9
votes
Can I use aperture priority mode with a constant aperture lens?
Yes.
Constant Aperture is a reference to a zoom lens' maximum aperture at all focal lengths.
It does not mean that it is the lens' only available aperture setting. That would be a fixed aperture ...
- 173k
7
votes
Accepted
Why did the shutter speed increase when I raised ISO and lowered exposure compensation in Aperture Priority mode?
Both of your changes were in the same direction with regard to shutter speed, not in offsetting directions.
Keep in mind that exposure values (EV) with higher numbers are for brighter lighting ...
- 173k
7
votes
Can different ISO settings be preserved when switching between different Exposure Modes on Canon DSLRs?
No. This sort of feature is available on higher level Canon cameras where you can have one or more sets of "custom settings", but not on an entry level camera like the 1300D.
- 20.9k
6
votes
Accepted
How can i shoot in aperture priority with auto ISO?
In A,S,P,M modes, you have to turn Auto ISO on, in Setup menu, see manual. Auto ISO is automatically ON in Auto mode, but is not automatically ON in A,S,P,M modes, not unless you turn it On.
User ...
- 12.8k
5
votes
Why is actual exposure changing as I go from one extreme to the other in aperture priority mode?
In each of the 4 photos, the amount of sky and foreground has changed.
The sky is very bright and everything else is much darker. This makes for a very challenging exposure for any camera. The ...
- 11.9k
5
votes
Can I use aperture priority mode with a constant aperture lens?
There are two misunderstandings in your question.
As covered already by Michael and flolilolilo, "constant aperture" means that the widest available aperture (smallest f-number) is constant across ...
- 1,340
5
votes
Why did the shutter speed increase when I raised ISO and lowered exposure compensation in Aperture Priority mode?
Originally you asked the camera to overexpose by one stop. When you set exposure compensation back to 0, the exposure time was halved. When you increased the ISO sensitivity by a factor of two, the ...
- 844
5
votes
Can I use aperture priority mode with a constant aperture lens?
Yes.
Usually, the f/2.8 notation just tells you the maximum aperture (greatest diameter), but it does not say anything about the smallest aperture (smallest diameter).
E.g. a 70-200 mm f/2.8 can ...
- 6,467
4
votes
How can I lock the aperture setting on a 5DMkIII with long exposures in Av mode?
In your situation I would be using manual mode.
If you really want to use Av mode, then you must disable "Safety Shift". You can disable it in the custom function menu. It is at the bottom of the C....
- 11.9k
4
votes
How do I control exposure in aperture priority mode?
Aperture Priority is an Automatic mode. In all Auto Modes the camera will automatically set what it thinks is the correct exposure. Changing the Aperture, Shutter or ISO or will not change the ...
- 11.9k
4
votes
Accepted
When shooting in A-mode, at times the shutter speed becomes too slow to hand hold and shoot. How do I solve this?
The main way you balance out light against your needs for the image is the "exposure triangle" of the three main settings: ISO, aperture, and shutter speed. You have to choose your priorities: noise (...
- 50.7k
3
votes
Accepted
Nikon D7000 thinks aperture of non-cpu lens is always 16 and overexposes photos
Have you checked the mechanical linkage on the body that reads the aperture setting from objective to see if it is stuck? If it is not stuck try moving it by hand and see if the aperture reading ...
- 4,159
3
votes
Accepted
Why is actual exposure changing as I go from one extreme to the other in aperture priority mode?
The second and subsequent pictures should be darker. You increased the aperture size by 1 1/3 stops from f/22 to f/14 but reduced the shutter speed by 1 2/3 stops from 1/60 to 1/200. So the second ...
- 173k
3
votes
Does exposure compensation affect shutter speed in aperture value mode?
Yes, this is generally the case. If you fix a value like aperture (which is what you are doing when you set the camera to Av mode), one of the other exposure factors must change — and the only other ...
- 142k
3
votes
Accepted
How do I control exposure in aperture priority mode?
Short answer: Assuming you're shooting in aperture priority mode, fiddling with the shutter speed or ISO actually won't change much.
