gdanmitchell
Online
• • • • • • •
Upload & Sell: Off
|
 p.11 #20 · 3-D "effect" from non pro bodies? | |
Wimg...
If it takes 12 paragraphs in the forum it probably isn't "simple," and it is at least 13 cents worth... ;-)
I do think it could be, uh, simpler?
What some people like to refer to as "3D effect" is some subjective sense of depth in the photograph that suggests to them that objects that are not in the same plane or a narrow range of distances. Objective things that contribute to this subjective impression include DOF choices, focal length choices, composition choices, elements of composition and form, color and texture juxtapositions, differences in luminosity of several types, and perhaps more.
I am convinced that which body you use within any given format has little or nothing to do with the effect. I also think that what lens you use has little if any significant effect on this.
Dan
wimg wrote:
I think it is simple.
An image has a 3D effect if it fools the viewer into thinking it is 3D. The worrying thing about this is that this is different from person to person. What one sees as 3D, may not be so for another.
Also, although lens and camera may help. IMO composition, framing, contrast, DoF zone or DoF plane and especially PP may be more important in helping causing this 3D effect than anything else.
Zeiss lenses are supposed to give a 3D effect, mainly because of 3 reasons. The first one is a very well defined DoF plane. The sharpness falls away very, very rapidly in front of the DoF plane and behind the DoF plane. The second one is the rendition of the transition from sharp to unsharp, the bokeh associated with it, which is despite the speed at which the transition occurs, very smooth. The third one is the microcontrast, the details that these lenses provide. However, I think only some of the Zeiss lenses are really capable of this, and IMO the one that does this most clearly is the Zeiss Macro 100 F/2.
All this is is independent of camera body, although the resolution needs to be at a minimum in order not to look "digital", as the rendering of a sensor is rather different than film. IME, the minimum requirement is about 6 MP for APS-C, and about 8 MP for FF, but it really gets nice from about 12-13 MP on APS-C and 17-18 MP on FF, where the curve of sharpness over the DoF plane starts looking like a film curve, rather than the stepped approach you see with digital at lower MPs. Note that the abovementioned MPs coincide with MTF charts looking like old MTF charts created for film again; no longer almost straight lines from left to right for all apertures both in the corner and centre of the lens (essentially limited and cut-off by the AA-filter), but curved lines, peaking at some sweet spot.
As it is possible to create a drawing that fools humans entirely when it comes to the 3D efffect, a logical conclusion would be that it is entirely possible to create a 3D effect with any camera and any lens, with the right photographic and PP skills.
The question remains now when a photograph has a 3D effect, or what characteristics are required to fool the human brain into believing that it is 3D rather than the 2D representation it really is.
I think that some of the characteristics required are such compositional effects as lines leading the viewer into a picture, and a perspective and lighting to match, with an indication of depth. To me this often happens when it looks like part of the picture literally seems to jump out, outside, above or in front of the actual plane of the picture.
Does this help? 
BTW, contrary to some beliefs posted in this thread, TS-E lenses actually do help in creating this effect too, basically because one can create a line or plane of sharpness that leads the viewer into the picture, and hence may create a sense of depth.
Finally, I also find that the size of a picture is important to, as is viewing distance. Too small, and a picture may become too sharp from foreground to background to still have the effect, and too large and it may become too fuzzy. It needs to be just right for optimum effect, and viewed from th eright disstance, for the same reasons.
Just my 2c  .
Kind regards, Wim...Show more →
|
