Linked Questions

49
votes
3answers
8k views

What image-quality characteristics make a lens good or bad?

When reading lens reviews on the Internet, I often find subjective statements about the image quality that a lens produces, such as "good contrast" or "sharp". The problem is that I don't think I am ...
14
votes
5answers
1k views

Why are only certain shutter speeds or apertures available?

For the exposure control function DSLRs there are specific shutter speeds available. For example there are 1/4, 1/100, 1/500. Why, even in high end DSLRs, is there no option to use a custom shutter ...
15
votes
3answers
7k views

What causes lens flare?

I heard a couple of years ago that only certain types of lens caused flare to appear, something related with the material and/or quality of the lens. Is this true? Which material/quality caused flare? ...
15
votes
4answers
6k views

What kind of dose can you expect from a radioactive lens?

I read that lens makers used to use radioactive glass to increase the refractive index property of their lenses. How radioactive are they? Here are some example dosages; where would looking through ...
9
votes
4answers
2k views

Is it the same if you take a picture by setting 50mm in a 18-55mm lens and by using a 50mm prime lens?

Is it the same if you take a picture setting 50mm with a 18-55mm lens and a 50mm f/1.8 prime lens? Assuming that ISO, aperture, and shutter speed are the same, will both the lens give same results? I ...
21
votes
2answers
1k views

What are the basic workings of the Lytro light-field camera?

lytro.com describes their new light field camera as being able to capture the entire light field, rather than just one plane of light, thereby allowing for a whole new set of post-processing ...
6
votes
5answers
3k views

What about lens construction influences bokeh?

I can understand how certain elements of a lens can correct an aberrations or make it sharper - but specifically, how do lens manufacturers influence the bokeh - the quality of the blur? There's a ...
5
votes
6answers
3k views

Can I use old filters from SLR film cameras on newer DSLR cameras?

I have access to a vast collection of old filters from 20-30 years ago (for Canon cameras if it makes any difference). Can I use them on new DSLR cameras? I have searched a lot to find an answer for ...
7
votes
2answers
2k views

Why does Zeiss manufacture only manual focus lenses?

I've heard that Zeiss's quality is very good/great but I'm also curious if it has anything to do with the "manual focus only". I have read this question but it only partly addresses my question. Is ...
7
votes
2answers
947 views

Does lens age affect color produced?

I came into some discussion with my friend, and my friend said that age may affect the color produced by the lens, i.e., a newer lens produce better color than an old lens (of the same model). Is this ...
1
vote
3answers
174 views

Canon EF 200mm f/2.8L II USM or Canon EF-S 18-200mm f/3.5-5.6 IS?

I need a recommendation. I want to buy a telephoto lens and I don't know a lot about photography. I am looking at these 2 options: Canon EF 200mm f/2.8L II USM: Fixed lens. Fast (f/2.8). Effective ...
2
votes
2answers
252 views

Is lens geometric distortion, chromatic aberration and light fall off still as much of an issue? [duplicate]

I saw an earlier question (Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?) that mentioned lower quality lenses have distortion, aberration and light fall off issues. Has software like Adobe ...