The picture is probably made from a photograph. Perhaps the photo was not stretched vertically, or not squeezed horizontally to make the dial look like a circle.
In the left picture is the original.
In the right picture.
It was this pattern of watches that I stretched vertically and squeezed horizontally. Made the dial look more like a circle. Even in this case, the correct, normal perspective (geometry) of the picture does not work out. The watch seems to be standing on one left (for us) leg and tilted (falling) towards the viewer.
Why, in my humble opinion, such a mistake was made.
If the subject is photographed from the top point, then in the figure it will look as if we are looking at it from above. But! We look at the drawing on the asphalt not vertically from above, but almost horizontally from the side. The photograph of the clock by which this picture was drawn was not taken at the same angle from which viewers look at the clock pattern.
This figure shows why such a distortion of the perspective of the picture occurs.
In the picture to the left.
The angle and distance from the clock to the camera while taking a preliminary photo. In the photograph on which the drawing was drawn, the clock is photographed almost vertically from above, from a short distance. About the small distance between the clock and the camera, says a big difference in the sizes of the numbers 12 and 6. In the picture to the right.
The angle and distance from the picture to the camera while shooting the picture. In the drawing, viewers look and take pictures, almost from a horizontal direction, but see the clock as if they were looking at the clock from above. Therefore, there are similar distortions of the perspective (geometry) of the 3D drawing.
In the left picture.
Original watch stretched to a round dial.
In the right picture.
Something like this might look like a clock, if first, correctly build the perspective of the clock. Another thing is that it would be problematic to draw such a height, such a size clock. Because the drawing would turn out almost to the horizon. Perhaps this is why the picture was squeezed vertically?
Criticism is only fruitful then
when she, in condemnation, indicates that
what should be that which is bad.
Following the advice of Leo Tolstoy, I criticize fruitfully, I point out what should be that which is bad.
How to avoid a similar mistake in drawing perspectives.
The first way.
Pre-build the projection of the clock. On this correct projection, apply details, colors, shadows, highlights, reflections from those watches whose photographs were liked by the customer or the artist himself.
The second way to avoid this error.
Take a picture of the watch yourself at the right angle and from the right distance.
How to draw such a clock correctly will be very clear and clearly shown in this course. Or in one of the lessons on my Patreon page.
https://www.patreon.com/ArtistFarit
A chapter in a book or exercise on Patreon will be called “A Cylinder Lying Horizontally.”
The second example
Pool, and a man sitting on a raft. The picture is clearly drawn from the photograph. The photograph of the pool was not taken at the same angle from which we look at the drawing of this pool. Therefore, I “see” that the surface of the sides of the pool and the surface of the water in the pool are not parallel to the surface on which the drawing is drawn. The pool in the picture is located, under a strong slope from us. Unless of course, this pool has a rectangular shape. If the pool is drawn in the form of a trapezoid, then it is drawn correctly. I have never seen pools in the form of a trapezoid, but this does not mean that such pools do not exist. Exceptions, as you know, confirm the rule. I decided that a rectangular pool was drawn, but with errors in perspective. For me, this is another example where you can show why you get such errors in drawing the perspective of a 3D drawing.
This pattern is drawn on rectangular tiles. Due to the presence of seams between the plates, we can find the horizon of the site on which this picture is drawn. We continue the seams of rectangular plates until they intersect with each other. So we find the horizon of the platform on which the pool is drawn.
In the left picture.
The original drawing with the painted horizon of the site.
In the right picture.
Search for the horizon of the original pool photo. From the lines of the side edges of the pool we can find the horizon of the original photograph of this pool. The horizon in the photograph with which the pool was drawn is located at the intersection of the sides of the pool. We continue the line of side sides of the pool. The continuation of the sides intersects on the horizon. The horizon of the original photograph in which this drawing was drawn is at the height of the shoulders of the seated person.
It can be seen that the horizon of the site and the horizon of the drawn pool do very much not coincide. Therefore, similar errors are obtained in the perspective of the drawing.
In the left picture.
Conditions for shooting the photograph with which they drew the pool. The photograph of the pool (according to which this picture is drawn) was taken from a lower height. A photograph of the pool was taken from the height of the shoulders of a seated person.
In the right picture.
Conditions for shooting the picture. We look at the figure from the height of human growth (a standing person). Therefore, it seems that the pool is not parallel to the surface on which it is painted. But even if you sit down and look at the picture from a small height, this error can no longer be corrected.
In the left picture.
Original drawing with non-coincident horizons of the site and drawing.
In the right picture.
An example of what this pool should look like if you draw it in compliance with the laws of perspective (geometry). The continuation of the side sides of the pool intersect on the horizon line of the site. Correcting the geometry of objects is relatively simple. It is especially simple to correct (and draw) the perspective (geometry) of rectangular objects. Unfortunately, the “geometry” of a seated person is more difficult to fix. The person (just redrawn from the photo), in the right figure, turned out to be tilted back. Since the horizon of the photograph of a person remained in the same place, at the height of his shoulders. To correct the perspective of the “geometry” of a person, you need to photograph a person from the right distance, at the right angle, from the right height.
In the