f8, I am ONLY going to shoot at f8

Started Jul 18, 2005 | Discussions thread
Daniella Forum Pro • Posts: 53,000
Re: f8, I am ONLY going to shoot at f8

it'S not the sweet spot for the 20d. it's the sweet spot usualy for consumer glass.

if you have a good L lens you can have the same results at much wider aperture. My 80-200 F2.8 L is at its sharpest point at F3.5-F4.

My Canon 400mm F5.6 L is the same wide open at F5.6 than it is at F8.

Consumer lenses tend to be quite soft wide open and are usualy best at F8.

tivoboy wrote:

So, after three weeks of using the 20d, I can come to some
conclusions. I won't go into detail about DOF, or paramaters, or
the need to PP, or L series lens quality and "necessity" to get the
best shots.

not to mention auto-focus concerns, focus points, pushing ISO or
other. These things are subjective and can be changed, debated and
worked out on a user per user basis,

but, one conclusion I HAVE come to is the following:


I don't know what it is, but every time I get a great shot,
regardless of lens, 50 1.8 mk1, 28-135 IS, 70-210 3.5 (I know, how
OLD is this guy) 85. 1.8, I find I am looking at the shot details
and see, that as long as the shot is above a buck and a quarter
1/125+ and in focus, at f8, BOOM BABY, contrast, nice DOF, awesome
sharpness, excellent detail, etc.

I have even gone so far as to bracket, and MANUALLY go up and down
the stops, to check out 10.00 and 11, or 22, or 5.6, or 2.8 or 2.2.
Not having to push the ISO to get good light, I continue to get
ROCIN' images at f8.

What IS it? Is this just the sweet spot for the 20d? I'll post
some images so others can check it out, but damb, this seems to be
some wierd anomoly but one I can continue to work towards. Just
put the puppy on AV, set it at f8, push the ISO if need be, hit the
AWB as necessary and shoot shoot away.


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