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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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3
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2answers
423 views

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 ...
0
votes
1answer
70 views

Can't duplicate Auto results in M, Tv, and Av Canon 70D

I've been a an amateur photographer for several years. I understand the technical side and enjoy explaining it to others. But...with my 70d, which I've owned for over a year, when I take an indoor ...
1
vote
3answers
239 views

What is the sweet spot of the Canon's 18-55mm IS STM lens?

I'm plannning to photograph negative film like this. And I would like to know what would be the sweet spot of my lens to achieve best sharpness possible, what f stop and at what mm I should be ...
0
votes
2answers
73 views

How does aperture affect focus area? [duplicate]

How does the aperture affect the focus area? Here are some examples: With an 35mm(50mm)/f1.8 prime lens What f-value will bring a group of people standing in five rows into focus? What f-value will ...
2
votes
4answers
448 views

Does a full frame lens require more light on a crop body?

When using a full frame lens on a crop body, does the lens require more light? If I use an f/2.8 full frame lens on a crop body, does it become an f/4.2 (*1.5)?
12
votes
3answers
1k 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 ...
2
votes
1answer
90 views

Why don't the Shutter Speed, Exposure Time, Lens Aperture, and F-Number metadata values from my camera make sense?

I was just looking at some digital image properties, and it did not seem to make sense. Shutter Speed: 1/16 sec. Exposure Time: 1/11 sec. Lens Aperture: F/1 F-Number: 2.8 I would have thought that ...
4
votes
4answers
296 views

What is the relationship between ISO, aperture, and shutter speed?

I know digital cameras have ISO options, and that ISO is the camera's sensitivity to light, but if you set higher ISO then you can get a noisy image. I also know there are two other camera options, ...
1
vote
4answers
105 views

Does aperture effect the “depth” of faces in a portrait? Wide aperture make noses look shorter, wrinkles less pronounced?

Having a debate with myself that F/10 makes my portraits look better by making faces have less "depth." What I mean is I feel like wider apertures such as f/4 make my nose look longer and wrinkles ...
-2
votes
1answer
45 views

Autofocus with canon EOS 1200d [duplicate]

Can my EOS 1200d autofocus with1.4x canon teleconverter and canon 300 mm f4 lens. What will be my maximum aperture using both of these.
6
votes
10answers
3k views

How can I avoid this blur during taking indoor party pictures?

I tried taking some photos during an office event and noticed that they are all blurred. Can someone suggest what can I do avoid/reduce this ? A sample Picture is given below: **Larger version at ...
12
votes
10answers
3k views

Do photographers avoid using zoom?

Because most lenses do no have a fixed aperture, do most photographers avoid using zoom as to avoid messing up their settings and their established exposure?
0
votes
2answers
98 views

Why is my aperture limited to less than the maximum even in manual mode? [duplicate]

Equipment: Nikon D7000 with a 18-105mm lens that comes with it. Level of photographer: novice I've read that the aperture levels change depending on focus. Is there any way in manual mode to stop ...
0
votes
2answers
88 views

How to do custom bokeh on Nikon D3200 with 18-55mm lens (f3.5)? [duplicate]

I am attempting to use custom bokeh for an effect in which words appear in out of focus lights. After many experimentations i still can't manage to get it to work, i believe this is largely because of ...
1
vote
3answers
198 views

What's the furthest you should stand with a 35mm lens at f1.8?

I understand the principles of depth of field, but am unclear as to what the recommended further distance is when you want to use a lower f stop. Surely at some point, your subject will go out of ...
3
votes
2answers
76 views

What's worse for post-processing blurriness, graininess or softness?

Context Using an a6000, I've been learning a lot about photography and how to control the depth of field (by changing the aperture), blurriness (by changing the shutter speed), and the noise ...
2
votes
4answers
728 views

Simply bad focus or too big aperture?

I have made a mistake with this image: ISO 400 | 1/1700s | f/2 I used manual Aperture mode and set it to F/2 (now I believe this is too much). Kids were one meter away. It was light cloudy ...
0
votes
1answer
59 views

What is Aperture in Camera? [duplicate]

This is first of my few questions coming up on cameras. I cannot ask all in one question as they relate to different topics. My first question: What is Aperture in Camera? Why Having a bigger ...
3
votes
3answers
276 views

Why is actual exposure changing as I go from one extreme to the other in aperture priority mode?

