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Question: Compatible lenses with the Sony a55 What other brand of lenses will fit my a55 besides Sony?
Document: Besides those, though, the picture quality is so far impressive. ive only printed a few, but they werent too shabby either. I buy a camera for the pictures, really, and if you do too, you will notice a difference in a sony vs. a nikon. I didn't think it would be a big difference when I originally bought the a55, but I regret that choice three years ago. I've wasted hundreds of pictures IMO not using a nikon.These are all my personal experiences and opinions.
I purchased this camera half a year ago, and have made fairly frequent use of it at home and abroad. I chose it for several reasons. I had been using a Sony a300 for a couple of years (until it was broken in an accident), and had used several Sony cameras in succession before as well, so I was familiar with the way Sony cameras work, had lenses that would fit this body, and had good experiences with the quality of the manufacturing.
They seem to have a lack of depth and quality. I shot with several lenses and the same was true in them all.I have since upgraded to a Pentax K5 and I have the depth and image quality I was looking for. And amazing high iso shooting - through iso 6400. Amazing.The a55 is good through iso 800 to 1600. It is crippled because of the translucent mirror. Check out the Sony a580.
My collection will keep me busy for years, these items are heirloom material - that good!update 6/26/12  -  My purchase of the prime lenses has revealed a slight problem with the Sony a55... all outside landscapes have a slightly out-of-focus horizon, as if all my lenses cannot quite focus at infinity. In some internet research, I have found others with the same observation - which has me slightly puzzled.
Also, the viewfinder to lcd screen with just your eye is a nice feature. Or was that the a55? i dont remember. Besides those things, i was extremely dissapointed, and I returned it and stood at bestbuy  for half an hour debating between the nikon d5100, d5200, and d7000. I want the d7000, but it was out of my price range, so I got the d5100 to just try out a nikon; and mannn, what a difference. Huge huge huge difference.
This lens is branded under other names such as Quantaray and can be found for not much more than the price of a kit lens. I believe that all Sony Alpha & many Minolta Lenses are fully compatible with the A55 (some high quality/fast aperture Minolta lenses are available rather inexpensively). The Sony 18-55mm (27-84mm equiv) kit lens is pretty good as far as kit lenses go.
Actually there is no much to say about it. I've had it for almost 2 months and is my first DSLR. Despite some friends' recommendations to buy a Nikon or a Canon, somehow I'm "married" with Sony considering it a great and innovative brand. The camera fits perfectly my needs and though the lenses are quite expensive and limited, I don't complain. However, I should warn buyers to consider buying it with some other kind of lens instead of this 18-55mm.
The 50mm f1.8 is sharper than the kit lens, but there was no real noticable difference between the 2 when using my a330's 10mp sensor. On the a55, I could tell there indeed was a difference in sharpness between the 2 lenses!The a55 is quite a battery hog so I got two batteries (a must). But I do like how the electronic viewfinder will show you in manual mode what your pic will look like before you even have to take a picture.
It doesn't slips smoothly and will take you a little more time to fit the picture at your range need.
It's a great camera for the money i have a55 a65 a77 i use tamron lens, don't like sony lens. I shoot a lot of high school fast action sport , my next camera going to be the sony a99 it's a full frame sensor.
Answer: Every Minolta AF lens will fit and work.  Minolta started producing Auto-Focus lenses around 1985 and then Sony acquired Minolta a few years ago.  Avoid the pre-'85 MD and MC mount lenses.Carl Zeiss also make lenses for Sony and they have a Sony badge on them.Sony owns shares in Tamron, there are plenty of Sony mount Tamron lenses.  Tokina also produce lenses for the Sony mount.Sigma is the next one, however Sigma don't license the micro chips embedded in lenses and Sony have made a change to the lens mount chip on the A33/35/55.  Sigma's existing lenses may not be fully compatible with the A33/A35/A55, the error that pops up is a rare minor irritation and easily resolved though.If you are buying a new Sigma lens, ensure that it states on the box that it is compatible with the A33/A55 SLT cameras, I have a new Sigma lens with that logo on the box.  If you have a problem with a Sigma lens, you may need to return it to Sigma so that they can re-chip it for free if you have proof or purchase, or a small fee without.Edit: Sigma HSM lenses, including A33/55 compatible ones, require a further update to correct autofocus lens issues on the A65/77. There are HUNDREDS of Sony fit lenses.  Have a look here:http://www.dyxum.com/lenses/index.asp