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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2
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8answers
342 views

Is deep depth of field AND bright exposure possible?

I know that a larger aperture corresponds to a brighter exposure and shallower depth of field for a given focal length. Is it optically possible for a custom-built camera to form an image with both a ...
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0answers
45 views

Why does an iPhone need software for Portrait Mode? [duplicate]

I have an iPhone X, with a camera specs of: Wide-angle: ƒ/1.8 aperture Telephoto: ƒ/2.4 aperture Why does the phone need software to produce Portrait Mode image (image with background blur / bokeh)? ...
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1answer
139 views

New but old Canon 20 - 35mm f3.5 - 4.5 will no longer stop down to f 3.5

Need some info/help please. I have a 6dmk2. I bought a brand New/Old Canon 20 - 35mm f3.5 - 4.5 Love this lens, inexpensive, light and exactly what for my needs. PROBLEM: it will no longer stop down ...
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3answers
178 views

focal length to aperture relation while zooming - is my russian lens lying to me?

I have this old soviet/russian "Granit" 80-200mm lens, connected to my Canon 550d DSLR through M42 adapter. I also have "modern" kit 18-55mm lens. What I don't get is how aperture ...
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1answer
54 views

How do you know how much of an effect on the image will be when using a strangely shaped aperture like star-shaped or heart shaped?

Compared to regular pentagonal aperture, what effect does the image have if you use the aperture of the shape below? The above aperture has a pentagonal shape and has a protruding part to the side. ...
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3answers
290 views

Using FF lens on APS-C changes lens aperture value?

Someone told me that hen using Full frame lens on APS-C camera (1.5x crop factor) in addition to multiplying focal length by crop factor (e.g. 35mm * 1.5 = 52mm actual focal length on APS-C) you also ...
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4answers
1k views

What causes images to have flat depth?

I am learning about photography and I remember reading about an effect that causes images to look like there is no depth but now I cannot find what it is called or what causes it. I remember an ...
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2answers
238 views

Why does my lens aperture stop working a few hours after attaching the lens?

I recently purchased a used Sigma 105mm f2.8 DG OS Macro lens, and when I tested it during the purchase everything worked fine. A few hours later when I tried it again, I noticed that my pictures were ...
0
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1answer
219 views

Any modern camera that has a visual aperture indicator?

On the back of the Nikon D3200 seen in the picture we can see a graphical representation of the selected aperture. Are any modern cameras able to show that in some mode?
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4answers
305 views

Can aperture be changed in aperture mode even with a fixed aperture lens?

I am new to non auto mode. If I have a fixed aperture lens with f 2.8 16 to 35 mm. Does this mean I cannot change the aperture to f4 or f5 on my camera because the lens only supports f2.8? Is the f2.8 ...
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2answers
379 views

Is using a low F-number (wide aperture) for landscape photography a good practice?

I recently asked a question (How to increase the quality of photos taken through a DSLR?) on how to increase the sharpness of my images. One of the answers proposed that even though it is known that ...
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1answer
156 views

Why is it not possible to change Aperture in Livewiev on a Nikon D5300 when using manual movie settings?

I've been using my Nikon D5300 for about 1.5 years and have recently started to use it for some video work aswell. I realized that when manual movie settings are turned on and you go to Liveview, you ...
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2answers
132 views

Canon 70D - shooting video interviews in bright conditions with low aperture

I'm trying to shoot an interview in the middle of the, in the outdoors - which means, it's very bright. While keeping the aperture low - to keep the interviewee's face in focus, with narrow depth of ...
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1answer
103 views

Is the noise coming from fast aperture ring adjustments of Sigma 100-400m lens on Sony A6500 expected?

I recently got a Sigma 100-400mm for my Sony A6500 and love it so far. But I noticed that the aperture ring makes noticeable noise on power ON and power OFF. See Google Photos album of two videos ...
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1answer
337 views

I can't change shutter speed

I recently got a Nikon D3100. But I have a problem now: I can't change shutter speed or aperture in any mode. I am stuck at 1/4 and when I try to wheel it shows me 1/3 for a second and then switches ...
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2answers
650 views

What is the bokeh difference between 1/2.3“ f/0.95 cell phone and 1” f/1.8 compact camera?

I am thinking of buying a Sony RX100 (mark i). The thing is, I am gonna use it for pet, flower photography, and I really like the f/0.95 lens on my cell phone camera. It produces creamy bokeh with 1/...
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3answers
270 views

Why 1 sunbeam for each aperture blade in your lens? [duplicate]

I don't understand the embolded phrase below. I'm unschooled at physics and photography. Starburst and Sunstar Effects Starbursts, also called sunstars, are beautiful elements that you’ll find in ...
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4answers
1k views

Why does high brightness affect white balance correction?

