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Pertaining to the physical and functional. design of camera bodies.

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27
votes
3answers
1k views

Why don't they make all DSLRs with an electronic shutter?

Why don't they make all DSLRs with an electronic shutter? Is it technically possible? Surely this would allow easier syncing with flashes (rather than the usual 1/200s or 1/250s max). I could even ...
17
votes
4answers
13k views

What are shutter actuations?

I was just reading the question How many actuations are "too many actuations"? and trying to figure out what a shutter "actuation" actually is. The only thing I can guess is that it's the number of ...
17
votes
3answers
913 views

Why don't cameras have autofocus points in the edges and corners?

On all the DSLRs I've used, there are never any autofocus points near the edges and corners. Why is that?
16
votes
3answers
402 views

Why is there not a protective glass element that is between the lens and shutter in a SLR?

With the danger of dust on all SLR cameras, it only seems logical that adding a simple glass element that went between the lens and shutter (mounted on the camera) would both protect the camera's ...
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 ...
13
votes
1answer
704 views

What does the pentaprism/pentamirror do?

In an SLR, the light bouncing off the mirror goes through a pentamirror or pentaprism before being reflected to the viewfinder. However, it seems to me that it would be possible to project an image to ...
13
votes
3answers
1k views

Why is there a mechanical shutter in a digital camera?

I understand that in a camera the diameter of shutter opening — the aperture — controls how much light comes in, and this affects the resulting exposure. But I don't understand why, in a digital ...
11
votes
1answer
496 views

What is a magnesium alloy shell?

I have a Canon DSLR with a magnesium alloy shell. What does this mean, what are the other metals that make it an alloy, and why was magnesium used and not aluminium and steel?
10
votes
3answers
2k views

What makes a camera 'weather sealed'?

What is the structural and mechanical differences between a weather sealed body and a non weather sealed body? Is weather sealing still effective if the lens isn't weather sealed?
10
votes
4answers
422 views

Does the convergence of video and photo technology in digital cameras have a negative impact on strictly photographic ability?

With every new Canon and Nikon camera we are witnessing the progression of an unprecedented convergence of video and photography ability, something completely unthinkable during the film era. But I ...
8
votes
7answers
1k views

Why has no one invented a 4:5 aspect ratio APS-C/35mm-sized DSLR?

People keep inventing different form factors and formats for cameras, but none seems to have hit on what seems (to me) like an obvious one. Why doesn't somebody build a camera with a sensor that has a ...
8
votes
6answers
463 views

Why is the main sensor not used instead of the separate AF sensor to focus a DSLR?

From this answer I understand that the reflex mirror of a DSLR is actually not reflecting all the light, but it passes a certain amount on to the AF sensor. So if the reflex mirror can pass light, ...
7
votes
5answers
598 views

Why not have the diaphragm in camera body instead of the lens?

Why is the diaphragm to control the amount of light entering the camera typically in the lens and not the camera body itself?
7
votes
5answers
533 views

Why is there no full-frame but low res sensor?

So I just watched a review on the Sony NEX-7, which is 24MP in APS-C size.... I am a Canon user and I immediately think about the announced Canon Powershot G1X with almost APS-C sensor but at a lower ...
6
votes
3answers
2k views

What are the consequences of making camera bodies black?

Considering that silver and other camera colors are outsiders, I wonder if there is a specific reason to make black camera bodies. I can think of several "marketing" reasons (discretion, first, or ...
6
votes
1answer
368 views

Where is the AF sensor located in a DSLR?

As I understand every DSLR has a separate, smaller sensor that handles phase detection focusing. Where is it located? If this location is different for every DSLR, and therefore this broad question ...
6
votes
1answer
182 views

What is the difference in purpose between a focal plane shutter and a leaf shutter on a camera?

I inherited my Grandfather's beautiful Graflex Crown Graphic which he used for his entire career as a portrait photographer. (It's the picture on my avatar if you want to see it.) Doing research on ...
6
votes
1answer
172 views

What characteristics make a digital sensor good?

Generally, the technical image quality of a digital image (before we get to the post-processing stage) is the product of the characteristics of the lens and the recording medium, with an important ...
5
votes
6answers
824 views

Have cropped digital sensors reached their peak design limits?

APS-C and smaller sensors seem to have plateaued off in terms of their megapixel counts, possibly due to diffraction limits. The ISO performance of these sensors has not increased substantially in the ...
5
votes
4answers
282 views

Why the need for SLR in digital cameras?

Excuse my ignorance but as far as I know, SLR was invented in order to get the photographer to see (through the viewfinder) exactly what image will fall on to the film. In digital cameras the image ...
5
votes
3answers
479 views

What's the difference between vertical and horizontal shutters?

I've always thought that shutters were composed of two vertical curtains that moved along the sensor in order to expose it (at least for most DSLRs). Recently I've bought a Pentax K1000 that ...
4
votes
4answers
246 views

How small can current SLRs get and still give comparable photo quality?

Let's take the full-frame Canon 5D as example. How small can this camera be and still give comparable picture quality? What are the design constraints? Besides the sensor, the body, can the lenses ...
3
votes
5answers
323 views

Do all cameras with autofocus need motors?

Do all autofocus cameras need motors to drive the lens? I would have thought today's modern electronics rendered motors obsolete.
3
votes
0answers
90 views

Where can I find viewfinder adaptions for the Fujifilm HS series?

For model series S/HS, in particular HS25, HS30, ... That Fujifilm's viewfinder seems designed (misdesigned) only for persons with very wide set eyes (or with very non-prominent noses and nose ...
2
votes
4answers
140 views

What is the benefit of a vari-angle LCD monitor on a camera?

Nikon D5100 (which I am thinking to buy) has a vari-angle LCD monitor. What benefit does it add? Can you take your own self-portrait snaps like this? Is it practical or is it a non-cashable ...
2
votes
2answers
142 views

Why there is no full-frame lenses with leaf shutter?

I see that many medium format lenses are made with leaf shutter, which allow much faster flash syncing speeds, so why no one puts them in FF lenses then?
1
vote
2answers
160 views

What are all the options or features a DSLR camera body can have?

I was curious to know if there was a place that lists all the options that are possible on a DSLR camera or even which cameras have them? for example: Video recording, Night vision, The speed in ...
1
vote
1answer
67 views

Does the position of the flash in compact cameras make a real difference in reducing red eye?

I am interested whether the position of the flash at the three examples of point and shoot cameras below would avoid or at least decrease the red eye effect. Or do you feel that all flashes are still ...
-1
votes
4answers
183 views

Why aren't devices with two cameras more popular?

I mean a device that has two sensor / lens combinations. I can see several advantages: Capturing photos with a higher dynamic range. Focus bracketing. Capturing multiple photos and merging them to ...
-2
votes
2answers
351 views

What is the bill of materials for a typical single lens reflex (or mirror-less) camera? [closed]

How does the bill of materials for a camera contribute to the actual cost and/or price of the camera and how do the hidden costs in developing, manufacturing, and marketing a camera to the public ...
-6
votes
5answers
333 views

How can I get the top people of a camera brand to listen to a design idea I have? [closed]

I'm trying to make your next new top-end camera work much better. I need help doing so. I'm seeking to contact someone as high up the command chain as possible in the Sony electronics /camera ...