Only 6.3! The 170-500 is nominally 6.7 but unusable below 9.5 (too soft) at
the long end. Just as good as the 55-300 in that range, mind you.
Alan C
-----Original Message-----
From: Larry Colen
Sent: Saturday, February 11, 2017 7:24 PM
To: Pentax-Discuss Mail List
Subject: Re: GESO Not capable of mach 3+
Alan C wrote:
OK, question answered. The Bigma beats the 170-500 hand down. You can
easily give Paul & Jack a run for their money.
Thanks Alan. Don't read too much into the comparison. The shots with
the Bigma were on a different day, in better light, on a 24MP APS body
rather than what would be 18MP. I just did a quick check, with the
bigma/K-3 a blackbird was about 1700 pixels long, with the 55-300 it was
about 800 pixels long, so on tight crops I get about 4 times the number
of pixels, which works out about right ((500/300) * (24/18))^2.
However, the bigma is a damn fine lens for the money, I picked mine up
used, along with the 50/2.8 macro for $1000. The downsides to it are
pretty harsh bokeh, it's not weather sealed and it's only f/6.3 at the
long end.
As I write this, there's a blackbird nearby singing.
LRC
Alan C
-----Original Message----- From: Larry Colen
Sent: Saturday, February 11, 2017 5:25 AM
To: Pentax-Discuss Mail List
Subject: GESO Not capable of mach 3+
I wandered out to the river today, but wasn't able to get a hummer.
The bigma on the K-3 did a lot better with tight crops on small birds
than did the 55-300. No hummingbirds, but quite a few blackbirds in the
cattails
http://www.flickriver.com/photos/ellarsee/sets/72157678627942070/
I was also amused by the jail for lost balls:
https://www.flickr.com/photos/ellarsee/32449329990/
--
Larry Colen [email protected] (postbox on min4est) http://red4est.com/lrc
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