All Questions
50 questions
0
votes
2
answers
285
views
Why is my lens sharpness much softer at f/1.2 than higher apertures when taking landscape pictures?
I recently bought a used Canon 50mm f/1.2 L USM and have been noticing that the lens is quite soft at f/1.2 (using a Canon 1DX Mark II, if relevant). Now it's the first time I am shooting at such ...
- 113
0
votes
3
answers
1k
views
Taking pictures of moving objects in low light indoor settings without shake. Canon Rebel T7
I'm sort of new to photography and have been successful taking great photos during the day with good light. But anytime that I am indoors/outdoors with low light I can't seem to keep the image in my ...
- 1
0
votes
1
answer
1k
views
Canon AE-1 Aperture Lever in camera sticking
The lens I have confirmed to work on my back other A-1 but for some reason this camera body isn’t allowing the aperture diaphragm to fully close. It’s working from f1.4 to f5.6 but anything more it ...
- 1
0
votes
2
answers
328
views
Canon M50 showing aperture f22 using Sigma 18-300mm f3.5-6.3 [duplicate]
EDIT: not sure how to delete my post but I just realized the numbers represent the minimum f number, so this makes sense!
I recently purchased both a Canon M50 and Sigma 18-300m f3.6-6.3
I understood ...
- 1
0
votes
1
answer
1k
views
Aperture setting on the camera vs. the lens
I have a Canon 80D and have a question about the aperture setting on the camera vs. the lens.
I know about aperture, and my understanding is it's similar to how your eye works in letting in more or ...
- 103
2
votes
2
answers
405
views
Why does my lens aperture stop working a few hours after attaching the lens?
I recently purchased a used Sigma 105mm f2.8 DG OS Macro lens, and when I tested it during the purchase everything worked fine. A few hours later when I tried it again, I noticed that my pictures were ...
- 31
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
Why can't I see changed depth of field on LCD preview on my 2000D after changing aperture?
I have a Canon EOS 2000D camera with Canon EF 50mm f/1.8 lens that can achieve shallow depth of field. If I adjust the aperture settings of the lens on the camera, I'm not seeing any change of depth ...
- 6,855
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
1
vote
1
answer
229
views
Why am I able to set wider aperture than my lens technically allows? [duplicate]
I'm practicing with Sigma 28 - 300mm f/3.5 - 6.3 Macro lens. And the thing I've noticed is that at 300mm focal length my aperture can be set to as wide as f/5.6. And EXIF data confirms it:
I'm ...
- 407
0
votes
2
answers
1k
views
Is Sigma 150-600mm f 5-6.3 contemporary "F4-5.6" on Crop Sensor?
I bought Sigma 150-600mm f5-6.3 Contemporary DG OS HSM Lens for my Crop Sensor Canon 1300D.
What I've noticed is that it gives me max aperture of f5.6 at 600MM instead of f6.3 and f4.5 at 150mm on my ...
- 91
1
vote
2
answers
413
views
shooting in Av (Aperture Priority) Mode, but set Aperture deviates from what I set
I am shooting with a Canon 6D and an f4 24-105 L-series lens. I am pretty certain I set the aperture at f4.
After inspecting ...
- 333
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
2
answers
26k
views
Why an I getting Err 01 with my Canon camera and lens?
So I just got a Canon Rebel T4i and I'm having trouble with my lens (18-135mm STM lens). It's when I have my camera on movie mode, when I'm setting my aperture the blades won't change. I can only set ...
- 21
1
vote
2
answers
907
views
How do I adjust aperture on my Nikon F-mount lenses when I adapt them to a Canon EOS body?
So I bought a Nikon F mount to Canon EOS adapter so I can use Nikon lenses on my Canon body.
Unfortunately my Nikon lenses are stuck at their smallest aperture while on the Canon body and the camera ...
- 181
0
votes
1
answer
187
views
Canon 24-105mm aperture diaphragm screw size
I need to mount a Canon 24-105mm aperture diaphragm unit to something, but I don't have any screws for it. In the lens itself, it is attached to some sort of mount via 3 screws that screw into the ...
- 113
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
0
votes
2
answers
3k
views
Aperture, Canon Eos 1200D, Am a beginner [duplicate]
If we change aperture..does it affect on lighting conditions? Or only shutter speed affects light..?
0
votes
1
answer
610
views
Can you adjust Aperture in [Tv] mode on a PowerShot G7 X?
I do not own a PowerShot G7 X, but my friend does.
We want to know if it is possible to adjust the aperture when in [Tv] mode, so that she can try for milky water on a waterfall.
Is this possible?
- 247
1
vote
1
answer
116
views
Can't duplicate Auto results in M, Tv, and Av Canon 70D
I've been a an amateur photographer for several years. I understand the technical side and enjoy explaining it to others.
But...with my 70d, which I've owned for over a year, when I take an indoor ...
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
-2
votes
1
answer
568
views
Autofocus with canon EOS 1200d [duplicate]
Can my EOS 1200d autofocus with1.4x canon teleconverter and canon 300 mm f4 lens. What will be my maximum aperture using both of these.
- 21
4
votes
2
answers
549
views
How can I more consistently focus on the point I want?
I've had so many wonderfully composed images turn out lousy because my AF isn't as accurate as I'd like (or I don't know how to wield it). Despite using single-point AF, my focus point is often ...