I just got my first DSLR, Nikon D5200 and after reading various tutorials and understanding basics of Exposure Triangle, I was out for testing my knowledge to get a practical view of how things get ...
3
votes
1answer
67 views

Can Nikon PK-11a extension tubes be used with G lenses, keeping aperture control?

I own a D3200 and 3 G lenses (kit lenses + 35mm f1.8G) and I was wondering if I could use an extension tube PK-11a with them keeping aperture control functional. At Nikon website seems to say no, but ...
1
vote
3answers
166 views

What factors make a lens brighter? [duplicate]

Let's say I have two lenses of 50mm, one with maximum aperture f/1.8 and another with f/1.4. I understand that when using maximum aperture, for the latter lens more light will get to the film or ...
1
vote
2answers
201 views

Are there lenses f/1 or wider that work on EF or E-mount?

Which lenses have apertures at f/1 or better, and work on cameras like the 6D or A7? In Sony's case, an adapter is acceptable.
0
votes
2answers
119 views

Why are only certain values used for the aperture?

Why are only certain aperture values (i.e. 1.4, 2.0, 2.8, 4, 5.6, 8, 11, 16, 22) used? Is there a reason we can't use anything other than those values - for example, 1.8 or 2.7?
2
votes
2answers
132 views

Automatic Depth-of-Field in modern cameras?

What modern cameras (DSLR or mirrorless) have automatic depth of field exposure setting functionality? It would be desirable for example to specify a desired DOF based on subject size (or 'depth') ...
4
votes
2answers
161 views

How can I more consistently focus on the point I want?

I've had so many wonderfully composed images turn out lousy because my AF isn't as accurate as I'd like (or I don't know how to wield it). Despite using single-point AF, my focus point is often ...
6
votes
5answers
2k views

Is it possible to change depth of field in RAW images?

I am beginner to photography, and I've learnt that we can do a lot of post-production in images by using RAW format. I'm looking for options to change/modify the depth of field in the RAW images - is ...
0
votes
2answers
98 views

I must teach someone how a dSLR works at work. Where can I find an animation for this? [closed]

I must teach someone how a dSLR works at work. So YouTube, Vimeo and, generally, videos are banned. My 'apprentice' is smart, however I feel that he needs an animation with a 'transparent' (CGI) dSLR ...
0
votes
3answers
112 views

ANDCamera problem: brightness malfunctioning [duplicate]

I am a newbie photographer and had a question that has been plaguing me for some time now. My NIKON D3100 camera's brightness meter (the lines that change on manual mode when one adjusts shutter ...
1
vote
0answers
44 views

What are the limitations which stop Canon/Nikon producing F1.8 Zoom lenses? [duplicate]

Why is it that Canon/Nikon/Sony etc aren't able to, or dont (because of cost) produce F1.8 capable zoom lenses? Or do they?
3
votes
1answer
86 views

Change aperture of EF lenses without an EOS body

I'm looking to adapt my Canon EF mount lenses for other mirrorless mounts. Not all of them are made by Canon (some are Sigma lenses). I'm not really interested in keeping autofocus; a mere spacer as ...
0
votes
0answers
20 views

Settings for getting the actual color of a garment in clothes photography [duplicate]

I am shooting clothing laying on the floor on a white background. 2 softboxes of 350W each light the garment. The rest is my Nikon D40 with a 18-105mm lens. However the color of the garment is not ...
0
votes
6answers
187 views

Is the wide aperture and bokeh of a 50mm prime more important than getting to the 70-90mm range for portraits?

