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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3k views

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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1answer
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Depth of field and aperture size [duplicate]

Why does a smaller aperture size have a high depth of field? What is the physics behind this?
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How can a smartphone take pictures of a landscape with everything in focus?

After the announcement of the new Samsung Galaxy S9 with the new camera that changes aperture, I caught myself wondering: if smartphones have such a wide aperture (f/2.8, f/2.2, etc), how are ...
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Why does wider aperture make snowflakes look bigger?

Recently I went out to shoot when it was snowing. I was playing around with different aperture sizes and exposure times. What I have noticed that the wider the aperture, the more snow I can capture ...
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2answers
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What should I set my aperture to when there's a lot of light outside? [duplicate]

I'm just looking for a simple reminder when it comes to aperture, such as: when there's a lot of light in the atmosphere where a photo is exposed, the aperture should be low, or something. The more ...
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Aperture won’t lower [duplicate]

I have Tamron 90mm f/2.8 Macro Lens on my Nikon D5500. I’m trying to get my aperture to go to its lowest which is 2.8, however, I can’t get it to go lower than 3.0 or 3.5 (its lowest changes often and ...
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1answer
380 views

Is a lense with an aperture larger than f/8 useful with an EOS 80 D?

I have a EOS 80D and supposedly it has a max aperture of f/8. Does this mean that my camera can't take advantage of lenses with larger aperture? E.G. This one for example: Canon EF-S 24mm Camera ...
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1answer
1k views

The right aperture for capturing stars?

I recently had the chance to photograph an astronomical event - and this was my first foray into night-sky photography. I had two lenses that I used: 85mm f/1.2 shot at f/1.2 through f/2.8 16-35mm f/...
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3answers
691 views

Aperture formula

My camera is Fujifilm s7000 (bridge) . On the lens I can see f = 7.8mm - 46.8mm . When using the formula should we use 35mm equivalents values ? Does optical zooming change the focal length? ...
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2answers
706 views

My Tamron 100-400mm f/4.5-6.3 jumps to f/6.7 beyond 360mm

I got a brand new lens today: a Tamron 100-400mm F/4.5-6.3 Di VC USD. I have mounted it on my Nikon D80. This lens seems to have a problem with its aperture: At 100mm, I can operate from f/4.5 ...
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803 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 ...
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4answers
285 views

How to take photo of water splash without photo getting dark? [duplicate]

I just got my beginner DSLR (Nikon D3300) and tried to take a photo of a water splash. I read about aperture, ISO and shutter speed and I know if I set high shutter speed I need to set low aperture ...
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1answer
527 views

Why can't I adjust exposure on my D90 in aperture-priority mode?

I have a Nikon D90, and I usually prefer to shoot in Aperture priority mode. However, recently when I go into Aperture mode, I can adjust the aperture, but I can't adjust the exposure, and the hash ...
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2answers
566 views

Do modern IF Macro lenses have true constant apertures?

From my basic understanding f/stop is the ratio between the aperture size and length of the lens. A majority of macro lenses feature an extending barrel. So naturally, a fully-extended f2.8 lens, ...
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5answers
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Why does the autofocus capability depend on the aperture rather than the amount of light available?

In many DSLR manuals one can read something to the effect of: Maximum Lens Aperture: f/3.2 - f/5.6 With all AF points, cross-type AF sensitive to both vertical and horizontal lines is ...
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4answers
317 views

Which aperture value determines depth of field on variable aperture lenses?

Do variable aperture values represent the way in which depth of field is rendered by a lens or only to the transmission of light (i.e the brightness)? For example, if i wish to calculate depth of ...
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2answers
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Does the sensor size matters in the size and weight of an equivalent lens? Why?

In other words, does the size of projected image circle matters in the size and weight of two lenses with the same aperture/DOF (different f-number) and field of view (different mm)? All other things ...
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1answer
170 views

Why am I getting ERR 1 on my 80D when I shoot with a small aperture?

