Hi all, anyone know and/or use this zoom? I have found the following on:
http://medfmt.8k.com/third/cult.html#tokina -------- Tokina 28-85mm f/4 RMC and f/3.5-4.5 ATX Tokina designed an RMC f/4 version of this lens which had a constant aperture, unlike the later ATX variable aperture version. The RMC version lacked the macro ability added to the later ATX version too. The ATX lens had a 1:3.5 macro capability and was significantly lighter (17 1/2 ounces versus 21 ounces) and slightly shorter (3 inches versus 3 1/2 inches). One big advantage of the variable aperture ATX zoom is that it used much smaller, lighter, and cheaper filters (62mm versus 72mm for the original constant aperture f/4 zoom). This filter factor is quite important if that new zoom means you have to run out and get all new filters for your new bigger zoom lens. That constant aperture may be nice, but you may pay for it twice, once for the lens and again for a new set of larger and expensive filters! On the other hand, the original constant aperture f/4 RMC zoom was probably a bit better optically, and close-focused down to only 2 1/2 feet. And it did have a constant aperture, albeit f/4. Not surprisingly, the older optically superior lens is often significantly cheaper on the used third party lens market. -------- Perhaps it isn't up to Pentax zoom standards, but it sounds like a nice lens to do candid work. >From all the info I have gathered from you all and the web I'm still pretty confused as to what zoom within say 24-105 is a good one. Do I really need to go Pentax or, as some suggested, go Tamron or otherwise? I want to use this zoom when quick reacting is required, ie where changing primes is out of the question. :-) Paul Delcour
