Questions tagged [aperture]
Aperture is the opening in the diaphragm of a camera lens. For questions relating to Apple's photo management software, please use [apple-aperture] instead.
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Does the T-number account for lens vignetting, or only for glass/coating transmission?
Surprsingly I could not find information on this. Many lenses have vignetting profiles available. Vignetting changes if you use a cropped sensor, or, in case of zoom lenses, can change with zoom.
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How can aperture be f/11 on a lens with an aperture range designation of 3.5-5.6?
I made a series of outdoor shots with Nikon D5000, with the 18-55mm 1:3.5-5.6G VR kit lens.
On some shots, I see in the EXIF info f/11, and in another shot, f/9.
How can that be, that the f-number ...
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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 ...
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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 ...
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Can the aperture be changed when using a tilt adapter without electronic interface?
I ordered a tilt adapter from EF (Canon EOS) to NEX (Sony e-mount).
The adapter doesn't have an electronic interface is there any way to manipulate the aperture?
All other adapters I use have ...
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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? ...
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Are bokeh (ball) shapes a result of vignette or aperture action?
The effect of getting shaped out-of-focus highlights (bokeh balls) from both non-circular apertures inside the lens, and masks applied in front of it (where an external aperture would presumably also ...
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How will a teleconverter affect the sharpness of a lens at a given aperture?
If I have a 200mm f2.8 lens and apply a 2x teleconverter the effective focal length and aperture becomes 400mm and f5.6. However, I am unsure about the effect this has on other aspects, such as image ...
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Is the low-light advantage of larger sensors attributable to the sensor itself or to the larger aperture of the lenses? [closed]
Let's say I take a photo using an APS-C camera and using an FF camera, from the same position, with the same ISO and shutter speed.
Let's say I use a 50mm focal length for the FF camera. To match the ...
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What is the technical name for a zoom lens which has a fixed maximum aperture?
What is the technical name for a lens which has the same maximum aperture throughout the entire zoom range?
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Why don't all zoom lenses have variable f-numbers? [duplicate]
As I understand it, the f-number is a ratio between the focal length and the aperture diameter. A zoom lens can change focal length, but shouldn't the maximum aperture be a fixed size? If so, that ...
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What is the benefit of a wide-aperture lens if you stop it down?
As an example, say you have two lenses:
300mm f/2.8 being used at f/8
300mm f/4 being used at f/8
My understanding is that by definition the amount of light coming through the aperture means that ...
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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 ...
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Why is the Depth of Field Preview button necessary?
I've looked far and wide but i cannot find the answer for this question.
I know some older cameras and lenses used to have aperture rings on them, which allowed the user to set how open or closed the ...
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how can I have equivalent exposure and identical white balance while changing f stops using speedlight?
how can I have equivalent exposure and identical white balance while changing f stops using speedlight? im shooting from shoes when it comes to the moment of changing f stops from 5 to 16 in order to ...
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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 ...
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Why is my Tamron 24-70 F2.8 G2 clicking when used in Live View mode?
My Tamron 24-70 F2.8 G2, used with Nikon D750, is making clicking sounds when I change the aperture in live view mode on M or A setting. Is the clicking normal?
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How is the diameter of a non-circular (effective) aperture actually measured?
An f-number is determined as the ratio of the focal length to the diameter of the entrance pupil. But the actual aperture diaphragm is usually not a perfect circle. Its shape is determined by the ...
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Why do lower f-stop numbers mean larger apertures? [duplicate]
I thought this would have been asked before but it seems not.
I don't understand how f-stops are numbered. From what I read, the lower the f-stop number, the larger the aperture. That is, f/2 is ...
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Nikon D3400 aperture
I recently ordered the Nikon AF FX Nikkor 50mm f/1.8D Lens for my Nikon D3400, but when i try to take a picture, my aperture won’t open at all. I am shooting in manual but it still won’t work. I did ...
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What makes the difference on partially and fully visible moon?
While I'm satisfied (despite the fringe) with shoots from a partially visible moon with a cheap 500 mm lens:
1/100 ISO 100 f/?
I cannot understand why the image quality is extremely diminished when ...
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Changing depth of field of Nikon D5200
I've been trying to change the depth of field on a Nikon D5200 for 2 hours and I can't seem to get it to work. I have to take photos and videos of people tomorrow (this is not my camera). The depth of ...
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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 ...
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How do I find the right motion blur/depth of field trade off in sports photography?
I could be wrong but when doing sports photography I'm always thinking about the following trade off:
A fast shutter speed to freeze the action.
A small(er) aperture to increase DOF and thus ...
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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 ...
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How can I keep the same shutter and aperture for a series of photos, while still letting the camera figure it out automatically?
I want to take a series of photos of a still object from changing locations. All photos should have the same aperture, shutter and color balance to avoid any differences in brightness/color in the ...
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Why isn't my variable-aperture photo more interesting?
I took a photo where I changed the aperture of the lens during the exposure. I was hoping to get a cool or unusual effect, but I didn't. Why not, and is there any really interesting effect that I ...
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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 ...
