On Tue, 15 Jul 2008 19:06:25 -0400, in rec.photo.digital M-M
<nospam.m-> wrote:
>Yes, with my Fieldscope 82. I thought shutter priority 1/500 should be
>enough and I didn't want to go to ISO1600. Looking back, I believe you
>are correct, and 1/500 could well be slow for a focal length of 1500mm.
I find it's very tough to get better than 1/fl sec at 800mm in all but the
brightest of lighting, even with VR using the 200-400 f/4VR + TC2E at full
resolution. Very easy to apply bicubic sharper to resize smaller and get
sharper/smaller images. But the goal should be to get sharp original
resolution images. The Bard Owl images I posted links too showed exactly
this lack of sharpness at full resolution, shot in the early morning under
full cover of foliage. IIRC the original crop was ~1900 tall and the image
I posted was 1024 tall. This made a discernibly noticeable difference in
the final result. I wish I'd bumped the iso as I got out of my truck, but
didn't have the time/presence of mind.
>I don't know what sharpening luminence channel means. Can it be done
>with Elements?
OK, thought I saw PS6 in the exif, wasn't thinking PSE6. I don't believe
PSE can convert to CIE LAB space.
http://en.wikipedia.org/wiki/Lab_color_space
In NI you can separately choose Y/Cr/Cb components to sharpen as well, at
lest in the paid version.