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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68
votes
4answers
152k views

What does f-stop mean?

What does f-stop mean? Is it the same thing when people say "2 stops" for example?
2
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3answers
459 views

What's the intended use of lens with f-numbers close to or “faster” than f/1?

Lens with f/1.2 are rather expensive and not very widespread. Lens with f/0.95, f/0.85, f/0.8 do exist but they are also very expensive and quite rare. Lens with f/0.7 are so rare that some of them ...
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6answers
908 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. ...
6
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6answers
5k views

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 (...
0
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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. (...
0
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5answers
2k views

Which smartphone camera would give better low-light picture results?

Just interested in choosing the right smartphone for lowlight photography I have following contenders. Option 1 has 16 MP, Aperture f/1.8, OIS, with sensor size 1/2.6" and 1.12 μm pixel size Option ...
1
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2answers
2k views

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 ...
3
votes
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 ...
1
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1answer
129 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 ...
0
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1answer
319 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 ...
1
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10answers
12k views

Is an aperture range of 3.5-5.6 shallow enough to provide great bokeh on a cropped sensor?

I have been primarily shooting with a Canon 18-135 f/3.5-5.6 for several years now, and I am not completely satisfied with it. The problems I have are: A bit too wide on the low end A bit too short ...
2
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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?
11
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3answers
6k views

What are the theoretical minimum and maximum apertures?

Is there such a thing as a maximum aperture that a lens can be open to? What about a minimum aperture that it can be closed to? Do these concepts even make any sense? Is there a lens with the ...
1
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2answers
373 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, ...
0
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1answer
537 views

Can you adjust Aperture in [Tv] mode on a PowerShot G7 X?

I do not own a PowerShot G7 X, but my friend does. We want to know if it is possible to adjust the aperture when in [Tv] mode, so that she can try for milky water on a waterfall. Is this possible?
3
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4answers
15k views

Can I use a large aperture of f/2.8 while shooting landscape photography?

Can I take a picture of a wide area such as a big house at 10m, in low light, using a large aperture of say f/2.8, at a focal length of 50mm? I will have no subject between my camera and the house.
14
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6answers
11k views

What is the meaning of “stopped down”?

Was reading this answer (emphasis mine): It also tells us that the lens was stopped down, as if it were wide open there would be no corners to cause diffraction, regardless of the number of ...
0
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2answers
945 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 ...
0
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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 ...
0
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1answer
2k views

fEE error using Nikon 85mm1.8 with nikon D80 camera [duplicate]

Does the Nikon 85mm 1.8 D work correctly with the Nikon D80 body? I just received mine today and keep getting error reading fEE when the lens is set to all apertures except f/16.
1
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2answers
237 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 ...
0
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1answer
273 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 ...
1
vote
1answer
2k views

Aperture not stopping down on Tamron lens

I have an EF-mount Tamron 70-300mm f4-5.6 lens that seems to have developed a problem. On all focal lengths from 70mm to approx. 200mm, the lens works flawlessly. When the zoom ring goes above 200mm, ...
2
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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 ...
5
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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 ...
5
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3answers
482 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, ...
14
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3answers
2k views

How do zoom lenses restrict their widest aperture at the telephoto end?

Does the aperture ring lock the apertures beyond, say 5.6 at length lens's telephoto end? Does the lens introduce an obstacle to the aperture ring so the lens can't be opened anymore beyond the ...
6
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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?
0
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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 ...
-1
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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 ...
34
votes
4answers
7k views

How do you find out the “sweet spot” of a lens?

I've tried googling this, but have never found a satisfactory answer. I've heard the term "sweet spot" thrown around by some photographers to mean the f-stop of a lens which results in the highest ...
4
votes
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.
12
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7answers
105k views

Why is my Nikon 50mm f/1.8 giving me an fEE error?

I have a AF Nikkor 50mm f/1.8. When I have the aperture setting on the lens to 22 I can take photos. But when I change the dial to anything other than 22(lowest f/stop) then I get a flashing fEE ...
0
votes
3answers
886 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 ...
6
votes
4answers
5k views

Does the same aperture at a shorter focal length allow for faster shutter speeds?