Whenever I try to take a picture with a small aperture, say f/13, the camera won't shoot and displays "Err 1: Faulty Lens Communication, Clean Lens contacts" and upon doing so, it won't change a thing....
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2answers
422 views

Exposure compensation after images are taken

I have a stack of image tiles (taken from a drone) that I want to mosaic to a single image. I want to do exposure compensation to reduce the variation in illumination between the image tiles before ...
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1answer
152 views

Getting two subjects sitting across the table in focus

Hoping to get some tips on photographing two subjects sitting across each other a table (the table is maybe 2 feet long). They’ll be at the same distance from the camera just a few feet away from each ...
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3answers
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Why is aperture stuck at F1.8 on Yongnuo 50mm for Canon EF?

I recently bought a Yongnuo 50mm for my Canon 5D MkIII. I'm having problems adjusting the aperture, it seems like it always shoots at ƒ/1.8. I adjust the aperture in the camera up to ƒ/22 but it ...
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2answers
279 views

Transmission, Aperture, and Focal Length in Low Light Situations

I've been looking for an affordable lens I can use for nighttime shooting, including astrophotography. The two lenses I have found that seem best suited for this are the Samyang 16mm f/2 and the ...
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1answer
126 views

When does the aperture ring close when using exposure-delay mode?

I understand mirror slap can introduce unwanted vibration. But what about the closing of the aperture ring, especially with a telephoto lens? I'll be using exposure delay mode with a tripod. When does ...
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6answers
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What is the correct way to describe better camera, aperture f/2.2 or f2.2?

I am hearing lot of people/website talking about aperture very often. But different website writes it different way. What is the correct way to mention it? E.g. If some good camera phone has ...
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1answer
630 views

Choosing an aperture for long-distance landscape photography

I'm working on a project to make some photographs of a certain rock climbing area. The cliff face is tall and located in a mountainous area, so in order to get reasonable perspectives, I need to hike ...
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6answers
2k views

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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6answers
911 views

Is it focus or depth of field? [duplicate]

I was trying to shoot a group of people standing clumped but at different distances, quite close to me, think disorganized portrait. I have a Nikon d750, and was not able to get everyone into focus. ...
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6answers
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Why use ISO instead of Aperture and Shutter speed? [duplicate]

I am a beginner in photography and I don't have the right understanding for some things. As I understand, with the ISO the camera is more or less sensitive light, with a darker image, a higher ISO (...
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1answer
247 views

Nocticron aperture ring only works with Panasonic bodies?

I just got the Lumix Nocticron 42.5mm lens and in the manual on page 7 it reads: The aperture can be adjusted with the aperture ring only when a Panasonic digital camera is attached to the lens. (...
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2answers
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Why does my Rokinon lens have no aperture control on my screen?

Hello.. I am a beginner photographer, I'm shooting with a Nikon D5500. I just purchased a Rokinon ( lens)24mm T1.5 ED AS IF UMC (for Cinema) so I noticed that I can't change the aperture on my ...
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1answer
132 views

Why is Auto on aperture rings near the smallest aperture?

This is something that has puzzled me for a while and it always seems counter-intuitive. When a lens has an aperture ring with an auto position (A), it is always (at least on 3 systems that I have ...
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1answer
321 views

What are some general rules for astrophotography?

What are the generally accepted guidelines for iso, f-stop, aperture, etc. that help take better pictures of the stars? In the past I've mostly used a small webcam that fits over the eyepiece of my ...
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6answers
4k views

Why do we need a DOF preview button?

Why not just show the effective depth of field, by default? What's the point of having it display a picture that's different to how the image will actually turn out? My first thought was, it must be ...
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2answers
375 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 my pictures later, I am noticing that the aperture goes to 5.6, 6.3, 7.1, ...
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3answers
1k views

How can I refocus a downloaded Huawei P9 image?

