All Questions
166
questions
0
votes
3
answers
916
views
How do I properly compare this full frame lens to cropped frame lenses?
I am looking for a 35mm e-mount lens to put on an APS-C camera. The obvious choices are the 35mm Sony F1.8 with OSS, and the Zeiss Touit 32mm F1.8, but as I've been looking at those options I see a ...
4
votes
2
answers
7k
views
Is the diaphragm on my FD 50mm 1.8 stuck?
I've recently purchased a Canon AE-1 Program and a FD 50mm f1.8, as a entry way into the world of photography. As soon as i got the lenses, i got excited to check it out. I noticed something weird ...
- 143
2
votes
3
answers
475
views
What's the intended use of lens with f-numbers close to or "faster" than f/1?
Lens with f/1.2 are rather expensive and not very widespread. Lens with f/0.95, f/0.85, f/0.8 do exist but they are also very expensive and quite rare. Lens with f/0.7 are so rare that some of them ...
- 1,059
0
votes
3
answers
1k
views
Dark photos at apertures of f6 or f8
I am trying to test for a photoshoot of a model on white background and most of my images are coming out very dark unless I increase my aperture to the maximum.
I am using a fixed 50mm lens, shutter ...
- 647
-4
votes
1
answer
113
views
Example of desired look: how do I duplicate it? [closed]
A few questions:
In the attached picture if you zoom in, there is a very slight blur on this mans freckles. It is still in focus, but it almost looks as if the picture was painted. How was that ...
- 3
2
votes
4
answers
24k
views
What does 1:4-5.6 mean on a lens?
what does 1:4-5.6 means on the lens. Does it means that the focal length is from f4 to f5.6 only? Or does it means that it has a range from f1 to f5.6?
- 21
0
votes
2
answers
246
views
No more F/1.2 primes?
A question from my dad:
“Back in my day, all the cool kids used f/1.2 primes. Is there a reason why they don't make those any more?”
If I had to guess, I'd take a stab that digital sensors don't ...
- 2,817
0
votes
3
answers
2k
views
Canon 70-200 f/4 L still sharp at wide open?
It recently came to my attention that lenses rarely perform at it's best when wide open. Is this the case with the Canon 70-200 f/4 L? Will I lose IQ by shooting at f/4 or should I shoot at 7.1 to be ...
- 812
4
votes
3
answers
3k
views
Which formula for f-numbers is correct: f/D or 1/(2NA)?
I've seen two different definitions for the f-number of a general-purpose lens. Are they consistent ?
I'm assuming that subjects are distant (not macro, magnification is small), and we have a lens ...
- 41
7
votes
3
answers
978
views
Does the maximum aperture vary linearly with focal length?
Many lenses list a range of maximum apertures. For example, the Nikon kit lens has a maximum aperture of f/3.5 at 18mm, but at 55mm it's only f/5.6. Does that mean that at half-way between 18mm and ...
- 2,817
0
votes
1
answer
346
views
Nikon F - Lens with Built-in Autofocus Motor and Manual Aperture Ring
My question is as follows, is there such thing as a nikon-f mount lens that has a built in autofocus motor and a manual aperture ring? Or do the two contradict each other? The camera model is Nikon ...
- 139
3
votes
1
answer
6k
views
Can I control the aperture of a F-mount lens with aperture ring from the camera body?
If I buy a lens with a manual aperture ring like the Nikon AF 50mm f/1.8D, then does that mean that I can only control the aperture on the lens? Or can the camera control it too? I want one with ...
- 139
1
vote
2
answers
644
views
How can I cancel aperture resetting between subsequent image shots of a timelapse?
When shooting timelapses, small deviations of aperture position between shots can cause an image to flicker. The most obvious way is buy a lens that doesn't reset aperture on every shot you take. What ...
- 237
2
votes
1
answer
981
views
How does a manual lens know when to adjust the aperture?
When I look through a viewfinder before I take the photo, the lens is "wide open" - at its largest possible aperture (unless the depth of field preview is used). The aperture is adjusted to whatever I ...
- 125
2
votes
3
answers
357
views
From a user perspective, is a stopped down variable aperture zoom lens equivalent to a constant aperture zoom lens?
Let's say that I have a 24-70 F3.5-4.8 variable aperture zoom lens. If I were to stop down that lens to 4.8, would it then be equivalent to a 24-70 F4.8 constant aperture zoom lens from a user ...
- 131
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