I saw a few short shots from that debate on the local news, dunno how you
could stand watching 2 hours of it !
By the way, those blossoms look good (at least on the web).
...Wayne
-----Original Message-----
From: olympus
[mailto:olympus-bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx
] On Behalf Of bj@xxxxxxxxxxxxxxx
Sent: Tuesday, 27 September 2016 10:14 PM
To: Olympus-List <olympus@xxxxxxxxxxxxxxxxx>
Subject: Re: [OM] Look here Brian...
Moose wrote
On 9/26/2016 4:10 PM, Chuck Norcutt wrote:
No, I don't
accept that. Pixel pitch of the E-M5 and 6D are about the same. Also
remember that Ken said the image was heavily cropped. As Moose has said, you
can't shoot the E-M5 at f/22 and then be surprised that there's not much
detail or sharpness to the image.
In fact, since the
6D has about the same pixel pitch you can't shoot it at f/22 and expect
razor sharp results either.
Weeelll, correct, but easy to
misunderstand. The 6D is FF, so for the same display size, magnification is
less and one may stop down further for the same visually apparent loss to
diffraction. I'm sure you can run your calculator on it, if you wish. My
experience says 1.5 to 2 stops.
Ken was shooting at
f/4-f/5.6. Brian should probably stay at f/9 or less for sharp images.
Yup, although without deconvolution "sharpening", f5.6 is safer for maximum
resolution.
.......................................................................
When I shot the Sigma 90 macro images at f/16 and f/22
http://zone-10.com/tope2/main.php?g2_itemId=20781
http://zone-10.com/tope2/main.php?g2_itemId=20784
I did so in order to obtain the maximum DOF. Which I did. What's more that
was achieved in the 1200 pixel image easily, with fine detail showing from
the fine hairs on the ovary to the tips of most of the stamens.
Any loss of that goal due to diffraction effects is negligible. At one end
or other of the flower the image would be quite out of focus which in my
opinion would be much worse than what diffraction effects might do, by
several orders of magnitude.
I've
just spent the last 2 hours (it's now 1.11 am) watching a video of the
Clinton/trump 'debate', I've had a long day touring around distant
countrysides with my daughter, so discussion of other matters will have to
wait.
Brian
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