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A viewfinder is what the photographer looks through to compose, and in many cases to focus, the picture. Most viewfinders are separate, and suffer parallax, while the single-lens reflex camera lets the viewfinder use the main optical system.

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20
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3answers
4k views

How do I calibrate the diopter correction on my DSLR's viewfinder?

The viewfinder on my camera has diopter correction, but is there a "correct" way to set it up? In the past I've just allowed the camera to auto-focus on a distant point, and then make sure that is as ...
34
votes
2answers
15k views

What is the difference between a pentaprism and a pentamirror?

Higher-end SLR cameras include a pentaprism to transmit the image from the lens to the viewfinder, whereas lower-end SLR cameras use a pentamirror to accomplish the same task. What are the ...
7
votes
4answers
1k views

What are the technical differences between using a DSLR viewfinder and live view?

The earlier question What are the advantages of using the optical viewfinder over live preview to take photos on a DSLR? asks for practical advantages of optical viewfinders. But what's the technical ...
20
votes
1answer
935 views

Why can't I see bokeh in the viewfinder?

I took this shot a few months ago, and something has been bugging me ever since. I was a bit surprised when I saw the image and saw the conspicuous "bokeh orbs". The thing is, I hadn't noticed ...
11
votes
1answer
768 views

Disadvantages of electronic viewfinders?

What are the disadvantages of electronic viewfinders? such as the ones used in Sony SLT cameras? What is the reason that major camera manufacturers are still using the classic viewfinders while using ...
46
votes
4answers
3k views

Why aren't all viewfinders 100%?

We often see that a manufacturer's high-end (D)SLR models offer a "100% viewfinder," which shows the entire exposed frame, and allows precise composition with regard to objects near the edge of the ...
31
votes
7answers
6k views

How can I get sharp manual focus despite poor eyesight?

I suffer from astigmatism. It's only mild, though I feel it's affecting what I'm seeing when looking through the viewfinder. Frequently, after shooting a photo with my Canon EOS 7D, I'll load it into ...
13
votes
3answers
2k views

How are the red focus point indicators displayed on a dSLR's focusing screen?

The question Why do the focus points leds appear shadowed? raises another question for me. How are these indicator lights implemented in typical dSLRs? Are they actually small LEDs etched into the ...
9
votes
1answer
2k views

What does “viewfinder magnification” mean?

Viewfinders (both optical and electronic) typically come with two stats: magnification and coverage. The latter measuring how much of the actual exposed area (film or sensor) one sees. But what is ...
15
votes
4answers
2k views

What's the difference between a rangefinder and SLR?

I've seen rangefinder cameras around and idly wondered what the difference was between them and SLR cameras. Are there any advantages rangefinders offer that cannot be reproduced using an SLR?
6
votes
4answers
796 views

Should the depth of field in the viewfinder be the same as the final images with the aperture set to wide open?

When I take pictures of flowers, I often try to get the classic soft background around the in focus flower. I have a canon t3i, and a lens that goes to f/2.8. I set that to wide open, take my ...
16
votes
2answers
2k views

How do I clean the inside of my viewfinder?

My viewfinder (not LCD) has spots of dust on it. What is the best way to clean the inside? I have cleaned the outside with a QTip.
14
votes
1answer
644 views

Should I use the rubber viewfinder cover?

A rubber viewfinder cover is connected to my camera strap. What's it for, and when do I use it? What happens to a photo if I don't use it?
7
votes
1answer
373 views

Are there any alternate eyepieces for people with glasses?

Any recommendations for an alternate DK20 eyepiece for a Nikon D3200 or D5100 that gives a better visual for wearers of glasses? Amazon has many but the reviews are all over the place. My glasses keep ...
6
votes
7answers
4k views

How can I better see my LCD to check a picture in bright sunlight?

Maybe a stupid question for some, but here we go. I just recently return from sea side holidays. One of the problems that I had was checking photos "on spot" when most of the time it was sunny, with ...
5
votes
3answers
1k views

Are there advantages to using a viewfinder for focusing instead of using a camera's rear LCD screen?

Are there any particular advantages to using the viewfinder for focusing instead of the LCD?
15
votes
7answers
2k views

My viewfinder is too small — what can I do about it?

I own a 450D, and I am very satisfied with the image quality, features, and so on. The only thing that disturbs me is the viewfinder. I can barely see the whole image when looking through it (black ...
14
votes
3answers
1k views

How important is the viewfinder coverage percentage? (Figures like 95%; 100% for Canon 7D?)

I would like to know if the 100% viewfinder number mentioned in many cases to praise the Canon 7D and other similarly-priced SLRs is a really meaningful figure. How does it actually affect the ...
7
votes
3answers
583 views

How can my eye focus on the viewfinder image?

I noticed that when looking at small items in close distance, minimum focusing distance for eye seems to be about 15cm (6") - closer than that, vision promptly gets blurrier instead of seeing more ...
6
votes
1answer
4k views

Why isn't the focus indicator light showing when focused on my Canon 5D Mark III?

I've been working with two different Canon EOS 5D mark III cameras, and had the same problem with both. When auto-focusing I have two kind of indicators when the image is focused on a certain point. ...
6
votes
4answers
438 views

How does one track action with a fast telephoto prime lens?

With my normal-range prime lenses, I tend to shoot with both eyes open — what I see in the viewfinder has a high correspondence to what I see with my other eye. With my 70mm (105mm in 35mm-equivalent ...
3
votes
2answers
2k views

What are the pros and cons of a viewfinder versus a liveview?

Provided a DSLR has both i.e. a viewfinder as well as a liveview feature. Which one is more preferable for focusing and composition, and why? Is there something which can be done through a viewfinder ...
2
votes
1answer
359 views

How important is lack of color matrix metering and 100% viewfinder in Nikon F100 compared to Nikon F5?

I'm planning to buy a film camera. I'm undecided between Nikon F100 and Nikon F5. The major differences that I could figure out from Thom Hogan's review are: Pro F100: F100 is lighter than the ...
0
votes
4answers
871 views

Why does Nikon D90 makes strange sound and shifts Mirror in Viewfinded Eyepiece after Shutter-release button is pressed

Recently I have noticed that my Nikon D90 makes a strange sound and sort of shifts mirror up if you look at the viewfinder eyepiece after you release the shutter-release button. If you try to shoot ...