1. @Shoebill Thanks! Hard work pays off!
@Ajams Thanks! Yeah you're right about the holograms. I didn't want to compete with the center focal so I intentionally left them washed out a bit. As for the thing on the left it's just some box like thing to balance the left side.

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How angle of light can change the outer edge of the cast shadow.

Tilting objects by using a vertical reference line.

How ellipses change in relation to the horizon line.

How to tilt objects. Vps must be maintained so that proportions can be maintained.

Here I learned that cylinders in 1 p or 2 p don't make a different in construction and that the degree and angle can still be accurate.

Placing different triangles in perspective. How to know whether they're scalene, isosceles or equilateral triangles.

How to cast a shadow for ramps. Notice the chamfers.

4. Dayum that factory looks awesome Interesting piece. You're doing great, keep it up man!

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Damn, those perspective studies are hot! So much stuff that I can't use to improve my drawings (Im not that good at perspective but I'm trying).
There's not a lot to say about your mech/hard surface drawings, they made me speechless! So many cool stuff! Also lots of things for me to learn/get inspired.
You need to work on those gestures. I started drawing them with the structure and the action lines, I think You would benefit a lot from some Proko videos (just type Proko figure drawing on YouTube).
Thanks for the awesome references and keep them coming!

6. @ caiowcxs Thanks! Not sure if you have already but go a head and make a SB! I'll drop by to offer some critique! Let me know if you have any questions!

@ Minella Thanks!

7. Hey guys! Been heavily studying perspective. The more I learn the more I realized how little I know.

Combining 1 pt and 2 pt perspective in one and how line of sight changes objects in picture plane.

Proving that even tilted verticals don't converge in 2 pt perspective with line of sight still parallel to ground plane.

Using ellipses to tilt the same box and still maintain the same proportions but in perspective.

Plotting a curve in perspective using multiplying and intersections.

Learning how to tilt on the x axis as opposed to the Y axis. Then using ellipses to best guess the verticals.

How ellipses help maintain proportions when tilting a box in perspective.

Casting shadows on tilted boxes and how the gap from the ground affects the shadow.

Same thing but with bigger gap and the tilt is on the x axis.

Casting shadows for tilted triangles and how the gap affects the shadow.

8. It's good that you have a deep understanding of those objects you want to drew.
I read Scott Robertson's How to drew to learn perspective. It's a very mechanical book, but it answered many questions.

9. @Yuran Thanks man! Perspective seems like a topic that many people avoid but I'm going to tackle it head on

These studies are hard but I'm learning quite a lot from them. Will put them into practice soon with a focus on design instead.

Intro to 3 point perspective.

Determining the diagonal vanishing point for greater accuracy in drawing boxes.

Determining the cast shadows from local light.

Same thing but on x axis. This was very hard to figure out.

Finally figured out how to place shadow in local light on a tilted box that's tilted on the y axis.

How to properly offset wheels and divide tread properly. These will be a precursor to my next piece.

Last year I went through countless pages simply drawing the same circle over and over and over. I found that helped a bit with muscle memory. If you haven't tried that then I think it would be worth a go.

11. Thanks Shoebill! Will definitely try some more ellipses freehand for practice. I already did some as of now. More studies!

Anatomy studies.

Some ellipse freehand practice.

Using the ellipse to find tangents for a rotated box.

Rotating a box on top that has the same dimensions as the one below while in perspective.

Turning the horizon 180 to build a sense of vertigo.

12. More studies! Really feel like I'm improving a lot here. Applying tilt in 3 point perspective.

How every face of a cube has a minor axis that the ellipse must adhere to.

Freehand xyz forms.

How to cast shadows on the ground plane and object itself. The shadows must match the form of the object that is cast upon.

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Nice dedication, I can't imagine that drawing boxes and ellipses is all that fun. But I guess it really help out in the long run, I can't say anything in the factory looked off perspective wise. I think with the figure drawing the figure on the left of #130 looks to be an improvement. The guy on the right, I would say that his neck looks like he's been pumping a few too many roids, it's not bad, it's just a proportional thing to consider.

14. Looks like you are on a good way! I think you can already go a step further and try even more complex shapes (like the freehand xyz-shape) or concentrate a bit more on line weight now. Could be great to see you applying the helpful advice you gave me on your own work as well.^^ And I totally dig the enthusiasm you have on your perspective studies!

15. Great sketchbook!

Youre very good at drawing mechanical things, which I greatly appreciate, as that is definitely something that I need to work on.

