Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Sony Alpha dSLR / Konica Minolta dSLR, Sony SLT

Reply
 
Thread Tools Search this Thread
Old Jul 31, 2009, 11:04 AM   #31
Junior Member
 
Join Date: Jul 2009
Posts: 3
Default which lens

I am looking for a 50mm prime for my a200, what can I search for? I heard minolta, but what kind? Also, any generic brands you recomend?
Thanks!
justagirl1980 is offline   Reply With Quote
Old Jul 31, 2009, 11:20 AM   #32
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

You've got multiple choices available.

In a new lens, the least expensive route is the new Sony 50mm f/1.8 DT lens (around $149). It's designed with a smaller image circle for cameras with APS-C size sensors, so you couldn't use it without vignetting on a full frame model like the A900 without using one of the crop modes.

Sony also offers a 50mm f/1.4 AF lens. It's designed for full frame sensors so it will work on either camera type (APS-C or 35mm film size sensors).

On the used market, you can find Minolta 50mm f/1.7 and 50mm f/1.4 AF lenses. I'd look for them in the Minolta Autofocus Lenses sections of the used listings at vendors like http://www.keh.com and http://www.bhphotovideo.com
JimC is offline   Reply With Quote
Old Jul 31, 2009, 11:37 AM   #33
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,572
Default

Quote:
Originally Posted by justagirl1980 View Post
I am looking for a 50mm prime for my a200, what can I search for? I heard minolta, but what kind? Also, any generic brands you recomend?
Minolta made a 50mm f/1.7 since 1985 that was quite good. Sony discontinued it when it took over in 2006. See 50 mm Autofocus Lens for Minolta Maxxum 7000 SLR and Minolta Maxxum AF 50mm f/1.7 Lens Sony Digital, for instance. (Don't let the high prices of the Buy It Now listings scare you off.) (This is the most popular A-Mount lens that sells on eBay. 20-40 of them seel every week.)

Minolta also made a 50mm f/1.4 that Sony continues to make under its own name. See Minolta Maxxum 50mm f1.4 AF Lens and 50mm f/1.4 Lens

In addition, Sony just released its own 50mm f/1.8. See DT 50mm f/1.8 Lens

If you're looking for a 50mm macro lens, Minolta also made a 50mm f/2.8 macro that sony also continued, and Sigma makes one as well. See 50mm f/2.8 Macro Lens and Sigma 50mm f/2.8 EX DG.

Also, Tamron just released a Tamron SP 60mm f/2 Di II and Sigma has a Sigma 70mm f/2.8 EX DG that you might be interested in.
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Jul 31, 2009, 11:46 AM   #34
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,572
Default

Quote:
Originally Posted by JimC View Post
In a new lens, the least expensive route is the new Sony 50mm f/1.8 DT lens (around $149). It's designed with a smaller image circle for cameras with APS-C size sensors, so you couldn't use it without vignetting on a full frame model like the A900 ...
You can't use it on an APS-C size sensor without vignetting either.

From the manual for the SAL-50F18:

"When you use lens, the corners of the scene become darker than the center. To reduce this phenomena (called vignetting), close the aperture by 1 to 2 stops." [sic, unfortunately.]

See http://www.docs.sony.com/release/SAL50F18_EN_ES_FR.pdf

I never actualy saw a manufacturer acknowledge a flaw in a lens design like that before.

Apparently, it's not a bug, it's a "phenomena".
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Jul 31, 2009, 11:52 AM   #35
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

Less than a stop from what I can see from tests.

http://www.slrgear.com/reviews/showp...ct/1273/cat/82

If I'm shooting at apertures that wide, I usually don't care about corner sharpness/vignetting anyway.
JimC is offline   Reply With Quote
Old Jul 31, 2009, 12:12 PM   #36
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,572
Default

Quote:
Originally Posted by JimC View Post
Less than a stop from what I can see from tests.
...which is less that the Minolta 50/1.7 did.

http://www.photozone.de/sony-alpha-a...-minolta_50_17
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.

Last edited by TCav; Aug 1, 2009 at 8:48 AM.
TCav is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 7:02 AM.