On 1 Jul 2005 at 7:38, Shel Belinkoff wrote: > Thanks Rob ... Boz's site shows the A version to be quite a bit lighter > than the K version. Any idea if this is correct, and, if so, why is the > lens lighter? It would seem - at least on first surmise - that something > had changed in materials or construction.
I haven't checked the K but I suspect it's constructed of more aluminium than brass? I've owned both versions simultaneously and I never really noticed a difference. The A50/1.2 performs pretty nicely on the *ist D though surprisingly the A50/2.8 macro seems to snap into focus (visually) a little more obviously (maybe because it's so damn sharp wide open?). If you have an A50/1.4, A50/2.8 or a SMCT55/1.8 I could produce some direct comparison shots for you tomorrow? Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
