AF in Canon 7D-Is it Possible

[squishy]

Do you want a zoom with IS and closer focussing, or a prime with better IQ and focus speed?
It's a tricky choice.

C'mon canon, release a 400mm f/5.6 IS.

[The_Moaner]

Thank You Pauline & glsammy & squishy for your view on the len/s.

So I have about 4 telling me to hang onto the Sigi 150-500mm for a little while and buy the other two lenses 70-200 & 150 macro.

Same amount saying Ditch the Sigi and buy the 400 f5.6.

My decision will be made by Sunday.
Thank You.
Dennis

P.S--Nice images those Graham.