I was about to ask why the new Canon 24-70mm F/2.8L II doesn't have IS, but then I came across the answer to Why there is no Canon 50mm *IS* lens? and it got me thinking... (The short version of the ...
4
votes
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 ...
4
votes
6answers
16k views

In what kind of scenes does it make sense to use f/1.4 aperture?

I have been told that it is difficult to focus with an aperture of f/1.4. So, in which kind of scenes does it actually make sense to use the f/1.4? In portraits they say that it is important to keep ...
6
votes
2answers
939 views

Do apodization screw-on filters or alternatives exist?

Recently I saw an article about the new sony lens with apodization element. This element should basically be a piece of glass with a circular graduated filter, placed close to the diaphragm. ...
1
vote
3answers
44k views

Why can't I adjust the aperture in manual mode on my 5D MkII?

Lately I have been having trouble adjusting my aperture when my 5 d mark 2 is in manual mode. Usually I am able to turn the thick dial at the back of the camera and adjust the aperture. Lately this is ...
2
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2answers
5k views

What does the aperture range in a lens name mean?

Regarding lens descriptions, what does the relationship between aperture range f/3.5-6.3 and focal length range 18-270mm mean? How does this work?
2
votes
4answers
567 views

Where is the aperture?

Where and how is the aperture placed inside a lens? How come the image is not affected (no obscuring) by something inside the lens literally blocking light?
0
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1answer
799 views

F-stop and behaviour of aperture with change in focal length in a zoom lens [duplicate]

I have two related questions regarding behavior of aperture area/diameter with respect to various focal length in a zoom lens, like, Canon EF-S 18-135mm f/3.5-5.6 (with variable aperture and variable ...
0
votes
1answer
3k views

Does the diameter of the aperture increase with increases in the focal length with constant F-number(F-stops)? [duplicate]

What I have learned from the definition of F-number is that; The F-number (sometimes also called focal ratio, f-ratio, f-stop, or relative aperture) of a lens is the ratio of its focal length divided ...
0
votes
1answer
971 views

Dust visible on pictures with small aperture

A few months ago I took my then new camera (Nikon D7200) out with a tripod to take some small aperture shots. I noticed a significant amount of artifacts on the resulting pictures. A quick Google ...
0
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2answers
2k views

Does Zooming the lens Changes the Aperture? [duplicate]

Hello Photographic Lovers, Aperture is what the power of lens to open and close so as to control the light. So When we Zoom in the lens and see the far objects, then it changes the aperture. So ...
2
votes
2answers
658 views

Is wide aperture required when shooting faraway objects in low light conditions?

Assuming the following: the subject being shot is lit rather poorly no flash because the subject is far away the subject being shot doesn't move the camera is on tripod and doesn't shake no other ...
48
votes
4answers
38k views

What apertures are required to enable autofocus, including cross-type or high-precision focusing, on Canon DSLR cameras?

This is a follow-up to Why does Canon and Nikon limit or disable autofocus beyond certain f-numbers? I'm doing this to separate the AF aperture requirements from the linked question above. My goal ...
1
vote
1answer
563 views

Zoom, Aperture size and focal length [duplicate]

I am very new to photography and have been working my way through a few books and magazines trying to learn how to use my camera more effectively. I keep getting stuck on the differences between the ...
1
vote
1answer
614 views

I can't get the aperture to stay at f/4 and shutter speed at 1/1000 in manual mode on a sony a6000

When I set the aperture and shutter speed on my a6000 in manual mode the aperture always changes when I take the photo. I am using a sony 24-240mm lens f/3.5-6.3. It does the same in aperture mode. ...
1
vote
2answers
2k views

Will my camera autofocus over the full range of a telephoto lens with variable aperture?

I'm looking to get a Sigma 150-500mm f/5-6.3 for my Nikon D3300. I've been trying to wrap my head around the crop factor and how that works and how it affects auto focus. Spec sheet for my D3300 say ...

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