imagemeister wrote:
Lack of sharpness concerns me. You may have slight backfocus here.
Even on tripod, the 160 SS (at 600mm magnification/and/or subject movement) scares me !
If this is a Tamron G1 lens, I would consider shooting at 500-530mm and cropping with pixel enlargement for a better IQ result.
Seconding this.
Also S/160 is too low for that kind of range. I always shot S/1000 or above to get a decent stable shot.
Sometimes 1600 to 3200 if it moves very fast (like hummingbirds).
CM: does your lens support stabilization? (The sigma contemporary and sport should have). It should help you a lot if you enable it.