I am starting to shoot with a Nikon D5200. Today, the light is bright and diffuse because of clouds. In M mode with f at 5.6, I set the white balance preset as per the manual, and often get an error &...
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3answers
368 views

Why do we use smaller apertures, such as f8, for landscape photography?

In photography, it seems universally agreed that you should shoot at f8 to f11—basically an aperture before light diffraction comes into play. I've been quite confused about this for a while. Let's ...
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2answers
154 views

Would a Canon EF 800 f/5.6 with a 2x extender on a Raspberry Pi camera work? (9024mm focal length, f/90.24)

The new raspberry pi high quality camera has a sensor size of 1/2.3", with a C-mount. If I attach a C-mount to Canon EF lens adapter, then a 2x extender, then the Canon EF 800mm f/5.6 L IS USM, from ...
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5answers
489 views

EOS 250D the aperture changing only when picture is taken

I have yongnuo 50mm f1.8 lens In Av Mode When I m changing the fstop the diaphragm blades remains fully open and depth of field doesn't change I have looked to user Guide and find that I can assign ...
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3answers
381 views

How can I control the aperture of a Nikon G lens when using extension tubes? [duplicate]

Due to corona lockdown, I'd like to try macro photography. I have two lenses (18–55 and 35 f/1.8) and a Nikon D5300. As I currently do not have the money to buy a real macro lens, I found 3 cheaper ...
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2answers
172 views

What are high f-stops (larger than f/5.6) good for when using compact camera?

I carry the Sony RX100M3 with me and usually shoot aperture mode (generally around f/5.6 for deep dof). I notice that my camera allows for very high f-stops up to a maximum of f/11. If I calculate the ...
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2answers
568 views

What's the difference between aperture value and f-number?

In macOS Finder it says a photo taken at f/2.8 has an aperture value of 3. What is an aperture value, and how is it different from f-stop?
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2answers
114 views

How to fix diaphram of Nikon 14-24mm f/2.8 G?

Somehow one of the nine blades in the aperture of my Nikon 14-24mm f/2.8G has come fully loose and can be seen laying turned sideways when I look through the lens. I don’t want to pay to repair it, ...
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2answers
108 views

Optimal settings for video capture in front of large digital whiteboard

I have a youtube channel and create a lot of technical videos in front of a large Dell monitor which I use as a whiteboard. I used to use my iPhone but switched to Nikon Z50 with a shotgun microphone ...
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1answer
123 views

How can we calculate effective megapixel loss due to diffraction?

How can we calculate an image's effective megapixel count at each aperture setting, specifically as loss relates to diffraction? Assume that we already know the sensor size, its true megapixel count, ...
4
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2answers
456 views

Does aperture really matter if the subject distance is large?

I have calculated the depth of field for my Sony RX100M3. I have done so numerous times for all three parameters: focal length, subject distance and apperture. I noticed that for sufficiently large ...
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2answers
90 views

Time difference between Auto Mode and Other modes

I'm a super newbie to photography. I would like some clarification on the following: I am shooting an image in Auto mode. There is no shutter lag at all and the picture looks good. The settings are: ...
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4answers
2k views

Do you get more bokeh on a APSC sensor with a full frame 50mm f/1.8 lens or a APSC 30mm f/1.4?

I am trying to compose a detail shot where I want to get as much background blur as possible. I am using Sony a6500 camera (APSC 1.5x crop factor body). I am considering two lenses: Sigma 30mm f/1.4 (...
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1answer
315 views

Why does aperture change when I zoom my lens even in manual mode? [duplicate]

I have my Nikon D7500 set to Manual Mode. I can change the shutter speed and it maintains the setting. When I change the aperture, the setting is not maintained and varies depending on the zoom of ...
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3answers
405 views

Is it better to shoot at diffraction limited aperture or sharpest lens aperture?

In the old cameras like Nikon D80 with 10 Megapixel pixel count. The diffraction limited aperture is F/13 but its known that lenses are generally sharpest at the F/8 so it's a no brainer to shoot at F/...
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2answers
96 views

Aperture and the understanding of how it works [duplicate]

So over black friday I bought this bundle, which is the Nikon D3500 two kit lenses. I was wondering, I keep hearing people talk about aperture and using F11-F16 but on those lenses that I have, all I ...
4
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5answers
991 views

Is it best to use a wide aperture when I'm focusing at infinity and depth of field is not a concern?

