Does the crop factor of these cameras affect the perspective of a lens?

D

dtjohns1

Well-known member
^^^ Say i'm shooting with a 50mm lens which crops to around an 80mm lens. Does my perspective stay of that of a 50mm lens or is it that of around a 80mm as well?
 
Perspective....as in the apparent distance between foreground and background? No, that will not change.
 
Gotcha so if I'm shooting with a 28mm lens for a CU shot on someone it will give them the whole big head effect, a 50mm will give me a normal perspective and a 85mm will give me the flattened plane perspective thats good for faces
 
dtjohns1 said:
Gotcha so if I'm shooting with a 28mm lens for a CU shot on someone it will give them the whole big head effect, a 50mm will give me a normal perspective and a 85mm will give me the flattened plane perspective thats good for faces
Click to expand...

yes, I'm assuming you're on a t3i, 60d or 7d? A 28mm or 35mm will give you a great 'normal' field of view. Good for a medium close up to wide shots. 50mm and 60mm is going to give you a good close up. I seldom use 85mm on aps-c. Maybe for cutaways or ecu. For very wide shots you will need an 18 or 20mm
 
Last edited:
J Davis said:
yes, I'm assuming you're on a t3i, 60d or 7d? A 28mm or 35mm will give you a great 'normal' field of view. Good for a medium close up to wide shots. 50mm and 60mm is going to give you a good close up. I seldom use 85mm on aps-c. Maybe for cutaways or ecu. For very wide shots you will need an 18 or 20mm
Click to expand...

Yeah if you want wide shots you need 20mm and less. For Extreme wide shots you need 15mm or less. I believe the lowest is 10mm, anything under that is a fisheye.


If you have a 18-30mm zoom lens, 50mm prime lens & a 85mm prime lens you can almost shoot anything on a aps-c camera
 
vision_filmz said:
For Extreme wide shots you need 15mm or less. I believe the lowest is 10mm, anything under that is a fisheye.
Click to expand...

A lens fisheye abilities are not indicated by any particular focal length. Rather, it is to do with the design of the lens. A wide angle lens can deal with distortion in different ways: they can be fisheye or rectilinear, depending on their design. A 15mm rectilinear lens gives a completely different look to a 15mm fisheye lens. Rectilinear lenses keep straight lines straight (more or less). This results in a totally different type of distortion to the the extreme barrel distortion seen in fisheye lenses.

In regards to perspective, distortion and FOV, it is worth keeping in mind that distance to the subject also plays a factor - moving further away will reduce the distortion. So a 28mm lens with a FF camera, trying to shoot a CU headshot you will get a fair bit of distortion. Put that same lens on a APS-C camera, and to frame up the same shot you will need to back up further from the subject. Now you have less distortion than the 28mm/Full Frame combo, the same framing, but a very different perspective.
 
You must log in or register to reply here.
Back
Top