. : PCF Studios, 2004, ISBN-13: 978-0975506509.


1. Creating a Bust of an Elderly Man: Week I

This project focuses on the creation of primary, secondary, and initial tertiary forms for a male bust, using reference photos for guidance. The process begins with a basic sphere, from which we define the relationship between the volume and character of the shape, aiming to capture the likeness. By observing how light and shadow fall on the face in the reference photos, we establish the planes and volume.

1.1. Analysis and Interpretation of Organic Form

  • The sculpture of the elderly man's head demonstrates a solid balance between volume and space, with minimal emphasis on facial details while focusing on the overall volume of the head.
  • The surface of the sculpture is crafted with significant attention to planes and edges, contributing to the expressiveness and depth of the head’s appearance.
  • The anatomical solution of the cheekbone lacks precision, making the perception of the head’s volume more challenging.
  • Overall, the sculpture exhibits notable qualities in terms of planes and lighting, but more work is needed to refine the anatomical accuracy.

2. Creating a Bust of an Adult Woman: Week II

This project involves the creation of primary, secondary, and initial tertiary forms for a female bust, using reference photographs as a guide. The process begins with a basic sphere, from which we define the relationship between the volume and the character of the shape, aiming to achieve likeness. As in the previous project, we carefully observe how light and shadow interact with the face in the reference photos, allowing us to define the planes of the volume.

2.1. Analysis and Interpretation of Organic Form

  • The head of the young woman is sculpted in a simple and symmetrical manner, conveying a sense of stability and calm. However, some shortcomings prevent this work from fully achieving a sense of rhythm.
  • The relationship between volume and space is straightforward and direct. The head is defined by clear lines and shapes, giving the impression that the sculpture is primarily focused on form.
  • The planes and edges are adequately precise, providing a technically sound appearance. However, the area around the eyes and forehead lacks definition, leaving the head of the woman somewhat vague and unclear. As a result, the character of the woman is not fully captured.
  • Overall, the piece shows potential, but more work could be done to improve expression and precision.

This week’s focus was on refining symmetry and structure, but it also highlighted the importance of capturing expression through subtler forms, particularly around the eyes and forehead.

3. Creating a Bust of an Adult Man: Week III

This week’s project focuses on creating primary, secondary, and initial tertiary forms for a male bust using reference photographs. The process begins with a sphere, from which the relationship between volume and the character of the form is defined, aiming for likeness. By observing how light and shadow fall on the face in the reference photos, we determine the volume’s planes.

3.1. Analysis and Interpretation of Organic Form

  • The sculpture of an adult man in middle age with a striking appearance creates a strong and expressive composition. The 3D render emphasizes these aspects.
  • Although the sculpture is not entirely symmetrical, it creates a dynamic rhythm and good balance.
  • The relationship between volume and space is clearly defined, with expressive facial contours and precise detailing. The planes and edges are well-articulated, with clearly defined contours and solid shaping.
  • Despite some shortcomings, such as the soft and undefined shape of the neck, the bust manages to convey expression and character. Additionally, the shape of the cheeks is not entirely correct, and the facial expression doesn’t fully capture the person’s character.
  • Overall, the sculpture represents an interesting and challenging work that requires further refinement.

This project emphasizes the importance of balancing symmetry with expressiveness, while identifying areas such as the neck and cheeks that need additional attention for better anatomical accuracy.

4. Creating a Bust of an Elderly Male: Week IV

This week’s work involves forming the primary, secondary, and initial tertiary shapes of an elderly male bust, based on reference photographs. Beginning with a sphere, we define the relationship between volume and form to achieve a likeness. Observing how light and shadow interact with the face in the reference photos, we establish the planes of the volume.

4.1. Analysis and Interpretation of Organic Form

  • The sculpture represents an elderly male bust that captures specific features in the appearance. The 3D rendering highlights these characteristics.
  • The composition is slightly asymmetrical, which adds to the sense of character.
  • Rhythm is achieved through contrasting smooth and rough textures on the face. The volume is well-expressed, providing a clearer sense of depth and space, which creates the impression that the figure truly exists in three-dimensional space.
  • The planes and edges are precisely defined, contributing to realism and making it easier to observe the details.
  • However, the area around the eyes lacks a fully lifelike expression. Further study of the periorbital bone structure could enhance this aspect of the work.

