[quote name='wim' date='15 July 2010 - 02:22 AM' timestamp='1279153366' post='1011']
It also means that you can get frame filling images on a FF camera, with such a lens, provided you are either close enough, or with a zoom lens if you zoom in by some, generally a factor of about 1.3 to 1.5, i.e., zoom, e.g., a 10 - 20 mm lens to somewhere between 13 and 15 mm to determine where the point is where the VF is completely filled by the image.
[/quote]
This is the case for some lenses ... but not for all.
The Tamron 17-50 for instance does never fill the image of a FF camera. (Regardless which focal length you use and which aperture).
It also means that you can get frame filling images on a FF camera, with such a lens, provided you are either close enough, or with a zoom lens if you zoom in by some, generally a factor of about 1.3 to 1.5, i.e., zoom, e.g., a 10 - 20 mm lens to somewhere between 13 and 15 mm to determine where the point is where the VF is completely filled by the image.
[/quote]
This is the case for some lenses ... but not for all.
The Tamron 17-50 for instance does never fill the image of a FF camera. (Regardless which focal length you use and which aperture).