Users of the Sigma & Sony 50 f-14

Started Dec 2, 2012 | Discussions thread
EarthQuake
Senior MemberPosts: 1,125Gear list
Like?
Re: Users of the Sigma & Sony 50 f-14
In reply to travelshots_dpr, Dec 3, 2012

travelshots_dpr wrote:

EarthQuake wrote:



Sony/Minolta (optically the same lens)

...

Sensor reflection issues(this lens was designed for film cameras)

The basic design is identical, but the Sony has a different coating that reduces the sensor reflections. That is the reason why I would always buy the Sony and not the Minolta version. I have seen comparisons that have proven the effect of the different coatings. The reviews of Dpreview and Kurt Munger also confirm the new coating of the Sony version.

http://www.dpreview.com/lensreviews/sony_50_1p4_m15

http://kurtmunger.com/sony_50mm_f_1_4id138.html

The lens is a dated design and if you want to get maximum quality, you will have to wait until the new Sony Zeiss 1.4 50mm will be on the market. But I am sure it will be much larger, much heavier, much more expensive and of course I am sure it will be better. I have the Zeiss 2.0/24mm and that lens is a real gem (sold my Minolta 2.0/28 for it).

If you judge the Sigma 1.4/50mm you have to subdevide beween the performance on APS-C and full frame. While it performed decently in the APS-C test at photozone, it failed in full frame and not just one copy. Same results for Canon and Nikon mount. I cite from the review:

"The new Sigma AF 50mm f/1.4 EX DG HSM showed pretty impressive results in our APS-C review. However, it's not quite as convincing on full format cameras. The center quality of the lens is certainly fine and even great from f/2 onwards. Unfortunately the border & corner performance is rather disappointing. "

http://www.photozone.de/canon-eos/522-sigma50f14eosff?start=1

Kurt Munger's review has shown better results for the Sigma, so he might have got a very good copy.

Sure it has updated coatings, but there is only so much you can do with updated coatings. It is still the same optical design, IE: the same glass. Updated coatings might give better resistance to flare, or slightly less sensor reflection, but it isn't going to do miracles. Copy variation probably has more of a factor in overall IQ than updated coatings.

So, have you used the Sigma 50 then? I just got my A900 and haven't tested it thoroughly on FF, but just doing some quick shots here I'm not seeing any glaring issues. Sure its a little soft in the corners at 1.4(but I would never frame a subject in the very corner at 1.4 so...). It doesn't seem to be much better or worse in the corners than the Min 50/1.4 that I still have here, but central sharpness esp at lower apertures is way better.

Reply   Reply with quote   Complain
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow