Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Read More.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 02 Jun 2010 (Wednesday) 11:13
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Canon 85mm f/1.8 Purple Fringing

 
Poe
Goldmember
Avatar
1,950 posts
Likes: 13
Joined Oct 2005
Location: Modesto, CA
     
Jun 02, 2010 11:13 |  #1

Does anyone else find that this lens has much more purple fringing than expected even at f/2.8 or f/4?

I expected this behavior wide open and even at f/2, but it doesn't seem to be controlled at all, even at f/4.

Could the fringing be augmented by some elements out of alignment and something that Canon repair could fix? I really want to have it significantly reduced at f/2.8 and smaller without having to resort to desaturation of the purple channel which is a global image alteration in post-processing.



Nikon D750 | Nikon-Nikkor 14-24G, 60G Micro | SIGMA 35A, 105 OS, 24-105 OS | ZEISS Apo-Distagon 1.4/55 Otus, Makro-Planar 2/100, Apo-Sonnar 2/135

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
gjl711
They have pills for that now you know.
Avatar
53,859 posts
Likes: 1479
Joined Aug 2006
Location: Deep in the heart of Texas
     
Jun 02, 2010 11:18 |  #2

Post an example. CA should be very low with this lens.
http://www.photozone.d​e …19-canon_85_18_5d?start=1 (external link)


Not sure why, but call me JJ.
I used to hate math but then I realised decimals have a point.
.
::Flickr:: (external link)
::Gear::

  
  LOG IN TO REPLY
tkbslc
Cream of the Crop
24,567 posts
Likes: 15
Joined Nov 2008
Location: Utah, USA
     
Jun 02, 2010 11:20 |  #3

I expected to see lots of fringing when I bought this lens based on reports, but I can't even find any on backlit subjects at f1.8 until I zoom to 100% view. So no, I don't have this problem .


Taylor
Galleries: Flickr (external link)
60D | ELPH 330 | iPhone 5s

  
  LOG IN TO REPLY
Poe
THREAD ­ STARTER
Goldmember
Avatar
1,950 posts
Likes: 13
Joined Oct 2005
Location: Modesto, CA
     
Jun 02, 2010 11:24 |  #4

gjl711 wrote in post #10288819 (external link)
Post an example. CA should be very low with this lens.
http://www.photozone.d​e …19-canon_85_18_5d?start=1 (external link)

I should be able to post some examples when I take my lunch break.

Their test shot/comparison tool show very little LoCA. From what I have seen, mine shows a lot more.



Nikon D750 | Nikon-Nikkor 14-24G, 60G Micro | SIGMA 35A, 105 OS, 24-105 OS | ZEISS Apo-Distagon 1.4/55 Otus, Makro-Planar 2/100, Apo-Sonnar 2/135

  
  LOG IN TO REPLY
CountryBoy
"Tired of Goldmember label"
Avatar
5,168 posts
Joined May 2006
Location: Okie
     
Jun 02, 2010 11:26 |  #5

Poe wrote in post #10288789 (external link)
Does anyone else find that this lens has much more purple fringing than expected even at f/2.8 or f/4?

I expected this behavior wide open and even at f/2, but it doesn't seem to be controlled at all, even at f/4.

Could the fringing be augmented by some elements out of alignment and something that Canon repair could fix? I really want to have it significantly reduced at f/2.8 and smaller without having to resort to desaturation of the purple channel which is a global image alteration in post-processing.

On some shots , it's been really bad at 1.8-2.0. But it really depends on what I was shooting. But i haven't really noticed it at 2.8 or f/4.


Hi

  
  LOG IN TO REPLY
Player9
Senior Member
658 posts
Joined Mar 2007
     
Jun 02, 2010 11:38 as a reply to  @ CountryBoy's post |  #6

I've had this lens for several years, but I'm usually only using it with studio lighting. In situations without controlled lighting, I have often noticed purple fringing at f/2.8 and wider, but only in very high contrast transition areas of a photo. Fix in PP and move on. I can't recall that I have noticed this in shots at apertures smaller than f/2.8.


60D, EF-S 10-22mm f/3.5-4.5, EF-S 18-135mm 3.5-5.6 IS, EF-S 55-250mm f/4-5.6 IS, Tamron 17-50mm f/2.8, EF 28mm f/1.8, EF 50mm f/1.8, EF-S 60mm f/2.8 macro, EF 85mm f/1.8, 430ex, 220ex, Alien Bee B400 (2), Alien Bee B800 (2)

  
  LOG IN TO REPLY
yourdoinitwrong
Goldmember
Avatar
2,394 posts
Joined Apr 2009
Location: Indiana
     
Jun 02, 2010 11:40 as a reply to  @ Player9's post |  #7

Like others have said I notice CA a lot at 1.8 and 2.0. It is much better at 2.8 to 4.0 but still shows up in high contrast shots.


7D2 w/ BG-E16, 7D w/ BG-E7, EF-S 10-22mm f/3.5-4.5, 24-105 f/4L, 70-200 f/2.8L IS II, 35 f/1.4L, 85 f/1.8
Full List

  
  LOG IN TO REPLY
Cheever
Member
156 posts
Joined Jul 2008
     
Jun 02, 2010 13:07 as a reply to  @ yourdoinitwrong's post |  #8

Go in Lightroom, and decrease purple saturation....should work well unless your subject is rocking purple.


Canon 5d mark2 | 35L 1.4 | 50L 1.2 | 85 1.8 | 100 2.8 macro | 70-200L 2.8 mark1 | ts-e 45 2.8

  
  LOG IN TO REPLY
Poe
THREAD ­ STARTER
Goldmember
Avatar
1,950 posts
Likes: 13
Joined Oct 2005
Location: Modesto, CA
     
Jun 02, 2010 13:40 |  #9

Cheever wrote in post #10289502 (external link)
Go in Lightroom, and decrease purple saturation....should work well unless your subject is rocking purple.

This changes the white balance of the entire image among other things.



Nikon D750 | Nikon-Nikkor 14-24G, 60G Micro | SIGMA 35A, 105 OS, 24-105 OS | ZEISS Apo-Distagon 1.4/55 Otus, Makro-Planar 2/100, Apo-Sonnar 2/135

  
  LOG IN TO REPLY
irishman
Goldmember
Avatar
4,098 posts
Likes: 12
Joined Jul 2007
Location: Scottsdale, AZ
     
Jun 02, 2010 14:32 |  #10

Mine was awful, especially on specular highlights and high contrast areas.


6D, G9, Sigma 50 1.4, Sigma 15mm Fisheye, Sigma 50 2.8 macro, Nikon 14-24G 2.8, Canon 16-35 2.8 II, Canon 24-105 f/4 IS, Canon 70-200 2.8 IS, tripod, lights, other stuff.

  
  LOG IN TO REPLY
bohdank
Cream of the Crop
Avatar
14,060 posts
Likes: 6
Joined Jan 2008
Location: Montreal, Canada
     
Jun 02, 2010 15:10 |  #11

Since I don't shoot chrome or barcodes or water with it, the PF rarely rears it's ugly head.


Bohdan - I may be, and probably am, completely wrong.
Gear List

Montreal Concert, Event and Portrait Photographer (external link)
Flickr (external link)

  
  LOG IN TO REPLY
toxic
Goldmember
3,498 posts
Likes: 2
Joined Nov 2008
Location: California
     
Jun 02, 2010 15:11 |  #12

On very high-contrast edges, PF is normal with the 85/1.8. PF isn't measured in CA measurements, just blue/yellow lateral CA.

Not overexposing helps a lot. If you think it's still too much, try getting it checked out or try another one.

Poe wrote in post #10289698 (external link)
This changes the white balance of the entire image among other things.

If it does, then apply it to the edges, not the entire image.




  
  LOG IN TO REPLY
bohdank
Cream of the Crop
Avatar
14,060 posts
Likes: 6
Joined Jan 2008
Location: Montreal, Canada
     
Jun 02, 2010 15:13 |  #13

:Not overexposing eliminates it, except for barcodes :lol:


Bohdan - I may be, and probably am, completely wrong.
Gear List

Montreal Concert, Event and Portrait Photographer (external link)
Flickr (external link)

  
  LOG IN TO REPLY
CountryBoy
"Tired of Goldmember label"
Avatar
5,168 posts
Joined May 2006
Location: Okie
     
Jun 02, 2010 15:18 |  #14

bohdank wrote in post #10290221 (external link)
Since I don't shoot chrome or barcodes or water with it, the PF rarely rears it's ugly head.

Mine was really bad shooting bare trees in winter. Seems like every branch had it.


Hi

  
  LOG IN TO REPLY
jrscls
Goldmember
2,935 posts
Gallery: 51 photos
Likes: 503
Joined Mar 2008
Location: Pittsburgh, PA
     
Jun 02, 2010 15:27 |  #15

I have had this lens a few times and even at f2.8 the fringing was often an issue.


Fujifilm X-H1 with Grip, X-T2, XF 16mm f/1.4 R WR, XF 23mm f/1.4 R, XF 35mm f/1.4 R, XF 56mm f/1.2 R, XF 90mm f/2 R LM WR, Flashpoint R2 Strobes/Flashes

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

18,060 views & 0 likes for this thread
Canon 85mm f/1.8 Purple Fringing
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.0forum software
version 2.0 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Summers
674 guests, 291 members online
Simultaneous users record so far is 6430, that happened on Dec 03, 2017

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.