If I shoot at f1.4, I can easily separate my subject from background due to the shallow DoF. In the case where I turn the focus to infinity at f1.4, I will have everything in focus, except the ...
18
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5answers
3k views

What are the benefits of the classic f-number scheme?

Classic ƒ numbers are entrance pupil diameter as a fraction of focal length. This seems like a slightly strange choice as exposure is proportional to area rather than diameter. Naively I would think ...
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1answer
75 views

Why does changing aperture change field of view in my reverse-lens macro setup?

I have a reverse lens macro setup, with a reversed 35 mm lens attached through an adapter to a 80-200 zoom lens. I have the following issue: changing the aperture setting on the zoom lens changes the ...
2
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1answer
173 views

What aperture is selected when I use a Nikon N2000 with a G lens?

I started using a Nikon N2000 and I inserted a Nikkor 50mm 1:1.8G (https://www.adorama.com/images/Large/nk5018gu.jpg) Since there is not any setting of the aperture (which may be from f1.8 to f.16), ...
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2answers
1k views

Why doesn't the aperture change on a Nikon AF 50mm ƒ/1.8D lens? [duplicate]

I am facing problem with a Nikon AF 50mm ƒ/1.8 lens which is attached to a Nikon D7100. Although I can change the aperture from the camera (in M mode) it seems that it is not changing in photos. What ...
2
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1answer
397 views

Canon 50mm f/1.8 lens won't go down to f/1.8

Bought a 1.8 lens. Today on manual I realised it won't go down to f/1.8, the lowest is f/2.8, but on other modes it does. The camera is a Canon 5Ds. p.s - just moved to canon so is there a setting ...
2
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2answers
273 views

Is diffraction limited aperture independent of lens?

I have always understood diffraction limited aperture as a property of the camera and its sensor, not of the lens. The camera has a certain sensor size and a certain megapixel count, which together ...
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3answers
307 views

How to avoid noise in Aperture Priority mode arising due to auto-ISO?

I was taking photos of birds in a cloudy day and in an area of forest where light was even low under a tree as compared to other areas. I used 70-300 mm kit lens. When trying to take photo even at 1/...
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3answers
1k views

Why does the lower f-stop in my camera makes the photo darker?

I have a nikon d5100 camera with 35mm/f 1.8 lens. I'm not sure what's going wrong with my camera but my photo with larger f-stop numbers is brighter than the photo with smaller f-stop numbers (the ISO ...
0
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3answers
105 views

Do aperture blades move between each shot in burst mode?

Most professional cameras have a burst mode function. Furthermore, if the camera is SLR, the optical viewfinder shows what happens between the images in the burst, but when an image is taken, there is ...
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7answers
3k views

Is there any reason to change the ISO manually?

Here's my understanding so far. When taking a photo with a digital camera, there are some tradeoffs: Aperture size: bigger aperture lets in more light, smaller aperture means less blurring in space. ...
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0answers
83 views

What are the ISO, exposure, and aperture settings for single frames from slow-motion video on the iPhone 6?

I filmed a video of myself swinging a tennis racket in slow motion and then used cv2 to make jpg's of some of the frames, ie. 8 frames from the start of the swing to follow-through evenly spaced, and ...
2
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2answers
8k views

Changing the camera ISO , Aperture, Shutter Speed with Android

I have a smartphone with Android 8.0. I need control over : ISO Aperture Shutter speed Could you please suggest the way to go forward? I do not know how to change any of them? I am using an ...
0
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3answers
166 views

Does a camera have to have a contiguous housing?

The lens group in this picture would have its own protective lens tubes like the one on a camera but one for each lens group. What would be an issue having a gap between the lens group and stray light ...
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1answer
214 views

Can a camera be a mile long?

Could parts of a camera be spaced out over a distance rather then together to work in a way a normal camera cannot? What characteristics would this camera have over a normal camera? In the picture ...
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2answers
210 views

Determine the effective aperture size by f-stop/sensor size/focal length/Size of CoC [duplicate]

Is it possible to calculate the effective aperture size by the parameters below? f-stop sensor size focal length of lens size of circle of confusion If yes, what is the equation? If no, what are ...
1
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1answer
112 views

Is there an online lens diffraction and maximum sharpness table?

I simply want to see an table that lists the lens diffraction limit of each camera. I have came across this well done answer with animated PNG and I realized there i also the perfect sharpness ...

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