- 421
2
votes
2
answers
13k
views
Why can't I change Aperture? Canon 60D
I am in manual mode (M on the top left scroll wheel above the on button) using a sigma 10-20mm F4-5.6 and then I spin the scroll wheel (which has a "set" button in the middle) below the 'q' button, ...
- 718
3
votes
2
answers
55k
views
Canon 50mm f/1.8 STM vs Canon 50mm f/1.8 II?
What are difference between canon 50 mm f/1.8 STM vs canon 50 mm f/1.8 II ?
which is better to buy?
0
votes
2
answers
389
views
what is the camera fstop and lens fstop correlation? [duplicate]
my sigma 50-500mm DG lens has range of f 4.5 - f 6.3, but in my Canon 70D camera I can still set fstop to 22 in manual mode.
1)How these two correlate?
2)Would a f22 setting in camera will have no ...
- 1
2
votes
1
answer
1k
views
What is the -5 to +5 scale below the aperture number on the back of my Canon DSLR?
Hello guys,
I am completely new on this photography world and honestly I don't have much knowledge about it, but I really want to learn... and read. I've been reading about modes, light, shutter ...
2
votes
3
answers
544
views
Apertures required to enable autofocus on Rebel T6s/T6i in Live View?
The question "What apertures are required to enable autofocus, including cross-type or high-precision focusing, on Canon DSLR cameras?" is very useful.
However, would the new Canon Hybrid CMOS AF III ...
- 21
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
3
votes
1
answer
657
views
How do I set the aperture on my Canon camera with an old Zuiko lens mounted with an adapter?
I recently bought an adapter to make the om-system mount of my Olympus Zuiko 50mm f/1.8 fit my Canon 60D. I experimented a bit shooting in Av, but still don't get how the setting given to the aperture ...
- 211
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
1
answer
2k
views
How do analog photography light meters work?
I have a Canon AE-1 film camera. It works well and I've several FD, FL and Vivitar lenses.
For recent digital cameras, I know how the light meter works. However, with this old camera, I would shed ...
- 123
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
0
votes
3
answers
178
views
Canon Film SLR 28-80 mm lens with sunfilter; what should be my aperture settings and distance
With the Canon Film SLR 28-80 mm lens with sunfilter (I think it has zero impact on focal length) what should be my aperture settings, if I have to take pictures of people in crowd and restaurant to ...
- 1
4
votes
2
answers
1k
views
What will be my aperture with a 2× teleconverter? [duplicate]
I have a Canon 60D (crop factor 1.6x) and an 85mm f1.8 prime lens. Now I want to add a 2x teleconverter and attach the 85mm lens to it.
My question is: What will the effective aperture be?
- 41
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
609
views
Why does the Canon G7 allow faster shutter speed settings only at slower apertures?
I have a Canon PowerShot G7 camera. In Manual mode it supports 1/2500s shutter speed at f/8.0, whereas at f/2.5 it supports only upto 1/1600.
But, should it not support higher shutter speed at higher ...
- 141
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
1
vote
1
answer
13k
views
Canon 24-70mm 2.8f - Optimal aperture for sharper pictures
I always have trouble getting sharper images from my 24-70 lens. I have watched numerous YouTube videos to correct this and its improved but not completely corrected. I am going on a trip and don’t ...
- 113
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.
2
votes
1
answer
101k
views
How to change Shutter Speed and Aperture on Canon T2i?
I have a Canon T2i and I am having a hard time figuring out how to change the shutter speed and aperture. I have tried reading the manual but it seems to be a little unclear. Can someone please point ...
- 31
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
3
votes
3
answers
4k
views
How can I see both aperture and shutter speed in Av mode on my Canon 550D?
I used to be able to see both aperture f-number and shutter speed, and change both values on Av mode on my Canon 550 DSLR. Now, I can only see the aperture f-number and not the shutter speed on the ...
- 31
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
49
votes
5
answers
40k
views
What apertures are required to enable autofocus, including cross-type or high-precision focusing, on Canon DSLR cameras?
This is a follow-up to Why does Canon and Nikon limit or disable autofocus beyond certain f-numbers? I'm doing this to separate the AF aperture requirements from the linked question above. My goal ...
- 5,946
18
votes
2
answers
14k
views
Why does Canon and Nikon limit or disable autofocus beyond certain f-numbers?
One thing that I've noticed with Canon DSLR camera is they will disable or limit autofocus when the lens' maximum aperture is narrower than certain values, which are specified in my answer to What ...
- 5,946
-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
1
vote
1
answer
244
views
Photography concepts using SX20
I've bought a Powershot sx20 half a year ago and I'm quite happy with it although I know it doesn't compare to a DSLR.
I've learning photography on my own: bought a 58mm ring and some filters (cpl, ...
- 393
5
votes
7
answers
2k
views
Is there any way to stop down the aperture of a Canon PowerShot SD780 IS?
I have a Canon PowerShot SD780 IS point-and-shoot which I use as my carry-around-everywhere camera when I don't want to drag my SLR about. This tiny little camera works great and takes fabulous ...
- 765
36
votes
10
answers
4k
views
What are some tips for shooting in low light?
I own a Canon 450D with just the standard kit lens that comes with it (I don't plan buying a new lens for a while) and one thing I tend to struggle with is shooting in lower light conditions, indoors ...
- 463
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