exactly, maybe at the end it all boils down to viewing angle. Maybe
focal length should be replaced by "viewing angle at focus", gets us rid
of correction factors for APS-C versus FF as well.
Jos
On 25-10-2012 11:35, J.C. O'Connell wrote:
I would think the reason SR doesnt work well for macro is that the
effective focal length of the lens gets significantly longer when
in macro mode causing a mismatch of SR parameters and lens in use.
-----------------
J.C.O'Connell
hifis...@gate.net
-----------------
-----Original Message-----
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Toine
Sent: Thursday, October 25, 2012 5:18 AM
To: Pentax-Discuss Mail List
Subject: Re: What about immage stabilization and macro
K20D manual page 67
K5 manual page 142
"The effect of shake reduction is influenced by the shooting distance
as well as focal length information. The share reduction function may
not work as effectively as expected when shooting at close ranges"
On 24 October 2012 23:33, Brian Walters <apathy...@lyons-ryan.org> wrote:
Quoting Toine <to...@repiuk.nl>:
If I remember correctly the manual claims SR should be switched off for
macro.
I don't recall seeing that in the K200D or K-5 manuals - not saying it
isn't
there, but they are large manuals and I have a short attention span :-)
The manuals do say to switch SR off if the cameras are tripod mounted.
Cheers
Brian
+++++++++++++++++++++++++++++++++++++++++++++++++++++
Brian Walters
Australian Native Plants Society (Australia)
http://anpsa.org.au
Toine
On 24 October 2012 18:32, Jos from Holland <jos_from_holl...@onsnet.nu>
wrote:
I always wondered how to adjust for image stabilization in macro. I use
SMC-M 100mm macro and SMC-M 50mm on my K5d quite often with a macro
ring.
I
have to adjust the focal distance of the lens manually. But what really
counts for image stabilization is the angle of view, I guess. So should
I
use a correction factor and adjust maybe 300mm for the 100mm lens???
Similar
things for my Sigma 17-70mm in macro mode. Any thoughts?? Greetings,
Jos
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