| Latest Review Posted | SMC Pentax-FA 645 400mm F5.6 ED [IF]
This lens is very sharp and relatively light weight for its length. It is about as long of a lens for the 645D as I'd typically travel with (the length starts chewing up limited storage space in a backpack). With that in mind, I think a nice telephoto travel set with the 400/5.6 is the 75/2.8, the 120 FA macro and the 200 FA. (If weight/size needs to be kept to a minimum, then I'd go with the 75/2.8, the 150 FA and 300/5.6.)
The 400/5.6 seems to focus slightly slower than the 300/5.6 (but maybe my imagination) and not as close. WIth the hood in place, it is very large (long). Stopping down to f8 does seem to improve the sharpness. I tend to use it on a tripod (Really Right Stuff TVC-24 carbon fiber tripod) with the mirror up and my hand on top of the lens to add weight and dampen vibration. |