I know of course, I can do it with the camera app on the phone if the "Aperture mode" has been activated. Is it possible to refocus such image once it's downloaded from the camera? How?
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6answers
9k views

Do f-stops scale with sensor size the way focal length does? [duplicate]

Does the aperture rating scale with sensor size the way focal length does? For example, is a 25mm 1.2 MFT lens equivalent to a 50mm 1.2 FF lens or to a 50mm 2.0 FF lens?
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1answer
1k views

Nikon 50mm f/1.8 even on manual gives fEE error with D3300? [duplicate]

The camera functions fine from f/1.8 all the way to f/22 when I lock the aperture ring at f/22. Whenever I try to use the aperture ring, however, it gives an fEE error and that is even on manual mode ...
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2answers
963 views

What could cause a Nikon D5100 to take completely black pictures?

Recently my camera will take pictures fine, but sometimes between pictures the aperture setting changes from showing (say) "9" (to represent f/9) to showing "--". After this, if I take a picture it ...
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1answer
276 views

Why is my Mamiya-Sekor E f/1.7 lens stuck at f/16 both on and off the camera?

I recently bought a Mamiya ZE Quartz with a Mamiya-Sekor E f/1.7 50mm lens that I recently found at an antique store. It's either been abused or been used a lot, but it's seen better days. For some ...
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2answers
239 views

How do I photograph the sun with a 2000mm lens?

I have an 8" meade schmidt cassigrain 2000mm. That is suppose to be perfect for photographing the sun. I'm using a cannon eos and the t adapter. The sun fits side to side, but is too large top to ...
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5answers
1k views

Lens for beach and portrait photography

I own a Nikon D3300, which I bought along with an 18-55mm f/3.5-5.6. I am a complete newbie and until now I've been shooting in auto mode. Recently I learned about Aperture, Shutter speed and ISO ...
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3answers
2k views

Does opening the aperture improve color contrast? (Open aperture producing more punchy colors / closed aperture more dull colors?)

I'm using some SLR legacy lenses on a mirrorless camera that I have, and I am under the (subjective) impression that if the aperture is wide open, the colors are more vibrant, while closing the ...
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3answers
487 views

Why are certain apertures so popular?

Popular f stops in lenses are typically f/1.2, f/1.4, and f/1.8 for portrait lenses. The reasoning behind that is pretty self explanatory. Moving up past 1.8, I see some f/2.2 lenses occasionally, ...
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1answer
2k views

Why are aperture settings visible when previewing photo on camera screen?

i know that title sounds pretty stupid but please take a look at the image that was taken (Nikon D3000): Anybody have an idea what could be wrong?
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3answers
81 views

What is optimum setting for capture in night from moving objects, when diaphragm is fixed?

I have a camera and I want to capture real-time photos continuously from moving objects in night. my problem is if i reduce exposure time, image will be all black, but with higher exposure, objects in ...
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2answers
3k views

Does this telescope only have a 4 blade aperture?

I was just looking at an image from NASA's APOD project I noticed that the starbursts are directly horizontal and vertical. If I recall correctly, on my DSLR I get one "ray" per blade. So does that ...
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1answer
1k views

How to get a blurred background using a Canon 18-55 STM lens? [duplicate]

I'm totally new to photography and need your help. I've read much about ISO, Aperture and Shutter speed. I know to get a blurred backround: use a wide aperture. Also I know the distance between ...
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3answers
170 views

What type of lens should I buy if I want strong out-of-focus blur?

I'm looking for a lens to focus on one thing, and the background is really blurred out. I also want really good quality. I was looking a 50mm prime.
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3answers
887 views

How do I properly compare this full frame lens to cropped frame lenses?

I am looking for a 35mm e-mount lens to put on an APS-C camera. The obvious choices are the 35mm Sony F1.8 with OSS, and the Zeiss Touit 32mm F1.8, but as I've been looking at those options I see a ...
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2answers
5k 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 ...

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