This sculpture emphasizes the impact of asymmetry and textured contrast, along with the importance of detail precision around the eyes for a more lifelike expression.

5. Creating a Bust of a Young Male: Week V

This week's work focuses on forming the primary, secondary, and initial tertiary shapes of a young male bust, guided by reference photographs. Starting from a sphere, we define the relationship between volume and the character of the form to achieve similarity. Observing how light and shadow fall across the face in the reference images helps establish the planes of volume.

5.1. Analysis and Interpretation of Organic Form

  • The sculpture represents a young male bust with a distinctive appearance; the nose is slightly indented, giving it a boxer-like look. This characteristic is emphasized in the 3D rendering.
  • Rhythm is achieved through the contrast between smooth and rough textures on the face (such as the beard and mustache) and the interaction between the hair and face.
  • The well-expressed facial volume enhances the sense of depth and space. While the head is anatomically accurate, the nose is exaggerated in volume to better convey character.
  • The planes and edges lack precise definition, which detracts from a sense of realism. Additionally, the face's form is too soft, which does not effectively convey the person's character.
  • Additional details, such as facial musculature or a more expressive eye area, could improve this aspect of the work.

This week’s sculpting emphasizes creating depth and character through texture contrast, though further refinement in facial structure and expression would enhance the overall realism.

6. Creating a Bust of a Young Adult Woman: Week VI

This phase of work focuses on crafting the primary, secondary, and initial tertiary forms of a young adult female bust, guided by reference photographs. Beginning with a sphere, the aim is to establish the relationship between volume and the form’s character, achieving resemblance. By studying how light and shadow fall on the face in the reference images, we define the planes of volume.

6.1. Analysis and Interpretation of Organic Form

  • The sculpture represents the head of a young adult female (Images 27, 28, 29, 30) with an emphasis on balanced volume and spatial relationship, elegantly capturing the distinct facial features and clear contours of the head.
  • The planes and edges are carefully defined, contributing to a realistic appearance and enhancing the expressiveness of the character.
  • One noted shortcoming is the lack of liveliness in the gaze, which might be due to insufficient precision in defining the eye area, making it appear less expressive.
  • Overall, the sculpture demonstrates significant qualities in terms of plane accuracy and lighting, yet further refinement in facial expression would enhance its impact.

This week’s focus was on achieving a harmonious balance in form and detailing, aiming for realism in structure. With more attention to expressiveness, especially around the eyes, the character’s liveliness could be further brought to life.

6.2. Transformation of the Organic Form

In this chapter, we explore the transformation of an adult female bust into an animalistic form. After defining the primary and secondary forms and giving the sculpture a portrait-like character (analyzed in Chapter 6.1), we attempt to create a creature that combines both snake and human elements. The main idea of this project is to retain the characteristics of the person while emphasizing the attributes of a snake. For this project to be successful, a balance must be achieved in expressing both characters; if one character dominates too strongly, the other will be overshadowed.

6.2.1 Analysis of the Transformed Form

  • The composition of the sculpture is directed upward, with the female portrait transforming into a snake. Balance is achieved through the symmetrical arrangement of head elements, with the female portrait centered, and the snake features symmetrically distributed on each side.
  • The volume of the female head is precisely defined, while the volume of the snake parts is less refined, suggesting outlines rather than full form. Space is utilized to create an illusion of depth and dynamism, using shadow and perspective.
  • In summary, this sculpture successfully balances the characteristics of both the adult female and the snake. This is achieved through the precisely defined forms and volumes of the female head and body, while suggesting the contours of the snake. For an even stronger effect, further refinement of the snake’s volumes and forms would enhance the overall impact.

7. Creating a Self-Portrait Bust

The process involves sculpting the primary, secondary, and the beginnings of tertiary forms of a self-portrait bust based on reference photographs. We start by shaping the basic sphere and then define the relationship between volume and form to achieve likeness. By observing how light and shadow fall on the face in the reference photos, we define the planes of the volume.

