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1
vote
4answers
203 views
Does an aperture value exist, where a lens creates a brighter image than the real view?
So (without limitations of the viewfinder for example) looking through the viewfinder
creates a brighter image than normal view would be.
The lens would then work like a funnel(collects light from ...
0
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0answers
32 views
Solid explanation behind the physics of the relation between aperture size and depth of field [duplicate]
Possible Duplicate:
Technically, why is the out of focus area blurred more when using a bigger aperture?
Many of us know that there is a relationship between the aperture size (f-stop) and ...
10
votes
3answers
415 views
Focussing on a mirror image
When I take photographs of a subject reflected by a surface (water, mirror, glass) I notice that the focussing distance is not the distance from my camera to the surface, but mostly it is close to ...
0
votes
0answers
86 views
Technically what happens that aperture affects Depth of field [duplicate]
Possible Duplicates:
What exactly determines depth of field?
Technically, why is the out of focus area blurred more when using a bigger aperture?
It is obvious that the aperture affects ...
3
votes
2answers
312 views
Assuming a perfect sensor, what is the physical limit of ISO/pixel area?
Assuming that camera manufacturers can eventually make the perfect sensor that introduces no electrical noise to the signal, at what point (measured in ISO/area of a pixel) will shot noise be so ...
