
Originally Posted by
Arthur Morris
Hi Phil,
re:
That 4 stop IS capability of the 800mm helps but I think locking down the system and long lens techniques has a lot more going though.
I agree that locking everything up helps but I have made sharp images with the 800 down to 1/6th sec. and I never made anything sharp at 1/20 se. before the 800 so I have to disagree with the complete statement above. (Note also that the flash also help with sharpness.)
Most important thing is for the subject to remain still.
I agree with you 100% on that.
Artie - When we are together in the field it is easier on her with the 800mm as it is just a shade heavier than the 500mm + 1.4 ext. I still carry the 600mm + 1.4 ext. We are very tempted to sell the 600mm and go for another 800mm. Time will tell and we still have the 500mm that has not seen much action eversince the 800mm came into the picture!
If money is not a big issue (and I assume that you will be selling the 600 f/4), then the 800 is a no-brainer choice over the 600. It is lighter, sharper, and the need for TCs is greatly reduced (the latter resulting in increased sharpness). And the 4-stop IS :) :D :)