Originally posted by philippe Well, if, soon or later, Pentax goes FF, then with the FA's you will be ready, I did say "if"...
But, as you already have a nice zoom lens (F 2.8), why not considering the less expensive 100mm (F 2.8) WR macro, which, BTW, is FF too.
I'm sorry but I never get why people offer up f2.8 macro lenses (both the Sigma 105 and Tamron 90 are also incredibly sharp with gorgeous bokeh) as considerations for low light shooting. They are a stop slower than the 77, the focal length is
generally less than ideal, they rack from focus limit to focus limit (unless like the Tamron they have a limiter) and are generally slow to focus anyway. They are not the ideal portrait lens but can be excellent ... in the right situation.
To PaceYY.
If you are considering a 77 for shooting bands then you must be pretty close and with that consideration in mind the 77 is a very good choice, but maybe a 50/55 f1.4 or
possibly a f1.2 would be even better. Though for the best shots you would need flash anyway - in which case something like the Tamron 17-50 or 28-75 (both f2.8) would be ideal.
77 Ltd - w/o. flash
77 Ltd - w. flash