Shadowy Daisy

Shadowy Daisy
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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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4
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8answers
2k views

How to take a tunnel photo with a model inside the tunnel?

I recently bought Nikon D7200. A good camera. But I feel a great challenge while taking a photo of a model standing in the middle of the tunnel. The tunnel is short and outside the tunnel is a ...
0
votes
1answer
59 views

Does focal length affect coordinate estimation?

I am using a webcam mounted on the ceiling to track some markers. I measured the area on the ground that the webcam is able to see, it is roughly 2.61m x 1.46m. The output of the coordinates right in ...
2
votes
1answer
98 views

Why do zooms have small apertures even around 50mm?

A 50mm f/1.8 prime from one of the major manufacturers can easily be found for $200 or less, but zooms that include 50mm in their range always seem to have much smaller apertures even at 50mm until ...
0
votes
2answers
85 views

How do I correctly convert from aperture diameter into f-stops?

I'd like to know whether it's possible to convert the radius of the focal point into f-stops properly. The following equation illustrates that the diameter is dependent on the f-stop: aperture ...
-6
votes
1answer
56 views

Widest f1.8 canon full frame lens?

What is the widest lens offered for canon (by any manufacturer) that has an aperture of 1.8 or lower?
1
vote
2answers
77 views

When stopped down, does light still pass through all of a glass element behind the aperture blades

When you stop down and look through the lens, the iris (circle of light) gets smaller. Does this mean that light only passes through the middle of each lens element behind the aperture blades? What ...
2
votes
1answer
112 views

Why do DPReview's charts show the G7X II as having an aperture around f/8?

I have a Canon G7X II camera, which has a 24-100mm f/1.8-2.8 lens. Why does DPReview's chart show it having an aperture of around f/8 at a focal length of 100mm?
0
votes
1answer
58 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?
0
votes
0answers
42 views

Why do I get the “Press Shutter Release Button Again” error when my D3200 isn't set to max. aperture?

I know there are quite a few posts out there about the famous "Press Shutter Release Button Again" error. But mine seems to be quite weird. I own a Nikon D3200 with the standard 18-55 mm lens. It ...
1
vote
3answers
84 views

tokina at-x pro 100mm f/2.8 macro for Nikon - aperture automatically changes while in manual mode

The max aperture on my Tokina 100mm at-x pro is f/2.8 but when I focus on anything closer than around 9 feet, the aperture automatically starts to close down and get progressively smaller (higher f-...
0
votes
4answers
94 views

Aperture iris in front of lenses (in object space)

This question discusses the iris placed in camera body and this question does not reveal too much details about external iris. I recall from scattered information that I have read that iris placed in ...
0
votes
1answer
64 views

How can I maximizing dynamic range without postprocessing?

How can I maximize the amount of detail captured in both dark and light objects in the same photo? I don't have the option of post-processing, so "traditional" HDR is not possible. If I reduce ...
0
votes
3answers
92 views

What all techniques and best practices I should use or improve for these photos? [closed]

I am beginner in photography. These two photos are taken in manual mode and I feel it's perfect shot. Please have a look and let me what all things I should improve and what I shouldn't consider. ...
1
vote
1answer
88 views

Finding the real settings of my camera

I installed the CHDK firmware on my camera. One of the options it has is to show the "true" ISO that any given displayed ISO represents (eg. display ISO 80 is really ISO 45). This got me wondering: ...
0
votes
2answers
120 views

zoom or aperture which one decreases DoF?

When I want to decrease my DoF and have Bokeh in my photos, I always stuck between choosing either opening the aperture or zooming. Should I start zooming or should I decrease the aperture? Edit: I'...
0
votes
2answers
158 views

Does F number stay the same between 35mm and Medium Format?

Rented a medium format camera to see "what is this medium format look" everyone talks about! and evaluate if it is awesome enough to start saving money for it or not. So my own camera is a Nikon D-...
0
votes
1answer
245 views

Why can't I set the aperture on my Nikon D7200?

I have just recently bought the Nikon D7200 and am having trouble using aperture priority mode. I have been doing exactly what the manual says - I switch the mode to A but when I turn the dial on the ...
19
votes
5answers
2k views

What are the practical advantages of fast lenses when shooting landscapes?

I'm still using my 18-105 kit lens on my Nikon D5300, and the (lower) quality of the photo on edges is bothering me, so I want to get some lens that produces good quality through the whole photo. ...
0
votes
4answers
207 views

Why doesn't the f-stop on my D7100 change when I hold +/- and change the dial in manual mode?

On my Nikon D7100, the f/stop will not go down from 14 when I hold down the +/- button and turn dial. All I get is a little number below but the photos do not change exposure when I change this number....
-3
votes
2answers
223 views

Reverse Engineer this processing in lightroom

Wondering if anyone can put a quick eye on these photos below and share what develop edits in Adobe Lightroom they think could help create a similar style in other photos. These were taken by ...
1
vote
2answers
149 views

Why my dslr takes more time to process pictures shot at high apertures?

Using the same setting, my 600d takes about 10 secs from flash to preview picture if I shoot with a high aperture of f/22. But if I shoot with the same settings at f/3.5, I can see the picture preview ...
9
votes
2answers
1k views

Landscapes: why *narrow* aperture?

In an earlier question, several people suggested that for landscape photography, you want a small aperture, “to maximise the depth of field”. I'm not sure I understand that… Surely if you're ...
0
votes
3answers
173 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 ...
3
votes
2answers
539 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 ...
1
vote
1answer
78 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
439 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
95 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
505 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
105 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
521 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
129 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
97 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
119 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
144 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
224 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
79 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 floor/...
2
votes
4answers
771 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 morning....
0
votes
1answer
64 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
298 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
84 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
266 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
241 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
124 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
137 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
187 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
3k 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
101 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 ...