I just had a chance to hold Pentax SMCP-D FA Macro 100 F/2.8 (it is the new smaller version).
My first impression: how small and lightweight it is. I never had a chance to hold the F or FA version of that lens, but this one is really light. Second impression: when I attached it to the body (DS) and tried to autofocus, - the range of the motor run (and the lens extending) is loooong. The noise is rather loud (or just annoying?). Unfortunately, it doesn't have a focus range limiter like the one available on F and FA, so if the AF misses - it goes the entire range. And in low light (gloomy day, around 10 am, inside, desired exposure: 1/10 sec, f/2.8), - it misses easily and profoundly. The hood is very loose and I would be afraid to lose it the first time I walk with the camera in my hand with this lens and the hood attached. On the positive side: unlike F, this lens has a clamp switch. The lens has automatic AF clutch mechanism - so you can focus manually without any additional switches if the body AF is not engaged. Interesting detail: the lens is assembled in Vietnam, but the soft case that comes with it, and lens caps are "made in Japan". (and the manual is for both D FA 50/2.8 and 100/2.8) Does anybody know if all D FA 100 F/2.8 are assembled in Vietnam? I am still trying to choose between a D FA and a used FA. I wish I could try them side by side. Igor