Looks like youve come pretty far. Really liking the perspectives on the shapes. Figure studies still need more work, but theyre looks better as well.
Try drawing more freely with them. Dont think about details or anything, just get down the overall form of the figure.

Keep it up!

16. @Zeno Thank you! Yeah my anatomy sucks. I do tend to foucs on smaller useless details since I come from a technical background. Let me know how your technical studies come a long!
@ Gregor Thanks! Glad to see that my advice has helped you out! I'll definitely start applying the theory real soon.
@Ajams Thanks for the heads up! You're right about the neck being thick. Will pay better attention to my proportions.

17. Alright more studies! These are really liberating since they're debunking how perspective works. Here I learned how to locate the new vp for an object that's diagonal or turned 45 to the original object.

Here I learned an awesome little trick for locating new vps by using existing receding lines as the benchmarks for a grid.

Here I learned how to rotate an object in 1 point perspective while maintaining the same proportions in perspective.

How 3 point perspective changes the appearance of cast shadows.

Using that vp locating trick again but for all axis, both vertically and horizontally.

18. Hardcore work on the studies crankshaft! I'm curious to look at your imagination work after this .

19. Thanks Fantasyartist! I'm super excited to apply my theory now. I have some rough sketches of a new design but they're super messy and not really presentable.
Some old stuff I forgot to upload:

20. ## The Following User Says Thank You to crankshaft For This Useful Post:

21. Doing cast shadows for curved objects in direct light and local light.

How cast shadows differ for different wing tips.

How to know when you have an oval or ellipse in perspective.

How to get true ellipses in perspective and not ovals.

How to mirror different wing tips and other methods of getting the same result.

22. Not many updates for now since I'm focusing on design and applying my theory/studies to my next image.

Here I learned dvps always indicate perfect squares for that plane/axis.

If you have a dvp that's not 45 degrees from the station point then it becomes a rectangle and not a true square in perspective.

23. Interesting studies Crankshaft. What source are you studying all these from?

24. @Fantasyartist Thanks! The earlier studies were from Successful Drawing by Loomis and Scott Robertson's How to Draw. These ones are a result of my curiosity and some trial and error. They also build upon what I've learned from the two books that were not really covered in detail. Some sources include random sites off the internet eg studying ellipses. As of now I have an entire agenda filled with goals that I want to do studies on. Thanks for the compliment!

25. Some design draw through with ellipses and boxes. Also how to know what the degree of an ellipse is in relation to the viewer.

How to convert 2 point perspective to 3 point and how to fix distortion by locating the center of vision.

26. Wow you have been working hard! That are a looot of studies, really good! You are going to be a master of constructing shadows very soon if youre not already

27. Hey Dennis! Thanks a ton! Yeah these studies are hard but really fun and gratifying. I really like I'm giving myself a school approach to learning how to draw.

More studies for my next piece! Top view study on cylinders/radii and how their circumferences affect adjoining edges. Also, understanding how to draw thru with overlapping/ hidden contact points as a result of the radii.

Same study but in 3d/perspective. With vertical cylinders they stay pretty much oval regardless of the surroundings.

Putting the study into practice while trying out some pens/line weight.

28. Your on track to becoming a perspective guru

I admire the effort and determination you're showing in this area and it's highlighted the fact that I need to do the same as it's such a deep and complicated subject.

Keep it up buddy!

29. Keep up the great work! It's going to be so much fun once you start applying this perspective knowledge to drawings.

30. @ Shoebill Thanks man! I'm doing some freeform sketches in pen and I'm already seeing gains with all that studying!
@ Mothman Yea perspective is hard stuff but it's much easier if you take things one at a time. Let me know if you need any help!

Ok more studies! Will post some quick sketches with a focus on design/imaginative work soon. I just find they turn out very messy and unrepresentable which is why I'm holding back.

Understanding different degrees of ellipses in relation to the true circle. This also helps with eyeballing ellipses better when free hand sketching, especially if you know where the viewer is standing.

Using receding lines to lay in coordinates for plotting ellipses. This is useful for doing tighter accurate drawings as well as quick sketching because it gives you more limits/guidelines how the ellipses should be drawn.

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Looking at post #145, are you going to be doing another big project like the factory? Because that would be cool. Also looking at these studies, I'm really interested in seeing how you would apply them outside of a controlled environment. So, on an object like a dog or something with multiple light sources.
Last edited by AJams; April 19th, 2015 at 09:19 AM.

32. I'll make sure to ask for your help once I get into perspective.

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