Originally posted by yperion After a little more search I found that the tilt/sift lens, suppose to be what I’m looking for, for best results regarding the more in focus and sharpens Depth of Field.
So the Shift faction fixes the perspective
Original normal picture(no shifting)
Shifted picture
And the Tilt faction altered the depth of field, either to reduce or to extend the depth of field
Extended DOF, f/4, image plane tilted so that we get more DOF
Shallow DOF, same aperture as before, just tilted to the other direction.
This gives you and effect of a really large aperture.
So if at f/4, this kind of lens, can produce these DOF, I suppose that in smaller aperture could, sharpens and resolution, be excellent.
Can we add something more?
A lens with about an 8 degree tilt would allow you to focus on an entire 18" wide plane viewed at about 30 degrees ( 60 degrees with respect to vertical). The Depth of Field should be sufficient at reasonable f-number to include an entire shoe as in the original post in this thread.
The above is within the range of the Hartblei tilt adapters available on ebay and elsewhere for about $130USD. I have such an adapter and it works well. The Hartblei adapters use Pentacon Six lenses which are also available on ebay. I use a pretty good 65:3.5 MIR 38 which cost me about $65USD I think.
The relation between magnification, m, Plane of Focus Tilt (with respect to plane perpendicular), and Lens Tilt is:
Tan(Plane of Focus Tilt) = (1+1/m)Tan(Lens Tilt)
For example, if Lens_Tilt = 8 degrees, and Plane_of_Focus Tilt = 60 degrees, then m = sensor_width/scene_width = 1/11.3, which for a 1" wide sensor corresponds to a scene width of 11.3".
For large magnifications like in Macro photography, large tilt angles are required, hence a tilt bellows might be used.
Dave