3D???

[Blueman]

I'm always confused about this 3D stuff...what is 3D in itself? I know it is 3rd dimension whereby u see d 3 sides, buh what I've seen @ Husky8690's post about d way a woman did a 3D pix is getting me really confused!I need help on dis, pls...and how can it be done?I've PS4 (CS4) on ma system!

 

[sprucemagoo1]

When talking about the third dimension in an image, it is referring to the depth, as 2d is height and width. There is obviously no way of giving depth to the image literally, unless it's a hologram, so we have to use tricks to give the perception of depth.

All of today's technology relies on a sort of animation to fool the eyes, showing one image to the left eye, followed with the image for the right. Whether it is done with glasses that alternate the lens you can view out of in time to left and right images on the screen, or the screen directing the image to one eye, then the other eye very fast like on a gameboy 3d, you will always need technology of some sort to view the image in 3d. you will have to choose how you want to view it.

In the real world, when looking at things in the background, our eyes focus on the bit in the background. Unfortunately all of today's 3d tech causes our eyes to focus on the screen, even when trying to look at the background, meaning you are almost guaranteed to strain your eyes by watching it for too long. (THEY are saying about 4 hours a day will be too long)

I can't watch any of them anyway, because I can only see out of one eye, everything looks 2d to me anyway. Don't worry about me though, just when THEY think everyone is watching 3d tv, THEY will bring out holographic TV's, which are not as far off from being put on shelves as you would think.

 

[Tom Mann]

For a different POV, let's go back to the basics of art. Here are a couple of short articles to read on the subject of representing the real three dimensional world in two dimensions.

http://char.txa.cornell.edu/language/element/form/formillu.htm

http://www.studiocodex.com/space01.html

As you might imagine, there has been A LOT written on this subject since people first started writing about art technique.

Tom

 

[Blueman]

Many fanks to Spruce and Tom, buh am still nat cleared. I actually gat da part about da 3D matters...buh how can it (3D) be done on Photoshop? Or should I ask, can it b done on Photoshop?

 

[Tom Mann]

Photoshop can introduce or enhance as much or more of a sense of three dimensionality as was ever done using conventional painting or photography techniques. However, that there is no magic button marked "3D" that you can push to get these effects or enhance existing visual suggestions of 3D.

Think of PS in the same way as a painter would have thought of a set of camel hair brushes and paints in the old days, or a photographer would have thought of his lenses and lights in more recent times. All are just tools that must be commanded by someone who understands the basics of the effects. That's why I directed you to a couple of conventional web pages that deal with 3D in the context of conventional painting.

Exactly analogous discussions exist to try to enhance the appearance of three dimensionality in photography. For example, lighting, depth of field, choice of focal length (to enhance perspective distortion) and other photographic techniques can help separate a person from their background. You can fake some of these effects after the fact in PS, but you then are doing things like painting in shadows and highlights in almost in the same way you do it if you were painting from scratch.

Sorry, but if you want to generate artistic effects yourself, you need to learn some of the basics. In some ways, it was never easier. For example, if you Google {three dimensional painting techniques} you come up with over three million hits, most of which are helpful. Read some of them, give them a try on your own photographs or PS graphic art, and then come back with specific questions that we can help you with, or ask for critiques.

T

PS - From the typos, choice of words and the short length of your responses, it looks like you are trying to type on a tiny cell phone while driving over a bumpy road, LOL. Suffice it to say that this doesn't make communication easy. Sometimes you need to use more words and have them put together well in order to communicate exactly what you want.