ryzan76, best for me still the Sony Carl Zeiss 135mm F1.8, weighing under 1 KG. All these F2.8 telephoto zoom lenses go in the 1.4-1.5 KG range.
chiggy: The Tamron let more shots through especially at the start of the sequence (I originally counted 18 but discarded the first 4 because I started shooting earlier (based on thisiskj's head magnification in pictures)).
I would say that the Tamron is pretty accurate on the A900, much more than online reports say.
AF noise, not noticeable and not particularly different from any other screw drive lens on the Alpha. In short, it was neither loud nor different enough to note. It did not sound horribly loud or geary like the Cosina 100mm F3.5 Macro "Plastic Fantastic".
Again I must stress that the AF is driven by the body and not by a Transformer-like-sounding Tamron micro-motor/buzzer as it is on Canon/Nikon variants. That's probably why AF sounds alright.
The Sigma may appear to focus faster but this might be an illusion due to its silence. In the end it failed to cope with AF-C tracking, hesitating a lot. In comparison the Tamron was very positive and confident to fire.
The Minolta 80-200mm F2.8G HS APO has physical 'feedback' when you focus - you can feel it shifting the heavy focus elements. This by all means was the loudest lens.
I would also say that lenses with less spherical aberration HELP with getting positive focus confirmation - that might be why the Sigma was not confident to fire even at the start of the sequence. You will discover that your lenses find it hard to focus when you put a +4 closeup filter on - same principle.
Now this would be a different case if the Tamron let in a lot of shots and was highly inaccurate. But here it was a good performer, and pretty sharp at all lengths!
nic_chm himself says that the Sony is no speed demon unless the 3 meter focus limiter is activated. Of course, only the Sony has a 3 meter focus limiter...
All the people who came to Studio Zaloon (eviz, thisiskj, nic_chm, kysham) had A700s and I didn't want to ask even more of a favor to try it on an A350.
Photography The Sony Alpha Thread V23!, The Orange Legion
Mar 31 2009, 03:22 PM
Quote















0.0252sec
0.52
6 queries
GZIP Disabled