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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 13 Jun 2009 (Saturday) 10:13
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24-70 L (Calibration needed?)

 
Livinthalife
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Jun 13, 2009 10:13 |  #1

Well I got my 24-70 L and been finding little issues (mostly my own as I am examining too much). Well anyways, after a shoot, I noticed a little CA.


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This is a little below center of the image. Is this usual? As my Tammy did not do this at all, or am I due in for calibration. If so, is it going to cost me (bought at BH a bout a month and a half ago)?

Please let me know what you recommend. Outside of the 100% crop zone ,this is NOT noticeable. I only noticed this when erasing the dirt from the boy's foot. Other wise, I may have never known.

-Andy-

  
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mikekelley
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Jun 13, 2009 10:21 |  #2

Can we see exif and the full version?


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bohdank
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Jun 13, 2009 10:33 |  #3

Best that other 24-70 owners chime in. The red fringe is certainly there and could be easily removed in PP but, I have no idea, whether this amount of CA is normal.


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adam ­ LC
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Jun 13, 2009 10:36 |  #4

When did you get it? I would take it back if its possible. I dont get anything like that with my lens.


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cdifoto
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Jun 13, 2009 10:39 |  #5

I'm not sure if mine does that or not. It hasn't jumped out at me and I haven't really looked for it. Sending it in won't cost you anything except shipping. That's what the warranty is for.


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smorter
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Jun 13, 2009 10:52 |  #6

Did you use flash? It could even be motion blur from the ambient exposure


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Livinthalife
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Jun 13, 2009 11:06 |  #7

Here is the picture at 800px wide.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


Here is the Original image
http://www.atgphotos.c​om …A6hM#562479130_​CA6hM-O-LB (external link)

Exif
File Name IMG_2760.CR2
Camera Model Canon EOS 30D
Shooting Date/Time 5/2/2009 7:39:57 PM
Shooting Mode Aperture-Priority AE
Tv( Shutter Speed ) 1/640
Av( Aperture Value ) 2.8
Metering Mode Evaluative Metering
Exposure Compensation 0
ISO Speed 100
Lens EF24-70mm f/2.8L USM
Focal Length 70.0 mm
Image Size 3504x2336
Image Quality RAW
Flash Off

-Andy-

  
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Livinthalife
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Jun 13, 2009 11:07 |  #8

Well, I have never sent anything into Canon. so I guess it would be a first for everything. Surely shipping will have a nice charge with the grand of insurance! (or maybe just run on my insurance!)


-Andy-

  
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Super-Nicko
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Jun 13, 2009 11:16 |  #9

I just shot some today with 24-70 - had some bright highlights--- got a tiny bit of CA - and my shots were at f5

some red around skin and blue around clothing -
sorry cant post shot - dead tired - been shooting and doing initial edits - and editing a quick 5d2 video for my friends band...

Your ca looks bright - but the image looks quite red aswell - you can see it in the shadows of face, between toes and lips..


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cdifoto
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Jun 13, 2009 11:18 |  #10

Whatever you do, pack it yourself. Having a UPS store do it for you is like committing murder just so Bubba can have his way with you.


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summerwind4
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Jun 13, 2009 11:26 as a reply to  @ cdifoto's post |  #11

i've had 2 copies of this lens....the first one i bought when they first came out.......i literally hated it. soft shots almost all the time, and red fringe in every shot when viewed at 100%. Canon service could do nothing to make it better.

the second copy i was much more careful about picking, and i went thru 3 copies at my local shop to find one that was perfect. it had no Red,Blue or any CA at any focal length or aperture setting regardless of lighting conditions.

later the focus ring became loose, sent it to canon, they fixed it, but i had to send it in again to have them remove all the new dirt they deposited during the first repair. lens was perfect after that, but after buying the 24-105L i never used the 24-70 again.
i think the 24-70 is the most overhyped lens in Canons lineup, and you can't always find a perfect one.

sending yours in may or may not (most likely not) end up with you being a happy camper.
something is on the outside of spec here (lens finish most likely) and Canon service will not be able to repair such an item.

is excahnge an option?


  
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Livinthalife
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Jun 13, 2009 11:38 |  #12

I would have to call BH an see if they can exchange, they may honor that. So what is everyone's recommendation, return and exchange? Calibration?


-Andy-

  
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cdifoto
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Jun 13, 2009 11:53 |  #13

Shoot more and see if it's a recurring problem first. Could be a fluke and/or a result of overcooked reds in your image. If you can replicate it, send it for warranty repair (you have a year from the date of purchase). I've always felt it's better to fix the one you have than to play russian roulette with another (of anything, not just this lens, other lenses or photographic kit in general).


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Livinthalife
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Jun 13, 2009 15:49 |  #14

Thanks CDI. I will try that first then. