Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-30-2016, 02:15 PM   #1
Site Supporter




Join Date: Jun 2008
Location: Stratford, CT
Photos: Gallery
Posts: 652
FA50 macro Vignetting

Went out with my K-1 for the first time, so sorry if this is a common question.

When using my FA 50 2.8 macro (with aftermarket collapsible rubber hood), if I pointed the lens down at flowers it worked fine, but when pointed straight at a car or building I got pretty heavy vignetting. F-stop was 8 and 11. Does that make sense? Tried it without the hood and same result.

07-30-2016, 02:30 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,957
It's rare to see that much vignetting stopped down to F8. Could you post a sample?

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

07-30-2016, 02:31 PM   #3
Site Supporter




Join Date: Jun 2008
Location: Stratford, CT
Photos: Gallery
Posts: 652
Original Poster
I think I deleted them but I'll check later.
07-30-2016, 06:15 PM   #4
Site Supporter




Join Date: Jun 2008
Location: Stratford, CT
Photos: Gallery
Posts: 652
Original Poster
I deleted them; I'll take some more tomorrow. I just didn't think you got vignetting with any film lens. As I said, I'm new to full-frame.

07-30-2016, 07:01 PM   #5
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,624
I don't have the F 50 F2.8 macro, but it sounds like you are saying that on a full frame camera, the lens vignettes when you focus on a further away object while it doesn't show vignetting in close focus. It's entirely possible that for that macro lens, it was a design compromise.
07-30-2016, 07:17 PM   #6
Site Supporter




Join Date: Jun 2008
Location: Stratford, CT
Photos: Gallery
Posts: 652
Original Poster
QuoteOriginally posted by JinDesu Quote
I don't have the F 50 F2.8 macro, but it sounds like you are saying that on a full frame camera, the lens vignettes when you focus on a further away object while it doesn't show vignetting in close focus. It's entirely possible that for that macro lens, it was a design compromise.
That's exactly what's happening; thanks for the response. I was planning on using the 50 as a walkaround prime, but it looks like I'll have to go another direction. The D FA 100 WR does not vignette, BTW.
07-30-2016, 08:04 PM   #7
Veteran Member




Join Date: Jun 2010
Location: Marina CA
Posts: 300
The lens elements in that lens shift to optimize for whatever distance the lens is focused at. There is no "design compromise". Maybe the lens is defective/broken.
07-31-2016, 05:22 AM   #8
Site Supporter




Join Date: Jun 2008
Location: Stratford, CT
Photos: Gallery
Posts: 652
Original Poster
After taking a few more, it looks like it's actually the hood, even fully collapsed, causing the vignetting.

07-31-2016, 11:22 AM   #9
Site Supporter




Join Date: Apr 2016
Location: Toronto
Photos: Gallery
Posts: 93
QuoteOriginally posted by DennisH Quote
After taking a few more, it looks like it's actually the hood, even fully collapsed, causing the vignetting.
SMC Pentax-FA 50mm F2.8 Macro Reviews - FA Prime Lenses - Pentax Lens Reviews & Lens Database

The most recent user review is from somebody using it with the K-1 who doesn't seem to have experienced vignetting. My understanding is that the lens is built in such a way that it doesn't need a hood. The pictures I've seen from it (with various cameras) definitely have a special quality.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
dslr, full frame, full-frame, hood, k-1, k1, pentax k-1, vignetting
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: FA50 Macro nomadkng Sold Items 6 10-14-2014 08:03 AM
For Sale - Sold: REDUCED PRICE Fa50, fa50 macro, dfa100, da14, fa43, fa77 trustkor Sold Items 10 04-16-2013 09:59 PM
For Sale - Sold: K100D Super, 18-55, DA21, FA28, DA35/2.8 macro, DA40, FA50/1.7. FA50/2.8 macro dgaies Sold Items 14 09-18-2011 03:46 AM
FA50/1.4 vs FA50/2.8 Macro bhairavp Pentax SLR Lens Discussion 17 06-30-2011 05:49 AM



All times are GMT -7. The time now is 11:28 PM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top