09-04-2011, 09:21 AM
Thanks for the suggestions.
Pentax 135 f/2.5... there seems to be many models around. Are they the same? The reviewed "K" one seems unexciting. Can't find the f/1.8 in a quick look. I do agree the GPS unit looks like a handy accessory, combined with the K-r and a few lenses... the cost is adding up fast though. I'm not sure how much use I'd put it to though. Plus I'm not putting another body though astro conversion, if I can find anyone that does Pentax anyway.
Oly 150/2 - should be nice. Too expensive, plus I'd have to worry about image circle, mount conversion etc...
Sony/Zeiss 135 f/1.8, I had forgotten about that. It may be marginally "better" than the Canon f/2, but for the huge increase in price and requiring either a different body or mount conversion, is more pain than it is worth. The A77 definitely is not an option for it if I were to consider it. This is one application where the mirror ghosting is highly likely to show up and absolutely unacceptable at any level.
Tamron 180mm f/2.5 - looks interesting but I can't find one.
I guess I should add I already have the Sigma 150mm f/2.8 macro in this area, hence wanting something a bit faster. I'm not sure f/2.5 is faster enough, unless it was significantly better wide open than the Sigma.
So overall I don't think there sounds like anything that would sway me from the Canon 135/2. I found one used but it is hardly less than a new one. But is it worth it as I don't think I'd really have a use for it outside astrophotography... I'm not sure. So expect to hear that I bought one tomorrow. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='
' />
Pentax 135 f/2.5... there seems to be many models around. Are they the same? The reviewed "K" one seems unexciting. Can't find the f/1.8 in a quick look. I do agree the GPS unit looks like a handy accessory, combined with the K-r and a few lenses... the cost is adding up fast though. I'm not sure how much use I'd put it to though. Plus I'm not putting another body though astro conversion, if I can find anyone that does Pentax anyway.
Oly 150/2 - should be nice. Too expensive, plus I'd have to worry about image circle, mount conversion etc...
Sony/Zeiss 135 f/1.8, I had forgotten about that. It may be marginally "better" than the Canon f/2, but for the huge increase in price and requiring either a different body or mount conversion, is more pain than it is worth. The A77 definitely is not an option for it if I were to consider it. This is one application where the mirror ghosting is highly likely to show up and absolutely unacceptable at any level.
Tamron 180mm f/2.5 - looks interesting but I can't find one.
I guess I should add I already have the Sigma 150mm f/2.8 macro in this area, hence wanting something a bit faster. I'm not sure f/2.5 is faster enough, unless it was significantly better wide open than the Sigma.
So overall I don't think there sounds like anything that would sway me from the Canon 135/2. I found one used but it is hardly less than a new one. But is it worth it as I don't think I'd really have a use for it outside astrophotography... I'm not sure. So expect to hear that I bought one tomorrow. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='
' />
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.