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What aperture control enabler will let me use a Nikkor G lens on a Nikon F3?
I have a Nikon F3 and an AF-S Nikkor 50mm 1:1.8 G Lens. What aperture control Enabler do I need?
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How to take pixel-for-pixel aligned pictures with a DSLR and iPhone 7?
The Plan
So I am trying to take two pictures, one with a DSLR and one with an iPhone 7. Why an iPhone 7? That's just what I own currently I want the photos to be aligned so that they are exactly the ...
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Are there any lenses have smaller apertures than f/32?
While most photographers prefer fast lenses that range down to f/1.2, are there any lenses that go smaller than f/32? If there are, what is so special about those lenses that an aperture of f/32 ...
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Why no zoom lenses with a maximum aperture wider than f/2.8?
I can understand that a zoom lens with a maximum aperture wider than f/2.8 would be difficult and costly, but it seems like something pros would kill for. Surely it can't be more expensive (if its ...
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How to focus on long distance with object in front and blur the object?
Recently, I saw a blog post by Julia Trotti and I wonder how to achieve the same effect with Fujifilm X100T.
The effect can be seen in this photo. The landscape is in focus while object is blurry. ...
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Nikon D7000 thinks aperture of non-cpu lens is always 16 and overexposes photos
I have a non-cpu lens with manual aperture control (I use the aperture ring to set it, and it stays that way when I shoot). My D7000 used to work fine with this lens in A mode - all images were ...
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Do I use the crop factor in calculating aperture size and area?
How do I calculate the aperture size and area, considering an 35mm equivalent focal length value and non-equivalent aperture f-number (in terms of exposure, no multiplication of the crop factor of the ...
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Can I force the aperture to stay open on macro lens?
I have a sigma 180mm f/2.8 lens, which I bought because it was the largest aperture I could find that focuses around 0.5m See this question for why this was important.. Upon arrival, however, the lens ...
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Does a bigger aperture create better photos?
I have observed that the wider the aperture, the more expensive the lenses are. However, I would like to know whether it really makes a difference in your photos or not?
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Does using an extender actually change the aperture of the lens?
I just bought a Canon 2X extender and I always believed that it would only result in 2 stops' loss of light and not change the aperture.
However, when I tested this extender on a Canon 135mm f/2 ...
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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 ...
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Do the same camera settings lead to the same exposure across different sensor sizes?
Let's say I have a micro-4/3rd camera and a full frame camera, both set to 1/60 at f/2.8, taking a picture of the same scene in the same lighting. Will the exposure be the same across both cameras ...
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Can I change the camera aperture value on my Honor 8 phone?
I am planning to do some macro photography with my Honor 8 phone,
i got a macro lens to clip over the phone.
the problem is, i need more depth of field and hence i need to increase the f-number, the ...
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How do DSLRs figure out what aperture to select in P mode?
In program mode, DSLRs adjust not only the ISO and the shutter speed, but also the aperture.
The aperture has a huge impact in some situations. For example, when shooting a close subject in front of ...
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Are Nikon lenses with electronic aperture compatible with extension tubes with electronic contacts?
Can extension tubes with electrical contacts be used with Nikon's electronically-controlled aperture lenses, such as the Nikkor 16–80mm f/2.8–4E ED VR, when combined with a compatible camera body, ...
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How to ensure sharp focus when shooting with an open aperture?
I've bought a Canon EF 50mm f/1.8 to use with my EOS 200D and while I love the wide aperture, it appears to be quite difficult to achieve sharp focus on people's faces when shooting at f/1.8. I've ...
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Why is the aperture of this old lens showing as centered blue glare?
I just bought a old Minolta MD Zoom 35-135mm 1:3.5-4.5 lens together with two old Minolta SLRs to get into film photography.
Before using actual film I adapted it to my Canon 600D (using a no-name MD-...
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Reasonable setup for ultra long exposure for this kind of photo using Nikon D750
I'm using Nikon D750, and intend to take a ultra long exposure
picture such as this (by Michael Kenna).
What's is the reasonable shutter speed and aperture for that?
If I use shutter speed 2 hr what ...
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How can I see the photo settings like f-stop, ISO etc. of a image?
I am new to photography and enjoying shooting with my Nikon D3200 camera. Once I take a photo, is there any tool by Nikon or a third party which can give me info like F-stop, ISO, Shutter speed, etc? ...
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Exposure preferences
Whenever I shoot with my Nikon D5300 in manual mode I set settings so that photos have bit more pop to them - brighter than what the camera exposure meter says the correct exposure is.
For instance, ...
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Why doesn't the f-stop on my D7100 change when I hold +/- and change the dial in manual mode?
On my Nikon D7100, the f/stop will not go down from 14 when I hold down the +/- button and turn dial. All I get is a little number below but the photos do not change exposure when I change this number....
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Why doesn't the aperture change when I turn the ring on my Nikon lens?
I have a Nikon D5300, and I have a Nikon ED AF Nikkor 70-300mm 1:4-5.6 D lens. I cannot change the aperture manually in the lens — I can't take photos when I turn the ring.
I want to buy a Rokinon ...
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