On Thu, 16 Nov 2000, Paul Prior MD wrote:
> No, what I am confused about is if DOF preview shuts down the aperture
> to "show" the DOF, that should only -increase- DOF, right? So why
right
> don't you see a very shallow DOF all the other times when the lens is
> wide open.
You do. 8-)
Did you try what I proposed? If you focus to something even relatively
distant, and everything in the view is at about the same distance, you
will not see any difference (or a difference you could really notice). Try
it with extremes if you are wondering. Put something on a table, bottle
for instance. Focus to it with your 50 f/1.4 and go as close as you can so
that you can still focus. The DOF is smallest when you use the larges
aperture and have focused as close as you can. Now the difference is the
largest you can get. Look behind the bottle to see what ever is behind
there (sofa, window, bookshelf...) and now try the difference of normal
viewing and using the DOF-preview. If you screen goes dark (with small
aperture like f16) your DOF-preview is working and there is no problems
with the camera. Now study the DOF and how it changes (it get's dark and
it's hard to do, but...). I don't know any better setup for studying the
DOF.
Best regards,
Hugo.
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** Hugo G�vert **
** [EMAIL PROTECTED] http://www.hut.fi/~hugo **
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** Sometimes I think the surest sign that intelligent **
** life exists elsewhere in the universe is that none **
** of it has tried to contact us. -- Calvin. **
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