Mar 17, 2015, 09:25
Hi, Here are a couple of sites that may compliment what Craig has offered you
http://www.gizmag.com/camera-sensor-size-guide/26684/
The second is pretty comprehensive too... this is from one of my favourite UK sites and one I used to post images to. It gets a little technical and gets into diffraction, noise, dynamic range and you can go from there to circles of confusion and resolution
There are a few handy calculators on the page too... play with them and you will soon get the idea
http://www.cambridgeincolour.com/tutoria...r-size.htm
All the information is "out there" just the presentation, as far as comprehension is concerned, does vary enormously. The F stop is a function of the lens.... a 100mm f2.8 on a crop is still an f2.8 on a full frame ... I would always buy the fastest lenses I can afford as it make no difference to the lens what camera you put it on. What would change is the effective field of view...
Most wildlife photographers opt for a 1.6 crop sensor...(unless you work for Nat Geo and they give you a top of the range pro full frame and 600 and 800mm lenses!! ) you get away with a lighter, less powerful lens but still get the reach... e.g. a 200mmf2.8 lens on a 1.6 crop sensor will give the equivalent field of view of 320 mm. For that you may have to use a much heavier and expensive say 400mm f2.8 lens. Put then a small lightweight 1.4X converter on your 200mm and on your 1.6 crop frame camera, and you get nearly 500mm EFV! There is a downside though... (always is!) that f2.8 lens is still a 2.8, but due to the light loss through the converter, the equivalent F stop is reduced to probably no more than f 4 or even 5.6 so that restricts shooting time to bright sunlight (stark and not the best) and it may affect the ability of the AF sensor to set focus on some cameras.. or ramp up the ISO/ASA and get progressively more noise that you have to deal with in post later or you have to carry and use a tripod! Photography, my opinion, is very much a balancing act... like high wire walking... get it right and get the plaudits... get it wrong...
Enjoy and I hope it has helped
Kind regards
Rolf
http://www.gizmag.com/camera-sensor-size-guide/26684/
The second is pretty comprehensive too... this is from one of my favourite UK sites and one I used to post images to. It gets a little technical and gets into diffraction, noise, dynamic range and you can go from there to circles of confusion and resolution
There are a few handy calculators on the page too... play with them and you will soon get the ideahttp://www.cambridgeincolour.com/tutoria...r-size.htm
All the information is "out there" just the presentation, as far as comprehension is concerned, does vary enormously. The F stop is a function of the lens.... a 100mm f2.8 on a crop is still an f2.8 on a full frame ... I would always buy the fastest lenses I can afford as it make no difference to the lens what camera you put it on. What would change is the effective field of view...
Most wildlife photographers opt for a 1.6 crop sensor...(unless you work for Nat Geo and they give you a top of the range pro full frame and 600 and 800mm lenses!! ) you get away with a lighter, less powerful lens but still get the reach... e.g. a 200mmf2.8 lens on a 1.6 crop sensor will give the equivalent field of view of 320 mm. For that you may have to use a much heavier and expensive say 400mm f2.8 lens. Put then a small lightweight 1.4X converter on your 200mm and on your 1.6 crop frame camera, and you get nearly 500mm EFV! There is a downside though... (always is!) that f2.8 lens is still a 2.8, but due to the light loss through the converter, the equivalent F stop is reduced to probably no more than f 4 or even 5.6 so that restricts shooting time to bright sunlight (stark and not the best) and it may affect the ability of the AF sensor to set focus on some cameras.. or ramp up the ISO/ASA and get progressively more noise that you have to deal with in post later or you have to carry and use a tripod! Photography, my opinion, is very much a balancing act... like high wire walking... get it right and get the plaudits... get it wrong...
Enjoy and I hope it has helped
Kind regards
Rolf
In photography, the smallest thing can be a great subject. The little human detail can become a leitmotiv.
—Henri Cartier-Bresson