deanna_hg wrote:
my thanks to all who have responded. I've read each. I did use my 70-300m which is a tamron with vr. I don't know what the OS is, sorry. The photos were fair but would have like them to have been sharper. To really see the deer I had to enlarge them. I may just be jumping the gun so to speak.
OS (Optical Stabilization) is the Sigma's designation: same as Nikon's VR (Vibration Reduction) and other's IS (Image Stabilization)...and probably others (I think Pentax has yet another name).