Showing posts with label geometric shapes. Show all posts
Showing posts with label geometric shapes. Show all posts

Thursday, April 16, 2009

Painting values from life: black and white geometric grouping, student work

So far, over the past two posts, I've highlighted four students and their paintings of cubes and spheres. The third project my Introduction to Painting students worked on was a grouping of geometric solids.

I have to admit that I over-extended my students with this particular exercise. Though I'm a firm believer in challenging people so they can grow, this project was too much of a leap for them. Neither I nor my students were particularly happy with the results. What I ended up doing with them individually was to look at snapshots within their work that showed me they were building upon and applying the skills and techniques they've been developing from the beginning. Having said that, here are the two student pieces ...








Student #1
What he did well:
  • Rendering some of the values and shadows effectively (see left side of piece)
  • Determining the perspective of the boxes well
  • Maintaining the proportional relationship between the objects
  • Centering the grouping well considering its complexity
What he needs to work on:
  • Rendering his shapes crisply so they look substantive, less fuzzy
  • Completing each object equally so no one element is left as seemingly unfinished
  • Ensuring that the shadows (both on and between the objects) clearly communicate the position of the light source
  • Comparing the value relationships in his painting with those on the still life to ensure the composition coheres
  • Understanding how layering operates within a painting so that objects communicate a believable sense of space







Student #2
What she did well:
  • Rendering her edges crisply so objects don't look fuzzy
  • Maintaining the proportional relationship between the objects
  • Centering the grouping well considering its complexity

What she needs to work on:
  • Rendering her shadows effectively
  • Completing each object equally so no one element is left as seemingly unfinished
  • Maintaining proper perspective within the composition so some shapes don't appear distorted
  • Ensuring that the shadows (both on and between the objects) clearly communicate the position of the light source
  • Understanding how layering operates within a painting so that objects communicate a believable sense of space
Project Overview
As I stated at the beginning of this post, I made an error in judgment with this assignment. I should have set up a couple of small geometric groupings instead of one large one. It would have made for a less frustrating assignment for them. As such, no one really rendered the grouping well. At least, the concepts from the first and second assignments that were difficult for my newbie painters provided opportunity for practice and reinforcement with this :
  • Composing your painted space
  • Rendering shapes effectively by maintaining consistent angles (i.e., perspective) for each form
  • Translating the effects of light as they pass across a three dimensional solid
  • Using value (instead of line) to delineate edges
  • Achieving a sense of space through proper placement and effective use of shadow
Space Planning
Centering objects or composing objects within a painting is forever the headache regardless of your skill level. It takes practice and know-how to make judgment calls on what to include and not include. As with the other two assignments, the issue was centering the objects and not making them too big or too small. The students were not permitted to remove or ignore objects at this time. Laziness reared its ugly head again as many students refused to redraw their work once they got far enough along to realize it was off center or that the elements weren't going to work.

Perspective
I reminded the students of the simple formula for rendering a solid. Namely, you begin with the bottom angle--double checking the lines of your angle using your paint brush--and then fill in the rest of the form using lines that are perpendicular and parallel to the bottom angle you started with. While this technique is not 100% foolproof it provided them with something tangible to get them started and help them achieve more naturalistic results.

As with the first two students, student #2 got the bottom angle correct but when she rendered the top of the square in the center she opened up the shape making it appear she could see more of the top than she actually could.

Value
Ensuring a sense of continuity between values and shapes within the composition by asking oneself "Does the value I just painted appear elsewhere in the composition?" was something I brought up and tried to hammer home with my students. A couple "got" it and implemented it but only to a small degree because they stopped remembering to ask themselves that question as their work progresses.

Many of the students stopped looking at the real-world still life and started making up values they thought should be there only to realize that sections of their paintings no longer looked coherent. As I walked around observing their work, I found myself reminding them that value is a tough concept because it's not only about seeing the value but putting it on canvas.

Overall, lesson learned ... by the student and the teacher!

