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4
votes
6answers
549 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 ...
4
votes
1answer
116 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 ...
7
votes
5answers
327 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, ...
5
votes
1answer
185 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 ...
7
votes
5answers
429 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?
4
votes
4answers
230 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 ...
-2
votes
2answers
234 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 ...
2
votes
0answers
65 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 ...
4
votes
4answers
257 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 ...
3
votes
5answers
270 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.
15
votes
3answers
327 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 ...
5
votes
3answers
313 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 ...
10
votes
4answers
369 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 ...
6
votes
5answers
486 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 ...
11
votes
3answers
931 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 ...
1
vote
2answers
142 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 ...
6
votes
3answers
1k 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 ...
13
votes
3answers
1k 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 ...
7
votes
7answers
969 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 ...
17
votes
4answers
8k 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 ...