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1
vote
2answers
113 views

is a camera sensor size cropped according to the change in pixel aspect ratio of a resolution?

As an example, canon 6d full frame has the highest resolution of 5472 x 3648 with a pixel aspect ratio of 3:2 . As this is the highest I assume this is utilising the full size of the sensor. If the ...
3
votes
5answers
781 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 ...
2
votes
2answers
254 views

How does sensor size relate to image resolution?

How is it possible that with a particular sized sensor (say APS-C) it is possible to get different sized image cameras (by this I mean a 10 megapixel camera, a 15 megapixel camera etc)? Where does ...
5
votes
3answers
2k views

Image quality when using the same lens on 16Mpix vs 24Mpix

I'm considering buying a new camera and my two candidates are Nikon D7000 and Nikon D7100. I heard that 24Mpix sensor needs very good lens to produce sharp images. Considering that I currently have ...
4
votes
3answers
323 views

Shooting images smaller than the sensor size

I have a d600 and I appreciate very much the high resolution I get (useful especially for landscapes), but for most other subjects I find 6000 x 4000 to be overkill, making post-processing ...
9
votes
3answers
2k views

Does change of lens affect a camera's megapixels?

I have a Nikon D40. It has only 6.1 MP. I am planning to buy additional lens for it. Can changing the lens of the camera increase or decrease the megapixels of the camera?
11
votes
5answers
2k views

How does taking lower-resolution pictures with a higher-resolution sensor affect image quality?

Does taking a picture with 8 megapixel resolution with my Canon IXUS with a 1/2.3" sensor and 12M max resolution provides the same or worse image quality (particular, noise) as if the picture was ...
9
votes
1answer
903 views

Can the slant edge SFR method measure lens resolution greater than the Nyquist limit for the camera sensor?

The slant edge SFR method has become the standard for measuring resolution of lenses and camera systems. It works by scanning a five degree slanted edge to calculate a line spread function. This is ...
15
votes
3answers
5k views

What is the Nyquist Limit and what is its significance to photographers?

The Nyquist Limit is frequently mentioned in the context of lens and sensor resolution. What is it and what is its significance to photographers? Here is an example of it being used by DPReview.com ...