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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 15 Feb 2014 (Saturday) 13:31
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Purple-Fringing/CA [Canon 85/1.8]

 
booju
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Feb 15, 2014 13:31 |  #1

Thinking about this lens for my XSi...

Is this a MAJOR problem on this lens?

I like to shoot full frame in-camera...I'd like to hear from those who have or have had this lens....pros/cons???

Thanks!




  
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Left ­ Handed ­ Brisket
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Feb 15, 2014 13:43 |  #2

have not had a problem with it.

never ever.


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KirkS518
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Feb 15, 2014 13:53 |  #3

booju wrote in post #16691535 (external link)
Thinking about this lens for my XSi...

Is this a MAJOR problem on this lens?

I like to shoot full frame in-camera...I'd like to hear from those who have or have had this lens....pros/cons???

Thanks!

It's the reason I bought the 100mm, and (almost) never use the 85/1.8. It's a matter of how much PP you're willing to accept as reasonable to do with just about every image. My tolerances are low, so, YMMV.


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gasrocks
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Feb 15, 2014 16:01 |  #4

Going to depend on subject, light and situation how much you see that you do not like. Perhaps none.


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BrickR
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Feb 15, 2014 16:04 |  #5

Do you shoot in a lot of high contrast lighting situations that would make it matter?
No: Get it.
Yes: Get the 100f2.
Go out, shoot, and have fun.


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Left ­ Handed ­ Brisket
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Feb 15, 2014 16:49 as a reply to  @ BrickR's post |  #6

One hundred percent crop 85 and XSi no lens correction:

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KirkS518
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Feb 15, 2014 17:34 |  #7

hes gone wrote in post #16691942 (external link)
=he's gone;16691942]One hundred percent crop 85 and XSi no lens correction:

What f/stop were you at? Try that picture at f/1.8 - f/2.8, and it'll need PP to look like that.

It's a very good lens, but when it's shot wide open, or close to it, the CA iss too much for me.

It's a 1.8 lens, and that's part of the reason I bought it, so I'd like to be able to shoot it at 1.8 without having to fix things just because I shot at 1.8.


If steroids are illegal for athletes, should PS be illegal for models?
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gnome ­ chompski
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Feb 15, 2014 17:57 |  #8

yes, its there but its pretty situation dependent.


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Feb 15, 2014 19:53 |  #9

KirkS518 wrote in post #16692052 (external link)
What f/stop were you at? Try that picture at f/1.8 - f/2.8, and it'll need PP to look like that.

It's a very good lens, but when it's shot wide open, or close to it, the CA iss too much for me.

It's a 1.8 lens, and that's part of the reason I bought it, so I'd like to be able to shoot it at 1.8 without having to fix things just because I shot at 1.8.

That one is at f/4 but I have used the lens while doing a lot of concert photography. Under harsh spotlights and usually 2-2.8 it is no worse than the above.

I've shot hundreds, maybe thousands of images under 2.8 and still stick by this lens as a huge value and quality addition to most any bag. I bought the lens new three or four years ago. I don't know if it is just variation from one copy to the next, or maybe Canon changed something on the latest versions, but this one is a keeper.


PSA: The above post may contain sarcasm, reply at your own risk | Not in gear database: Auto Sears 50mm 2.0 / 3x CL-360, Nikon SB-28, SunPak auto 322 D, Minolta 20

  
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Abu ­ Mahendra
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Feb 15, 2014 20:03 |  #10
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booju wrote in post #16691535 (external link)
Thinking about this lens for my XSi...

Is this a MAJOR problem on this lens?

I like to shoot full frame in-camera...I'd like to hear from those who have or have had this lens....pros/cons???

Thanks!

Is it a good value? Yes
Can you get great shots with it? Yes
Does it suffer from PF? Yes
Is it annoying and objectionable? It was to me, so I sold the lens.
Does the 100F2 have less PF? Yes. But it was still too much for my tastes so I decided not to buy it after testing it in the store.

Try this. Go into a store and ask to test the 85F1.8 and 100F2. Shoot the lens box, the part with the black letters against white background, wide open. You'll see the PF right away.

You want F2 or thereabouts without objectionable PF in that focal range? You'll have to pay to play, the 85L or the 135L. Or the 100L if you are willing to trade f/2 (and PF) for f/2.8, IS and Macro (and no PF).




  
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PH68
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Feb 16, 2014 04:15 |  #11

I've used the EF100 f/2
CA could be bloody annoying if shooting at f/2 or f/2.8
LR usually went some way to solving it, but not always.

Shoot at f/4 or something and it was great with no problems.

By comparison I've also used the EF200L f/2.8 mkii, and that had zero CA.


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jefzor
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Feb 17, 2014 00:21 as a reply to  @ BrickR's post |  #12

As far as I can understand, you're planning to just shoot jpeg and be done? In that case, the "you can just fix it in post" argument doesn't really count.

If you like to shoot subjects in full sun at 2PM in the summer, then you'll see purple fringing issues. In situations with more flattering light, it doesn't really show. I'm guessing I'm having PF issues in about 5% of my shots.

I always pick your lens by focal length. I don't know if the 100 is better, but if you pick it, it should be because you want a slightly longer focal length than 85, not because some site said it was sharper or had less PF or whatever. All in all, the 85 is a great lens.


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nightcat
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Feb 17, 2014 08:06 |  #13

This is why I purchased the 100mm f2, and I'm very happy with it. I like the extra length and for me, the bokeh is smoother. I usually use it at 2.2, and I don't have CA issues. I agree with PH68 about the 200mm 2.8. Great lens with no CA. Try to set up some comparison shots between your 85mm 1.8 and a 100mm f2.




  
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samefly
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Apr 18, 2014 22:42 as a reply to  @ nightcat's post |  #14

I had two different copies of the 85mm and both had horrible fringing/CA. The auto focus is unbelievable fast and silent. When you're not getting killed by fringing/CA the image quality is great. I just couldn't deal with the fringing. You can often remove it but a lot of times there was so much that it ruined photos. The fringing was so bad that after finally removing it there was this weird white line around the subject or wherever the fringing occurred.

Personally, when I buy a fast lens and can't even shoot at 2.8 there's a problem. I hate when people say "well just stop down to whatever" if you have to do that than you might as well not buy a lens that can go faster. It's like buying a sports car and they tell you "well it's good as long as you don't go over 60mph" What? No.


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FEChariot
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Apr 19, 2014 01:40 as a reply to  @ samefly's post |  #15

It's there. I have gotten pretty good with the desaturation PS trick though. However given the alternatives, it's still a lot of bang for the buck. The L is slow focusing which kills it for me trying to chase the kids around. I wish there was a local store that carried Sigma so I could test an 85/1.4 out to see if that was more my forte. It would be nice seeing a 85 Art and a 85/1.8 IS introduced soon though.


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Purple-Fringing/CA [Canon 85/1.8]
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