7.1. Analysis and Interpretation of the Organic Form

  • The self-portrait is a sculpture of an adult male figure (Figures 36, 37, 38, 39). [9] – A 3D representation.
  • The composition of the work is independent and informal, which conveys a sense of freedom and creativity in the use of space. The relationship between volume and space is focused on the expressiveness of the face, with emphasis on features such as the eyebrows, nose, and lips.
  • The planes and edges are sharply defined, contributing to the realism and vibrancy of the head's appearance.
  • However, a shortcoming is that the eyes are not sufficiently detailed, which makes it harder to perceive the emotions and facial expressions.
  • Overall, the self-portrait is a successful piece in terms of planes, light, and anatomy, with a minor flaw in the rendering of the eyes.
Report

Artistic Techniques in Digital Sculpting: Form and Shape in ZBrush (Vol. 5)

Article / 25 September 2024

Abstract

This article focuses on organic sculptural forms and the artistic approach to creating sculptural solutions using the user interface and current industry standards of digital sculpting software, specifically ZBrush.

The work follows the methodology of sculpting through primary, secondary, and tertiary forms. Through various sculptural solutions, the article examines and reflects on form in an artistic way, considering shape characteristics, primary forms, and silhouette.

Student: Albert Gregl

Mentor: doc. dr. sc. Winton Afrić

1. The Role of Individual Segments in Digital Forms

2. Use of Specific Tools During Digital Sculpting

3. Analysis and Comparison of Digital Sculptures

4. Evaluation of Specific Sculpting Methodologies in Context

5. Digital Sculpting Using Perceptive/Receptive Methods

Let’s take a look at Image 11 and how the individual segments of the sculpture are organized:

a) The body of the hippopotamus, where we can also see the silhouette of this segment of the sculpture.

b) The head of the hippopotamus, which is open, and the methodology for this will be explained later.

c) The nails—according to the anatomical atlas, the hippopotamus has four joints, totaling (16) segments.

d) The eyes—each eye consists of two spheres, which is necessary for applying different materials.

e) The bird—it is not the main subject of this sculpture, so its solution is stylized; the bird consists of (4) segments (body, beak, eyes, legs).

f) The teeth and tongue—there are a total of (15) segments.

We see that the segments of the sculpture are divided into multiple pieces of geometry as explained in the previous chapters.

Notice the head in Image 11, where a new methodology has been applied to this piece of geometry.

By inserting inverse shapes, we cut out the cavity that we’ve called the hippopotamus's mouth.

Each segment has its material assigned in ZBrush’s 3D space; these materials show the surface characteristics of a piece of geometry, e.g., shiny or matte.

The sculpture represents a complete and somewhat anatomically correct solution for the hippopotamus.

The goal of this sculpture is to define the secondary forms of the large and small surfaces of the body and head of the hippopotamus as accurately as possible.

The sculpture’s body less faithfully shows some anatomical parts, such as the hind legs and tail, but the front part around the head tries to define how the hippopotamus is positioned in space through the folds of the skin.

Finally, Image 12 shows the fully realized hippopotamus sculpture. Details can be viewed in an online 3D viewer, as with previous sculptural solutions.

Final look at the hippopotamus in 3D space:


Report

Artistic Techniques in Digital Sculpting: Form and Shape in ZBrush (Vol. 4)

Article / 18 September 2024

Abstract

This article focuses on organic sculptural forms and the artistic approach to creating sculptural solutions using the user interface and current industry standards of digital sculpting software, specifically ZBrush.

The work follows the methodology of sculpting through primary, secondary, and tertiary forms. Through various sculptural solutions, the article examines and reflects on form in an artistic way, considering shape characteristics, primary forms, and silhouette.

Student: Albert Gregl

Mentor: doc. dr. sc. Winton Afrić

1. The Role of Individual Segments in Digital Forms

2. Use of Specific Tools During Digital Sculpting

3. Analysis and Comparison of Digital Sculptures

4. Evaluation of Specific Sculpting Methodologies in Context

The creation of the sculpture in Image 10 begins as described in Chapter 2.2. After defining the silhouette and primary form of the sculpture, we shape the secondary forms of the skull, followed by the muscles and tissues around the head.

