All Questions
14 questions
2
votes
1
answer
1k
views
Canon 50mm f/1.8 lens won't go down to f/1.8
Bought a 1.8 lens.
Today on manual I realised it won't go down to f/1.8, the lowest is f/2.8, but on other modes it does.
The camera is a Canon 5Ds.
p.s - just moved to canon so is there a setting ...
- 131
1
vote
1
answer
1k
views
How can I fix a Canon lens with sand in the aperture diaphragm?
I have a 17-85mm Canon lens which I was using at the beach the other day. A sudden hard blow of wind caused sand to be thrown on me and my camera. Afterwards, the camera would give the Error 01 code ...
- 11
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
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
1
vote
3
answers
8k
views
What is the sweet spot of the Canon's 18-55mm IS STM lens?
I'm plannning to photograph negative film like this. And I would like to know what would be the sweet spot of my lens to achieve best sharpness possible, what f stop and at what mm I should be ...
- 459
0
votes
1
answer
2k
views
Which Low light zoom lens with image stabilization for DSLR [closed]
Recently started doing some DSLR videos for a website.
For testing purposes I got a t5i with Sigma 50mm 1.4F lens. Most videos are in low-light settings.
I've been using a tripod and it's worked ...
- 103
1
vote
2
answers
3k
views
How to lock aperture using Reverse ring with Canon 600D?
Is there anyone using reverse ring and know how to lock the aperture.
I tried doing the techniques provided on youtube. First connecting the lens on original positions then lock the aperture by ...
- 113
2
votes
3
answers
2k
views
What do the specifications mean on the Canon G15's lens?
I am quite new to photography, but spent some days understanding aperture, timing, zoom and ISO.
Now I see the values printed on the Canon Powershot G15´s lenses, and I can´t interpret them.
I ...
- 195
2
votes
3
answers
3k
views
What does "maximum aperture" mean in a camera spec? Where can I get the full aperture range?
I own a Canon S95, and am considering getting a newer model (e.g. Canon S110 or S120), and I'm comparing the specs. According to DPReview.com, the S95 has a maximum aperture of F2.0-F4.9, and the S110 ...
- 635
4
votes
4
answers
623
views
Who tells my camera which apertures my lens has
When I mount one of my lenses on my camera, my camera knows which apertures the lens has. So I ask my self: Why does my camera know that for example lens XY has a max. aperture of 2.8 and a min. ...
- 993
23
votes
5
answers
4k
views
Why do two lenses with the same F-number give different amount of light?
Why do the following two lenses provide different amount of light?
In both images we have fixed focusing distance, distance to the object, ISO, shutter speed and F-number.
1
vote
1
answer
2k
views
Aperture not stopping down on Tamron lens
I have an EF-mount Tamron 70-300mm f4-5.6 lens that seems to have developed a problem. On all focal lengths from 70mm to approx. 200mm, the lens works flawlessly. When the zoom ring goes above 200mm, ...
- 2,366
6
votes
6
answers
2k
views
Is it important that the Canon 1DX isn't specified to autofocus with lenses slower than f/5.6? [closed]
Seeking the lens market AND the related info WRT Canon 1D X, I found some things which seems concerning:
1st, a note from Canon's Chuck Westerfall (see here) saying:
“AF is unavailable on the EOS-...
- 4,515
-1
votes
2
answers
1k
views
How do I decide the best aperture to use with my Canon 18-200mm lens and 50D?
I am using a Canon 50D with the 18-200mm lens it came with. Some of my pictures turn out un-sharp, even taking metering and Auto Focus points into consideration. I wonder if this is caused by my ...
- 29
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