On 11-04-20 6:02 AM, AlunFoto wrote:
2011/4/20 AlunFoto<alunf...@gmail.com>:
With landscapes it's different of course... :-)
Sorry, forgot something there. I believe that when shifting the focus
of a lens, one _might_ also change the magnification, distortion, etc.
depending on the lens design. So stacking shots may be more tricky
than in the case of macro. But for landscapes you can still get a very
long way by calculating the total DOF and focus manually.
Besides, I get the impression that this guy use wide-angle lenses (a
35mm on 645D = a 18mm on APS-C). Assuming that's what he used for the
deep perspective shots I believe f/11 will give him enough DOF for any
of them.
Jostein
Here's a cake "landscape" :-) that I focus-stacked (in an attempt) to
get complete front-to-back focus ...
http://goo.gl/YBbBg
This was done from 3 shots through a DA* 50-135 @ 135 at f/8 on my
K20D. The cake was lit with an AF-540FGZ on wireless in an 18" softbox.
(I used a 2nd 540 to blow out the wall behind the cake.)
Despite being f/8, the DoF was only about 25% of the depth of the cake.
I manually focused to three planes: front, middle and rear. In
hindsight I should have done 4 or 5 shots as you can see that the
surface between the middle and rear is in soft focus.
These shots were pulled into PS as one image with 3 layers. I ran
Auto-Align Layers then Auto-Blend Layers to get the most in-focus parts
of each layer.
Auto-Align Layers takes care of the slight differences in size due to
focus breathing, etc. Luckily the DA* 50-135 doesn't seem to suffer much
from that.
-bmw
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