Originally posted by pasorro Hi,
I own a sigma 300 2.8 with sigma 1.4 and 2x tc dg version
My cameras dont recognise the total focal lenght , 420 and 600, and it shows 300mm in the exif. So Ibis is not working at the right focal lenght. Is there any way to enter it manually? may be with tape in some pin beetween camera and lens? wich of them?
thanks in advance and sorry bad english,
Paco from Spain
What are you shooting with this combination?
Any motion at all by the subject, and you would want a shutter speed of 1/500, so IBIS would be of minimal value anyway.
note: I've been told that a number "too small" is better than one "too large", so having the IBIS set for 300mm might be OK.