Tuesday, April 14, 2009

Painting values from life: black and white spheres, student work

Yesterday's post highlighted two of my Introduction to Painting students. The classes first project was to render cubes in black, gray and white that were set up in the center of the room. The goal was to teach them to painting values from life. None of my students had painted before so the outcome was a good one; most of them did well. Today's post reinforces this as I focus on two other pieces of work from two other students.

The second project was to introduce another geometric shape, this time a sphere. If you have recommendations for additional projects to teach these concepts or you have changes to these projects please let me know.








Student #1
What he did well:
  • Seeing the value changes as light passed over each form
  • Rendering the forms' values with paint
  • Maintaining a circular shape
  • Spacing his objects consistently (both on canvas and between his objects)
What he needs to work on:
  • Communicating space through the effective use of shadows (he simply didn't put them in)
  • Rendering his shapes so edges are crisp and the gray underpainting isn't visible








Student #2
What she did well:
  • Seeing the value changes as light passed over each form
  • Rendering the forms' values with paint (though her forms look a little lumpy in spots)
  • Spacing his objects consistently (both on canvas and between his objects)
  • Integrating the shapes with the space using shadow
What she needs to work on:
  • Maintaining a circular shape (when reviewing her work, we both agreed that her shapes were a little sloppy)
  • Communicating space through the effective use of shadows (he simply didn't put them in)
  • Shaping shadows so they are more naturalistic given the light source's location
Project Overview
As I indicated earlier, this lesson is deceptive due to the many layers and concepts students have to integrate into applicable skills. These can be difficult to "get" all at once:
  • Composing your painted space
  • Rendering shapes effectively
  • Translating the effects of light as they pass across a three dimensional solid
  • Using value (instead of line) to delineate edges
  • Achieving a sense of space through effective use of shadow
Space Planning
For this exercise, the issue was centering the objects and not making them too big or too small. So, it wasn't too complicated and the issue for many of my students was laziness in not wanting to make changes or start over it once they did it once. Making judgment calls about possibly excluding objects for to increase focus or add interest didn't come into play for this exercise.

Shape and Perspective
Integrating objects into a believable environment for this type of exercise centered on creating believable circular shapes, rendering the light passing across the form so that the shapes look hard and not lumpy and placing naturalistic shadows relevant to the light source. In my demonstration, I showed students how to adjust the shape and size of their circular form. You'll notice in that demonstration, the black sphere still remained rather un-circular while the other two were corrected.

For most of the students, the shadows proved challenging; getting their shape and perspective took some time and individual teaching. I'm sure I'll need to reinforce that lesson when circular shapes are reintroduced in a full still life setup in a few of weeks.

Value
Value has got to be one of the toughest concepts to master because it's not merely about seeing (which is problem #1) but also about translating it to canvas now that you know what you're looking at.

When I first taught this lesson last semester, I had the students do a color chart and simple value scale. I didn't have this semester's students do that because of the time involved. That was a mistake. I was surprised that I had a couple of students who didn't see the differences in dark and light at all; they were completely baffled. While they somewhat get it now, I think doing a simple value scale would help.

To get my students started, I have them "sketch" on the canvas using thinned-out paint. This is hardly new or revolutionary. However, in starting this way many of my students got stuck in "coloring book mode." You know, outline it and then fill it in. I had to remind them that the real world doesn't have edges (i.e., it isn't outlined) and that outlining is merely a convention artists use to talk about changes in value, color or space. Seeing things three dimensionally is something we take for granted until we have to take the 3-D world and translate it on a 2-D surface.

Recommendations Anyone?
Overall, I think these two particular students did real well with this second exercise. In an upcoming post, you'll see how others managed the follow-up exercise rendering a geometric grouping. As always, your feedback and thoughts are coveted--especially if you have recommendations for additional exercises or modifications to my approach outlined above to teach these basic painting principles.

Black and White Geometric Shapes: My High School Student's Work

As promised (okay, maybe a little late), I'm posting a couple of my student's pieces from last month's projects in my Introduction to Painting class. The first assignment was to render three cubes in black, gray and white. The objects were set up in the center of the room with appropriate lighting. Overall, most of my students did well considering none of them had ever painted before. I'm going to highlight two students who did particularly well.

