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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Do non-constant aperture zoom lenses vary aperture when zooming, when the aperture is not set to wide-open?
I am an experienced amateur photographer and videographer using a Sony a7sII with a Sigma 28-300mm f3.5-6.3 hyperzoom lens for a music video shot. I notice that when I test the shot zooming out all ...
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Blurry images with telephoto lens at low f-number
I have a Nikon D7200 with a Tamron AF 70-300 mm 1:4-5.6 Tele-Macro lens. When I use low f-numbers, i.e. 5.6 (lowest possible at high focal lenghts), the image becomes very blurry. See example images ...
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In-between aperture settings on the Fuji GW690 III
I have a Fuji GW690 III medium format film camera. There is a ring on the lens where you select the shutter speed and the aperture. The lens is built-in to the camera, and is the 90MM f/3.5 version.
I ...
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Brightness of a full frame lens mounted on aps-c vs mounting an identical native aps-c lens [duplicate]
I am a bit confused about the effect of using a full-frame lens on a aps-c camera on the brightness of the resulting image.
Lets say we have two lenses:
A full frame 50mm f2 lens
An aps-c 50mm f2 ...
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5
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How do I lock the aperture to a small setting so I can focus on the sun with my DSLR's viewfinder?
I have a Nikon D5600 with the Nikkor DX AF-P 70-300mm lens.
While taking practice shots of the sun to prepare for the April 8 2024 eclipse, I noticed that even while using a mylar solar filter, the ...
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Am I overexposing my film?
I’ve just had my first colour film back (kodak gold 200) and lots of the photographs have come out washed-out, low saturation and very white! Lots were taken in sunlight which I tried to account for ...
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Why do people not use large f-numbers (small apertures) when shooting landscapes, when you want large depth of field?
When some people take photos of the landscape, why do they not use like a low f-stop like f/32, because wouldn't you want everyone in focus because it's a landscape?
But quite a lot of people use f-...
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How can I get a large depth of field at night?
I am new to photography and have a question on aperture. What if I wanted to take a picture with majority of the picture in focus, but at night time, so I can't have the aperture too high, because it'...
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Why is aperture expressed as a function of focal length and not in absolute size?
Why is aperture expressed as a function of focal length (eg. f/2, f/4), and not in absolute size, say mm (eg. 40mm)?
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Relation between half angle of numerical aperture and angle of view
The numerical aperture is defined as
$$\mathrm{NA} = n \sin{\theta}$$
where \$\theta\$ is the half-angle of the acceptance angle of the lens.
For a lens consisting of multiple elements, is there any ...
- 539
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Why isn't my F Stop changing on my Nikon D7200?
I can use the dial but the number never goes up or down. It stays at 0. I tried holding down the +/- while turning the front dial and it just adjusts the amount of light coming into the view finder. ...
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2
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Aperture not opening completely when set to completely open
I noticed that my lens when stopped down wasn’t behaving accurately
I mean this is the F7.1
and this is the f8
as you can see, its an image of a lightbulb, very bright, pretty much impossible for it ...
- 203
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What does it mean to have a fixed lense aperture with variable camera aperture? [duplicate]
I recently ordered the Nikon Z 24-120mm f4S and one of the features every reviewer sort of mentioned is its fixed f4 aperture. ...
- 113
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Best settings for photographing 200 paintings indoors with floodlights and a tripod
I want to photograph about 200 acrylic paintings done by a family member who now has dementia. It's meant to be a tribute in the form of a self-published book. She had painted as a hobby her entire ...
- 113
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Why is the standard f-number system not consistently rounded?
The standard f-numbering system can be calculated by the square root of powers of two. Commonly used today is the 1/3 system, as it can be found here: https://en.wikipedia.org/wiki/F-number#...
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