View Single Post
  #22  
Old 22-01-2013, 10:50 PM
OzEclipse's Avatar
OzEclipse (Joe Cali)
Registered User

OzEclipse is offline
 
Join Date: Jun 2012
Location: Young Hilltops LGA, Australia
Posts: 1,177
Quote:
Originally Posted by mithrandir View Post
Joe, that must depend on the camera. Canon have a 1.6 crop. Sony have a 1.5 crop. I forget what Nikon is but it is a bit different again. So does 400 apply to Sony and should it be 375 for Canon?.
Andrew,

You are reading way way too much into this. It's a very rough guideline not a precise calculation. For a 14mm lens the difference between using a factor of 400 and 375 is about 2s difference in exposure or 0.002 microns or about 1/2000 of one of your 4um pixels. It doesn't matter.

cheers

Joe
Reply With Quote