re: OM-1 and 150-400
I immediately received higher keeper rates (number of critically sharp images per burst) once I switched from Auto-ISO to IS-1 with, and without, the TC2.0 attached.
(i've posted numerous times, with images, about this at a different site if you're interested)
*iirc the manual states for Auto-ISO that the IS system may or may not apply IS to any/all of the multiple axes. I took that decision making process away from the camera.
Still, I normally reserve the 2.0CT for brighter conditions....the brighter the more keepers.
When I find that temperature differences are at play in degrading IQ (even beginning at -15C at times) I also remove the lens hood (either in that car before stepping out and/or simply taking it off and sliding it over my wrist to hold onto while outside shooting). the best results I get in cold temps are when I'm out walking the trails. doing car/drive-by photography in the cold is almost always a guaranteed low keeper unless i get out of the car and stay out of it for a good long while (ie. found a perched Greta Gray owl)
I found that IQ results (keeper rates are low) in these car drive-by conditions rarely impress and I assume that I am simply not allowing enough time for acclimation (even with the lens hood off).
---all of the Topaz products (Denoise Ai, Sharpen Ai, and Photo Ai) I've used and upgraded time and time again for the past few years were always hit and miss...adding/enhancing artifacts, randomly smearing here and there. I've used nothing but Lr Denoise since it came out and it has never failed me once.
I like to see your owl samples as I would darn year bet they are suffering from heat distortion issues.
re: OM-1 and 150-400
I immediately received higher keeper rates (number of critically sharp images per burst) once I switched from Auto-ISO to IS-1 with, and without, the TC2.0 attached.
(i've posted numerous times, with images, about this at a different site if you're interested)
*iirc the manual states for Auto-ISO that the IS system may or may not apply IS to any/all of the multiple axes. I took that decision making process away from the camera.
Still, I normally reserve the 2.0CT for brighter conditions....the brighter the more keepers.
When I find that temperature differences are at play in degrading IQ (even beginning at -15C at times) I also remove the lens hood (either in that car before stepping out and/or simply taking it off and sliding it over my wrist to hold onto while outside shooting). the best results I get in cold temps are when I'm out walking the trails. doing car/drive-by photography in the cold is almost always a guaranteed low keeper unless i get out of the car and stay out of it for a good long while.
I found that IQ results (keeper rates are low) in these car drive-by conditions rarely impress and I assume that I am simply not allowing enough time for acclimation (even with the lens hood off).
---all of the Topaz products (Denoise Ai, Sharpen Ai, and Photo Ai) I've used and upgraded time and time again for the past few years were always hit and miss...adding/enhancing artifacts, randomly smearing here and there. I've used nothing but Lr Denoise since it came out and it has never failed me once.
I like to see your owl samples as I would darn year bet they are suffering from heat distortion issues.
Jan 17, 2024 at 01:40 PM
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