Summer Start

by VonSchnauzer

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3
votes
5answers
723 views

What is Snapsort's true resolution?

On Snapsort I found this explanation: True resolution Manufacturers advertise high megapixels to sell their cameras, Snapsort calculates the true resolution of each camera based on the ...
4
votes
2answers
422 views

What is this dead pixel problem really called?

On all photos from my last vacation I see this red point. It appears on in-camera JPGs as well as on RAW files. A see a red pixel in the same position on all pictures. How is this problem called? Is ...
12
votes
4answers
882 views

Why is sensor sensitivity called “ISO”?

I was curious to know how the term "ISO" was coined for referring the image sensor's sensitivity. Is there any reason or circumstance that contributed for terming "ISO"? Also, does ISO has a literal ...
9
votes
2answers
3k views

Why don't comparisons of aperture take sensor size into account?

When one compares focal length, many times we use the 35mm equivalent length. A 50mm lens on an APS-C sensor camera(1.6x) would be a 80mm equiv. length on a full frame camera. But when we state the ...
2
votes
2answers
280 views

What is the meaning of “cropped sensor”?

What is the meaning of the term "cropped sensor"?
10
votes
2answers
3k views

What is “pixel density”?

Apparently megapixels aren't a good way to measure the camera quality, so some people are referring to a relative measuring system called "pixel density". What specifically is this? What information ...
40
votes
8answers
16k views

What does “expanded ISO” mean?

The ISO specification for the Canon EOS 7D reads as follows: High ISO For handheld shooting in low light, the EOS 7D offers ISO speeds of up to 6400. Expandable to ISO 12800, for low light ...