I think I might give it a try when I get home from work, I'll check for protruding rear element first of course.
I've also found Sigma very helpful I once snail mailed them asking about the availability of certain lenses and they replied stating that if Pentax took a greater market share in the near future they would make the 70-200 f/2.8 and 300 f/4 in Pentax fit. Shortly after this Pentax released the MZ-5 and the rest is history. My messages don't seem to be appearing on the list at the moment! John ---------- Original Message ----------- From: Mark Roberts <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Tue, 12 Oct 2004 06:59:49 -0400 Subject: Re: Sigma AF 1.4X worth considering? > "John Whittingham" <[EMAIL PROTECTED]> wrote: > > >I have a Sigma 1.4 EX works very well with the Sigma 300 f/4 APO, all this > >discussion has got me wondering..........has anyone tried the 1.4 with the > >Sigma 105 EX Macro? Sigma does not recommend this combination on their site > >but I'm wondering if this is a marketing stratergy as they also produce the > >180 f3.5 EX Macro. Any comments/opinion appreciated. > > I suspect the issue is that the 80 macro has a rear element that sticks > out too far for the 1.4x TC to be mounted on the lens. You could always > email Sigma and ask. I've found them to be very responsive and thorough > when I've done so. (I emailed them to ask about getting a replacement > for the drop-in 46mm polarizer for my 300/2.8 lens. Their email back > to me bounced so they actually looked up my snail mail address and > sent me a letter in response - the filter was $25.00, in case you're > wondering.) > > -- > Mark Roberts > Photography and writing > www.robertstech.com ------- End of Original Message -------
