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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No1 Pocket Kodak aperture 1 to 4, f stop equivalent?
I have a lovely little No1 Pocket Kodak from about the 1920s or 30s. It is the bottom of the range model with the "Single lens". The aperture is not marked in f-numbers, but just labelled 1, ...
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Astrophotography-what wrong I am doing here?
I am beginner in photography.I clicked this photo in RAW, f3.5, ISO1000, S15", Manual focus without tripod.Lens: Nikon AF-P 18-55mm.
I think it is out of focus. I varied ISO from 1000-2500. Shutter ...
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Clicking sound and flickering display when using Sony 70-200 F4
I recently purchased a Sony 70-200 F4 and have been testing it on my A7 (the very first one). I noticed that there's a clicking sound and the display (both in the LCD and EVF) flickers whenever I ...
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Why is that the wider the aperture of a lens is, the more we can see through narrow cracks and crevices?
Example I took at 85mm f/1.4 on APS-C sensor:
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Why is Nikon 1.4g better when Nikon 1.8g is sharper?
I am new to photography (just 3 to 4 months of experience) and I am looking to buy a new lens (either 35mm or 50mm, but mostly 35mm because I have already decided Sigma 85mm f/1.4 DG HSM Art Lens for ...
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What is the preferred aperture of a lens for landscape photography?
I've noticed that the wider aperture is more expensive on lenses. Two of Canon's lenses that they categorize as Landscape can be seen here. The EF 16-35mm f/2.8L III is twice the price of the EF 16-...
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Panasonic Lumix G 42.5mm F/1.2 vs Panasonic Lumix G 42.5mm f/1.7 ASPH Power O.I.S
How much of a difference these two lenses will make in photo quality and what will be the difference? I am a newbie in photo and I am looking to invest in a nice lens for 4/3 that has max features in ...
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How to get bokeh or macro on E-M10 Mark II with 14-42mm Black EZ Lens? [duplicate]
I got E-M10 Mark II with 14-42mm Black EZ Lens f3.5-5.6 EZ.
Is it possible to create nice bokeh and macro pics with this set up?
I tried shooting many pics (well mainly on auto), but I never got ...
- 143
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What is the possible optimal range for shutter speed, aperture, and ISO settings in product photography setting on white background?
I have an e-commerce store where I have to take product photography on a white background and I want to actually have a "standard" set-up for this. I know there is no one right answer to this because ...
- 319
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How do apertures which seem too large to physically fit work? [duplicate]
A 400mm f4.0 lens is supposed to have a maximum aperture diameter of 10cm. Looking at such a lens they don't seem big enough to fit that kind of aperture including all the mechanics for control inside ...
- 243
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What is the formula to calculate aperture ("diaphragme" in French)?
Let's say I have these data for my camera:
t : Exposure time in seconds ("temps de pose" in French)
C : Incident-light meter calibration constant ("constante lumière incidente" in French)
S : ISO ...
- 109
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Do f-stop and exposure time perfectly cancel?
I am photographing a scene with white and black elements in it. Starting at the f/22 stop, I widen the aperture one stop and decrease the exposure time by a factor of 2, take a picture, and keep doing ...
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Why the difference between sunny f/16 rule and looney f/11 rule?
There's the sunny f/16 rule that says photographs on a sunny day should use f/16 with the exposure time set to reciprocal of the ISO sensitivity.
However, there's also looney f/11 rule that says ...
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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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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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How to stop aperture indicator from flashing when in shutter priority mode with manual ISO on Sony a6000?
When shooting in Shutter mode I can't get the aperture indicator on the screen to stop flashing when I set an ISO value.
I'm using a Sigma 60mm F2.8 fixed lens.
I've tried taking a shot in ...
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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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2
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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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3
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805
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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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What are the technical reasons to design lenses with oddly shaped apertures?
Some lenses have oddly shaped apertures, like star or shuriken shaped. It seems to be intentional since making "normal" rounded or polygonal apertures is fairly simple (as I have observed while ...
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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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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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Can too-tight lens hoods become accidental apertures?
There is frequently the suggestion to use tighter lens hoods than specified for some lenses when they are used with smaller sensors than they are designed for.
The idea is that the vignetting ...
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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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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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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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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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