06-14-2010, 08:45 AM
[quote name='Alexander (former netrex)' date='09 June 2010 - 10:44 PM' timestamp='1276087497' post='385']
The sensor is much larger than the 1D sensors (APS-H, 28.7mm*19mm). The 645D crop factor is 0.78, not 1.36. Its diagonal is 55mm vs. the APS-H's diagonal is 34.4mm, so the crop factor is 1.26 (if the sensor is exactly 28.7mm*19mm).
Unless I've misunderstood something very much.
[/quote]
The only problem is we don't always fit our subjects diagonally... not always:
http://www.flickr.com/photos/genotypewri...412366421/
<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />
GTW
The sensor is much larger than the 1D sensors (APS-H, 28.7mm*19mm). The 645D crop factor is 0.78, not 1.36. Its diagonal is 55mm vs. the APS-H's diagonal is 34.4mm, so the crop factor is 1.26 (if the sensor is exactly 28.7mm*19mm).
Unless I've misunderstood something very much.
[/quote]
The only problem is we don't always fit our subjects diagonally... not always:
http://www.flickr.com/photos/genotypewri...412366421/
<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />GTW