The students' work that I'm highlight today shows a few issues that were prevalent in the class that caused performance hiccups here and there. If you have recommendations how I might better teach these principles, please don't hesitate to let me know!







Student #1

What he did well:
  • Seeing the value changes as light passed over each form
  • Rendering the forms' values with paint
What he needs to work on:
  • Spacing his objects, both on the canvas and from one cube to the next
  • Maintaining consistent perspective (notice how you can see too much of the tops of his boxes because the back angle/edges of the white and gray boxes do not match the bottom angle/edges; the form ends up looking distorted)
  • Rendering shadows consistently (notice the shadow for the white box is hard while the other two are more naturalistic)
  • Communicating space (the backdrop was right up against the cubes so their shadow should be traveling up the backdrop and not giving the impression they are going off the edge of a table)






Student #2

What she did well:
  • Seeing the value changes as light passed over each form
  • Rendering the forms' values with paint
  • Spacing her objects consistently (both on canvas and between her objects)
  • Maintaining proper perspective for each cube
  • Translating the shadows consistently
What she needs to work on:
  • Communicating space (as with student #1, she didn't notice that the shadows interacting with the backdrop so it appears that they travel off the edge of the table; also, her horizon line places her shapes into the backdrop)
  • Defining edges using value instead of an outline
  • Rendering her shapes so edges are crisp and the forms look hard versus soft
Project Overview
This lesson is deceptive: there are many layers and concepts contained in it that make it very difficult to carry off effectively for the first-time painter:
  • Composing your painted space
  • Rendering shapes effectively by maintaining consistent angles (i.e., perspective) for each form
  • Translating the effects of light as they pass across a three dimensional solid
  • Using value (instead of line) to delineate edges
  • Achieving a sense of space through effective use of shadow
Space Planning
Centering objects or composing objects within a painting is forever the headache whether you're a newbie or an old hat at painting (or drawing). It takes practice and know-how to make judgment calls on what to include and not include. For this exercise, the issue was centering the objects and not making them too big or too small. So, it wasn't too complicated and the issue for many of my students was laziness in not wanting to make changes or start over it once they did it once.

Perspective
In the beginning of the lesson when I did my demonstration lesson, I gave them a simple formula for rendering a solid. Namely, you begin with the bottom angle--double checking the lines of your angle using your paint brush--and then fill in the rest of the form using lines that are perpendicular and parallel to the bottom angle you started with. While this technique is not 100% foolproof it provided them with something tangible to get them started and help them achieve more naturalistic results.

Many of my students (just like student #1) made the mistake that I find many first-time painters (as well as draftsmen) make: he got the bottom angle correct but when he rendered the top of the solid he opened up the shape making it appear he could see more of the top than he actually could. All of my students could see when they got the angle incorrect but, ironically, none of them could fix it without direction.

Value
Value has got to be one of the toughest concepts to master because it's not merely about seeing (which is problem #1) but also about translating it to canvas now that you know what you're looking at.

When I first taught this lesson last semester, I had the students do a color chart and simple value scale. I didn't have this semester's students do that because of the time involved. That was a mistake. I was surprised that I had a couple of students who didn't see the differences in dark and light at all; they were completely baffled. While they somewhat get it now, I think doing a simple value scale would help.

To get my students started, I have them "sketch" on the canvas using thinned-out paint. This is hardly new or revolutionary. However, in starting this way many of my students got stuck in "coloring book mode." You know, outline it and then fill it in. I had to remind them that the real world doesn't have edges (i.e., it isn't outlined) and that outlining is merely a convention artists use to talk about changes in value, color or space. Seeing things three dimensionally is something we take for granted until we have to take the 3-D world and translate it on a 2-D surface.

Recommendations Anyone?
Overall, I think these two particular students did real well with this first exercise. In upcoming posts, you'll see how others managed the follow-up exercises using a sphere and a geometric grouping. As always, your feedback and thoughts are coveted--especially if you have recommendations for additional exercises or modifications to my approach outlined above to teach these basic painting principles.

What materials do you use?

I was originally trained with traditional oils. I moved on to alkyd oils because I liked the fact that they dried more quickly but still pro...