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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 13 Nov 2013 (Wednesday) 06:58
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Big flare issues with my 17-40L

 
Bonbridge
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Nov 13, 2013 06:58 |  #1

It is almost impossible to shoot this lens in the nighttime for me.

IMAGE: http://oi39.tinypic.com/jrpk6p.jpg

IMAGE: http://oi43.tinypic.com/316rprn.jpg

I know what caused this problem...

I bought this lens really cheap because it had a scratch on the front element. I was fine with that, but I didn't know it turned out in such flare disaster.

Lots of (commissioned) pics are worthless now. :(

In the daytime I have no problems at all with the lens. I guess I have to wait for the new 14-24 or 16-50 IS :D

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macaron95
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Nov 13, 2013 07:48 |  #2

no issues on mine for night shots


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Sirrith
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Nov 13, 2013 07:48 |  #3

What does the scratch look like?


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Bonbridge
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Nov 13, 2013 08:13 |  #4

IMAGE: http://oi40.tinypic.com/2rp8ro4.jpg

5DII + 6D | 16-35/4.0L IS | Σ35/1.4A | 40/2.8 | Σ85/1.4A | 85/1.2L II | 70-200/2.8L IS II
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KirkS518
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Nov 13, 2013 08:20 |  #5

Take a black sharpie or marker, and fill in the scratch with the marker. It *should* reduce or eliminate the flaring.


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Invertalon
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Nov 13, 2013 11:01 |  #6

Hmm, my 17-40L is very flare resistant. I would guess it is due to that scratch honestly. Fill it in with a sharpie as mentioned above or send to Canon to get the element replaced maybe. They should be able to give you a price over the phone since you know exactly what you want.


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PH68
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Nov 13, 2013 11:55 |  #7

Lens hood?


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blanex1
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Nov 13, 2013 12:10 |  #8

mine works fine,try a lens hood,that scratch is in a real bad spot and my gess is that's your problem,you may have to replace the glass!it's not going to be cheap ether,best of luck to you.


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liquefied
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Nov 13, 2013 12:17 |  #9

PH68 wrote in post #16448535 (external link)
Lens hood?

A hood will do nothing if the bright lights causing the flares are in the frame.



  
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JeffreyG
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Nov 13, 2013 13:32 |  #10

The 17-40L is generall quite good for flare. So is the 16-35 II. They will both do 'some' ghosting, but neither will typically have any problem with veiling flare and both tend to be reasonable for ghosts.

I think you problem is the scratch, as hard as it is to believe that such a tiny scratch is causing so much trouble. Try the suggested trick with a marker, and if it fails just sell this lens off and get another one. Seriously, you do not need a 14-24 or whatever. You need a normal 17-40.

Here are links to a couple of shots with the 16-35 that have flare potential, in my recollection the 17-40 is quite similar for flare.

First one in particular has a 'typical' ghost.

http://www.flickr.com …/in/set-72157635421615720 (external link)
http://www.flickr.com …/in/set-72157635421615720 (external link)


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Madweasel
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Nov 13, 2013 16:04 |  #11

That first shot looks to me like there's dust or dirt on (or possibly in) the lens. Not so much the second one. Bright lights against a dark background is a test for any lens, and you have to make sure it's as clean as possible.


Mark.

  
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kawi_200
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Nov 13, 2013 18:41 |  #12

Invertalon wrote in post #16448393 (external link)
Hmm, my 17-40L is very flare resistant.

Same here. I've never noticed flare with mine.


5D4 | 8-15L | 28-135mm f/3.5-5.6 IS | 24L II | 40mm pancake | 100L IS | 70-200mm f/2.8L IS mk2 | 400mm f/4 DO IS

  
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tat3406
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Nov 13, 2013 19:23 |  #13

Have put filter on? sometime I have flare when filter on.


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Big flare issues with my 17-40L
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