My Canon glass isn't so hot on the 1Ds Mk. III...

Started Feb 2, 2013 | Discussions thread
Great Bustard
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Re: The natural question, of course, is...
In reply to CanonKen, Feb 3, 2013

CanonKen wrote:

I did factor in the DOF/focal length difference, but I was curious as to what the performance would be like wide open.

A lot different.  But that's why many choose the larger format.  In any case, how often are you shooting scenes where the corners would be within the DOF wide open?

While I can get the same DOF (at 3.2 vs. 2.0), I do lose some shutter speed when shooting in the dark.

You can use whatever shutter speed you like -- raise the ISO and/or set it directly.

The corners are also unusable (though the central 50% of pixels are usable).

Again, how often do you shoot scene where the outer 50% are matter and are within the DOF wide open?

Again, this is all academic, I understand the 35mm f/2 came out 23 years ago. Again, it is able to take advantage of the entire sensor at f/8-11, but it is awful wide open. Just was expecting a bit better.

Well, the PZ review of the 35 / 2 ain't half bad:

http://www.photozone.de/canon_eos_ff/428-canon_35_2_5d?start=1

and the one photo they have with it wide open:

http://www.photozone.de/canon_eos_ff/428-canon_35_2_5d?start=2

looks quite good to me.

Hmmmm, 50mm f/1.2L would be nice...

I happen to have that lens myself.  Corners will be worse still wide open, but here are a few fullsize pics wide open on a 5D that might give you an idea of what to expect:

http://www.pbase.com/joemama/50l_wide_open

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