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Canon 5D mark ii - What is the depth-of-field preview button?
#7
[quote name='wim' date='19 July 2010 - 11:28 PM' timestamp='1279574890' post='1136']

Rainer and popo are both right.



There is one caveat with modern cameras however, although this was also valid to some degree in the film age. Unless you use an -S type focusing screen (for Canon anyway), an Eg-S for the 5D Mark II, which is also called a high precision matte, or something similar on any other camera, you will perceive a DoF through the view finder as if the lens is stopped down to approximately F/5.6.

[/quote]



Surely what it looks like depends on what the maximum aperture of the lens is? To be extreme, I doubt an f/1.2 shows the same DOF as an f/5.6, and I'm pretty sure an f/8 (e.g. mirror lens) will not look like an f/5.6. Wouldn't it be more correct to say that it looks like about two stops slower (assuming you were talking about f/2.8 lenses?



-Lars
  


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Canon 5D mark ii - What is the depth-of-field preview button? - by Guest - 07-20-2010, 07:42 AM

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