The hair and beard of the sculpture are developed according to the principles shown in the book [Portrait Sculpting: Anatomy & Expressions in Clay by Philippe Faraut]; we add geometric volumes to the bust’s tissue and shape them using the tools described in Chapter 2.2.


ZBrush also offers other options for creating hair and fur that look very realistic, similar to the appearance of hair in the reference photo. However, since this work focuses on form in an artistic way through primary, secondary, and tertiary shapes, such a tool in ZBrush is not necessary for this project.

The double chin of the bust is not fully defined, but it somewhat faithfully depicts the behavior of skin and tissue in that part of our subject. Only after resolving all secondary forms do we move on to the tertiary shapes, such as skin texture, facial pores, and strands of hair and beard.

In conclusion, the orangutan bust realizes all the segments of work described in the previous chapters and attempts to improve each of the previously mentioned methodologies.

This is final look on forth project that is demonstrating evaluation of specific sculpting methodologies in context:

5. Digital Sculpting Using Perceptive/Receptive Methods

Report

Artistic Techniques in Digital Sculpting: Form and Shape in ZBrush (Vol. 3)

Article / 11 September 2024

Abstract

This article focuses on organic sculptural forms and the artistic approach to creating sculptural solutions using the user interface and current industry standards of digital sculpting software, specifically ZBrush.

The work follows the methodology of sculpting through primary, secondary, and tertiary forms. Through various sculptural solutions, the article examines and reflects on form in an artistic way, considering shape characteristics, primary forms, and silhouette.

Student: Albert Gregl

Mentor: doc. dr. sc. Winton Afrić

1. The Role of Individual Segments in Digital Forms

2. Use of Specific Tools During Digital Sculpting

3. Analysis and Comparison of Digital Sculptures

The head/bust sculptures in Image 9 depict different subjects:

  • a) Krampus,
  • b) Frankenstein, and
  • c) a portrait of a person.
Reflecting on the definition of primary and secondary forms, as well as the anatomy of the human skull, we conclude that the sculptures from a) to c) show a clear progression in the anatomy of the head/skull and more faithfully define the shape.

Sculpture a) has significantly softer forms, particularly noticeable on the face, while sculpture c) has much more accurately defined forms.

The secondary forms in sculptures a) and b) are not fully clear, while sculpture c) attempts to define them as accurately as possible, including how they interact with adjacent planes.

Sculpture c) anatomically accurately represents the arrangement of bones in the female skull, while sculptures a) and b) show obvious deficiencies in the arrangement of bones, e.g., the jaw (lat. corpus mandibulae) in sculpture a) and the frontal bone (lat. squama frontalis) in sculpture b).

4. Evaluation of Specific Sculpting Methodologies in Context

5. Digital Sculpting Using Perceptive/Receptive Methods

Report

Artistic Techniques in Digital Sculpting: Form and Shape in ZBrush (Vol. 2)

Article / 04 September 2024

Abstract

This article focuses on organic sculptural forms and the artistic approach to creating sculptural solutions using the user interface and current industry standards of digital sculpting software, specifically ZBrush.

The work follows the methodology of sculpting through primary, secondary, and tertiary forms. Through various sculptural solutions, the article examines and reflects on form in an artistic way, considering shape characteristics, primary forms, and silhouette.

Student: Albert Gregl
Mentor: doc. dr. sc. Winton Afrić

1. The Role of Individual Segments in Digital Forms

2. Use of Specific Tools During Digital Sculpting

2.1. Basic Tools and the “Frankenstein” Project

The “Frankenstein” project – head/bust (Image 4) – is ideal for beginners because the artistic problem allows for mistakes in head anatomy.

It was created using just a few tools ('Brush', Image 3) in ZBrush.

The segments of the sculpture (Image 5), such as the teeth, eyes, and hat, are organized as described in Chapter 1.

2.2. Brief Description of Digital Sculpting Using ZBrush

We start by opening ZBrush’s basic project (standard project) 'DynaMesh_Sphere_32.ZPR', which is essentially a sphere from which we begin, as described in Chapter 1.

It is necessary to set the camera angle in 3D space to 28.6° to make the sculpture display as realistic as possible; > Standard menu list > Draw > Camera Angle of View > 28.6°.

