All Questions
166
questions
0
votes
1
answer
221
views
Can a camera be a mile long?
Could parts of a camera be spaced out over a distance rather then together to work in a way a normal camera cannot? What characteristics would this camera have over a normal camera?
In the picture ...
- 1
1
vote
1
answer
167
views
Is there an online lens diffraction and maximum sharpness table?
I simply want to see an table that lists the lens diffraction limit of each camera.
I have came across this well done answer with animated PNG
and I realized there i also the perfect sharpness ...
- 2,019
2
votes
1
answer
721
views
What should I do when my D3400 aperture is stuck no matter what lens I use?
I have a D3400 and recently I haven't been able to change the aperture on any of my lenses in manual mode. I have lenses with aperture rings and if I set the aperture to anything below the largest ...
- 21
0
votes
1
answer
72
views
Question on f-number and exposure [duplicate]
Is there any mathematical proof to show that the exposure in a camera is independent of the focal length used, if the f-number (ratio of focal length to lens diameter) remains constant?
- 177
1
vote
2
answers
718
views
Relationship between f-number and amount of light being let into the lens system [duplicate]
Why does smaller f-number imply greater aperture diameter and consequently, greater amount of light entering the lens of a camera?
As evidenced from my study across a number of resources, an absolute ...
- 177
8
votes
6
answers
2k
views
Does a lens with a bigger max. aperture focus faster than a lens with a smaller max. aperture?
The assertion by a well known photographer is that the Nikon 400mm f/2.8 set to an aperture of f/5.6 will let in 4 times the light compared to a Nikon 500mm f/5.6 lens set to f/5.6, keeping the ...
- 193
1
vote
1
answer
730
views
Clicking sound and flickering display when using Sony 70-200 F4
I recently purchased a Sony 70-200 F4 and have been testing it on my A7 (the very first one). I noticed that there's a clicking sound and the display (both in the LCD and EVF) flickers whenever I ...
- 143
4
votes
3
answers
180
views
Why is that the wider the aperture of a lens is, the more we can see through narrow cracks and crevices?
Example I took at 85mm f/1.4 on APS-C sensor:
- 41
8
votes
4
answers
3k
views
Why is Nikon 1.4g better when Nikon 1.8g is sharper?
I am new to photography (just 3 to 4 months of experience) and I am looking to buy a new lens (either 35mm or 50mm, but mostly 35mm because I have already decided Sigma 85mm f/1.4 DG HSM Art Lens for ...
- 577
0
votes
1
answer
659
views
Panasonic Lumix G 42.5mm F/1.2 vs Panasonic Lumix G 42.5mm f/1.7 ASPH Power O.I.S
How much of a difference these two lenses will make in photo quality and what will be the difference? I am a newbie in photo and I am looking to invest in a nice lens for 4/3 that has max features in ...
- 143
14
votes
2
answers
1k
views
How do apertures which seem too large to physically fit work? [duplicate]
A 400mm f4.0 lens is supposed to have a maximum aperture diameter of 10cm. Looking at such a lens they don't seem big enough to fit that kind of aperture including all the mechanics for control inside ...
- 243
0
votes
2
answers
118
views
Aperature/f stops/lenses [duplicate]
I am interested in landscape photography and a common point I hear thrown around is that a higher aperture (f11-f22) is best for landscape photos. However, every blog, YouTube video and photography ...
- 1
0
votes
2
answers
66
views
How do constant aperture zooms produce identical exposure, even though focal length is larger? [duplicate]
My understanding is that a larger focal length corresponds to a larger working aperture diameter, since the numerator is larger.
Why doesn't a larger working diameter correspond to a brighter image? ...
- 113
2
votes
4
answers
670
views
What are the technical reasons to design lenses with oddly shaped apertures?
Some lenses have oddly shaped apertures, like star or shuriken shaped. It seems to be intentional since making "normal" rounded or polygonal apertures is fairly simple (as I have observed while ...
- 27k
16
votes
3
answers
1k
views
Is it worth upgrading one stop for wildlife photography?
I have just purchased the following lens to accompany my Nikon D500:
AF-S NIKKOR 70-200mm f/4G ED VR - £1,349 (see here)
However, having purchased this lens a few hours ago, it has been pointed out ...
- 305
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