shot lost to infinty - just imagine a long lens with a lot of teleconverters, flash and a tripod Ok its not a real 800mm its a 70-200 + two 2*Teleconverters (canon and sigma). Turns out to get the 1.4s on needs an extension tube due to silly protuding parts! The results are not as bad as I thought they would be - light is key for this and very bright light out is definatly needed. Couple that with manual mode to get a little more control and a rocksteady support. Focusing is all manual and the depth of field is fine, but not too fine. Its not got the speed to capture movement - not tried in direct sunlight but then it might work - so its a stattic sniper! Test shot - taken from a beanbag support out of a window - resized, edited and sharpened. f9,1/6,ISO 400 flash on link to larger: http://farm4.static.flickr.com/3487/3263751879_a41f01bda5_o.jpg web serviceable, a little less than sharp fullsized: 100% crop from centre with no sharpening: with more practice and stronger light (evening overcast grey at the moment here) I recon I can get a little more out of this combo!