We model the digital sphere using a tablet and stylus, as this allows us to control the pressure and angle with which we move points in 3D space.

Image 6 shows the application of tools used in sculpting, which will be described in more detail.


The idea is to move away from the spherical shape as quickly as possible, which is easily achieved using the 'SnakeHook' tool to stretch the geometry.

The size of each tool ('Brush') can be adjusted using 'Draw Size', and it is crucial to adjust this size to express all desired shapes; the same idea applies to adjusting the tool’s intensity ('Z Intensity').

In other words, we choose the size/thickness of the brush according to the need with which we want to “paint” in 3D space.

To create sharp edges and carve into the geometry, we use the 'DamStandard' tool, and to add or subtract geometry, we can use the 'ClayBuildup' tool, taking care to adjust the tool's size and intensity.

During the sculpting process, we remain in symmetry as long as possible until we resolve the primary and secondary forms; to define the planes of secondary forms, we can also use the 'SmoothStronger' tool.

Image 7 shows a case where polygons are uneven and can no longer faithfully represent the desired geometry.

The 'DynaMesh' tool is used to add resolution or fix various anomalies in the shape structure.


The 'DynaMesh' tool works best when a piece of geometry is sized at 2, i.e., the relative size ratio along the X, Y, and Z axes is approximately 2.

After using the 'DynaMesh' tool, the structure can easily be divided into 'SubDivisionLevels' as described in Chapter 1.

The example in Image 8 shows the use of the masking tool ('MaskPen') and previously mentioned tools to create the ear of the sculpture.

This is final look on second project that is demonstrating the use of use of specific tools during digital sculpting:

3. Analysis and Comparison of Digital Sculptures

4. Evaluation of Specific Sculpting Methodologies in Context

5. Digital Sculpting Using Perceptive/Receptive Methods

Report

Artistic Techniques in Digital Sculpting: Form and Shape in ZBrush (Vol. 1)

Article / 28 August 2024

Abstract

This article focuses on organic sculptural forms and the artistic approach to creating sculptural solutions using the user interface and current industry standards of digital sculpting software, specifically ZBrush.

The work follows the methodology of sculpting through primary, secondary, and tertiary forms. Through various sculptural solutions, the article examines and reflects on form in an artistic way, considering shape characteristics, primary forms, and silhouette.

Student: Albert Gregl
Mentor: doc. dr. sc.
 Winton Afrić

1. The Role of Individual Segments in Digital Forms

For example, let's consider the sculptural solution of a human skull or head as described in the book [Portrait Sculpting: Anatomy & Expressions in Clay by Philippe Faraut].

We begin the creation of a digital sculpture in the same way—by starting with the creation of a sphere (Image 1), similar to how one would use a ball of clay to create a non-digital head.

This sphere contains a minimal number of polygons that will represent the primary forms and silhouette. As we start resolving the secondary forms of the head, the need for a higher resolution in the digital form arises. To increase the resolution, its geometry is divided into 'SubDivisionLevels'.

For instance, the initial sphere contains 2800 vertices, while the fourth level ('SDiv 4') can have 180000 vertices. The more vertices (or polygons) we have, the more details we can represent. The created sphere essentially represents one 'Subtool'.

Image 2 shows a head modeled from a sphere, along with additional 'Subtools', i.e., pieces of geometry representing the eyes, teeth, and jewelry in this example. The reason for dividing the sculpture into multiple 'Subtools' is to make it easier to shape individual pieces of geometry.

On the right side of Image 2, we see the details of the teeth, with each pair of teeth marked in a different color representing a separate 'Polygroup'. Both 'Polygroup' and 'Subtool' are used to organize pieces of geometry, and such division makes it easier to manipulate in 3D space, e.g., adding materials, colors, and basic transformations.

The difference between 'Polygroup' and 'Subtool': 'Subtools' create separate pieces of geometry, while 'Polygroups' create separate areas of geometry and/or individual pieces of geometry.

This is final look on first project that is demonstrating the roles of individual segments in digital form.

2. Use of Specific Tools During Digital Sculpting

3. Analysis and Comparison of Digital Sculptures

4. Evaluation of Specific Sculpting Methodologies in Context

5. Digital Sculpting Using Perceptive/Receptive Methods

Report