I've a Pentax K-30 with the following lens: Pentax-M 50mm 1.7 manual focus Tamron 17-50mm 2.8 autofocus Pentax 55-300mm 4-5.6 autofocus Considering that : Pentax 50mm has the nicest bokeh and ...
1
vote
1answer
54 views

Mathematical relation between aperture and DOF [duplicate]

I know that aperture and DOF are inversely proportional. But, can anybody explain to me the Physics/Optics behind that? What's the mathematical relation that relates aperture with DOF?
0
votes
0answers
24 views

What does it mean to be out of focus [duplicate]

I have browsed dozens of photography and noticed that only a handful actually try to reconcile the photography world with the real world. My ultimate goal is to be able to easily explain to anyone, of ...
1
vote
2answers
155 views

Why can't I change Aperture? Canon 60D

I am in manual mode (M on the top left scroll wheel above the on button) using a sigma 10-20mm F4-5.6 and then I spin the scroll wheel (which has a "set" button in the middle) below the 'q' button, ...
0
votes
5answers
257 views

How was this photo taken

My question is how was this picture taken. And I've got a few assumptions I made regarding the photo, please correct me when I am wrong. Low aperture value, like 1.4-2.0 Quite high shutter speed, my ...
1
vote
1answer
363 views

How to manually select aperture and shutter speed but have auto ISO on a Canon 7D?

I want to be able to manually adjust aperture and shutter speed, but leave ISO being set automatically. How can I do this on my Canon 7D?
6
votes
2answers
151 views

How does sensor size affect the brightness of an image given the same field of view and aperture?

Lets say we have two image sensors, each one with 1MPixel resolution but differing in size. The first sensor has the size 1/3", the other one 1". Each sensor is equipped with a suitable lens (for the ...
1
vote
2answers
6k views

Canon 50mm f/1.8 STM vs Canon 50mm f/1.8 II?

What are difference between canon 50 mm f/1.8 STM vs canon 50 mm f/1.8 II ? which is better to buy?
1
vote
1answer
116 views

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 ...
0
votes
1answer
3k 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 ...
6
votes
1answer
227 views

What prevents a f/1.8, 24 mm - 70 mm or similar range zoom lens from being made? [duplicate]

I see that it is common to have professional grade lenses such as 24-70mm lenses made at f/2.8. After using a 50mm/1.8, I was wondering what would prevent a more versatile zoom lens to be made that ...
0
votes
1answer
100 views

Getting a sharp focus on a 50mm when the subject is at 5m - 10m [duplicate]

I'm a novice photographer with a 450D/XSi. I'm using a 50mm/1.8 prime lens to start out and I noticed that a lot of times my pictures end up not being sharp for stationary scenes. I was mostly using ...
3
votes
1answer
100 views

Why is the sharpness of a lens often determined by aperture?

Related to: How do you find out the "sweet spot" of a lens? I am wondering why most lenses resolve finer detail when stopped down a bit. Further, after the "sweet spot", after stopping ...
0
votes
1answer
82 views

Nikon D3 - Cycling of aperture values

I have a rather trusty Nikon D3, we've been through 180k actuations together. But I have a question, which i'm really hoping i've not been missing all these years. Is there a way to program the body ...
7
votes
1answer
144 views

What's the point of a shutter when the sensor is clearly working all the time to provide live view?

Something I don't understand about compact digital cameras is how their shutters work. On the screen at the back of the camera, a preview is constantly shown. I assume this preview is made by light ...
0
votes
1answer
91 views

I want to know about the relationship between focal length and aperture [duplicate]

I have Nikon D7000 and I know the basic relation of shutter speed, aperture, and iso. All I want to know is focal length and aperture relation. As I zoom in the camera the f/stop increases (e.g. it ...
0
votes
0answers
67 views

Anyone know how to save a Photoshop file, naming it from metadata or exifdata?

Thanks for any feedback in advance. I have an action that retrieves an image from Aperture, manipulates it, saves it back to the Aperture library in tiff format, then performs a save for web with an ...
0
votes
1answer
838 views

Will the Sony FDR-AX100 really be better in low light than the Sony FDR-AX33, even though the latter has a faster lens?

I see that Sony FDR-AX100's lens has opens at f/2.8 while Sony FDR-AX33's lens opens at f/1.8 I am often doing photos (Canon 6D) or videos in places where a f/1.8 lens would be a great advantage over ...
3
votes
6answers
1k views

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? ...