The exposure is automatically calculated by the camera for you and ...
- 181
3
votes
Can different ISO settings be preserved when switching between different Exposure Modes on Canon DSLRs?
Is there any way to make ISO settings independent based on exposure mode selected, meaning we could set ISO 200 for M mode and ISO 400 in Av mode and when the dial is switched from M to Av, the ISO ...
- 173k
2
votes
Accepted
What is different between "M" and "A" with exposure compensation modes?
If the shutter speed, aperture, ISO and other camera settings are all the same, photos should be identical. What M mode does give you is the ability to go beyond the max exposure compensation that Av ...
- 2,366
2
votes
How to determine the exposure mode used in two photos if they have the same ISO value and the same exposure value?
In addition to shutter or aperture priority with fixed ISO, options include:
full auto or program mode
a program-shift mode, if the camera has one (from this camera's manual, it does not, but other ...
- 142k
2
votes
shooting in Av (Aperture Priority) Mode, but set Aperture deviates from what I set
I believe the answer to the question is that I needed to change the flash from first curtain sync to high-speed sync.
I thought I changed that setting before I started shooting, so that would limit ...
- 333
2
votes
The best setting for Canon 70D for my application
scottbb has more than adequately covered the pure photography side of things, so I'd like to add another aspect.
Bouncing a camera repeatedly over a bumpy field on a hard mount & expecting it to ...
- 22.1k
2
votes
Accepted
The best setting for Canon 70D for my application
While the actual questions you asked aren't very broad in scope ("should I use Av/Tv/Manual mode?", and "Is the 18-55 STM lens useful for my application?"), I think the details of ...
- 31.7k
2
votes
How can I produce high quality images of field ranges for training sets?
If I understand correctly, it sounds like what you want is a Tilt/Shift Lens.
This will allow you to adjust the focal plane to be more in line with your shot.
Some quick examples from the web:
Marc ...
- 2,201
1
vote
Why did the shutter speed increase when I raised ISO and lowered exposure compensation in Aperture Priority mode?
In addition to the (correct) other answers, you need to understand that the camera measures the incoming light in specific spots. Unless you use a tripod and keep everything exactly aligned, each shot ...
- 2,021
1
vote
What is different between "M" and "A" with exposure compensation modes?
Auto with exposure compensation (at a fixed ISO) can give you the same lighting levels as manual, unless you want a very under- or over-exposed image (according to the meter in the camera).
What it'...
- 3,762
1
vote
Is wide aperture required when shooting faraway objects in low light conditions?
You're correct in saying that you can pick any trade-off of shutter speed and aperture size that you want, so long as you obtain the same exposure (or as you say, number of photons hitting the sensor)....
- 560
1
vote
Is wide aperture required when shooting faraway objects in low light conditions?
As you hinted, the number of photons per pixel per exposure depends linearly on exposure time and also linearly on lens area, which goes as the square of the F-stop.
How you optimize depends on ...
- 1,887
1
vote
Using a remote in Av mode using a Canon EOS T4i
You can use an infrared remote, such as the RC-6 or its generic clones, with either Aperture Priority, Manual, or any other exposure mode with your EOS Rebel T4i/650D.
The key considerations are to ...
- 173k
1
vote
Is the AF Nikkor 35mm f/2D lens compatible with my Nikon D5200?
See this link for an answer to almost every lens compatibility question: http://www.kenrockwell.com/nikon/compatibility-lens.htm#dslr
So YES, your lens will automatically adjust exposure in PSAM ...
- 111
1
vote
Does Av mode apply any in-camera software push-pull (Canon 6D)?
Most cameras don't set much of anything steplessly. They will meter in very precise graduations but when converting that metering to exposure settings it is going to be rounded to the nearest ...
- 173k
1
vote
Why is actual exposure changing as I go from one extreme to the other in aperture priority mode?
Exposure value, EV, is log2(Fnumber^2/Time_in_secs). That is, if the aperture is set to f/2, the Fnumber is 2; and suppose time is set to 8 secs, log2(2^2/8) = -1 EV. Closing the aperture by 1 stop, ...
- 2,031
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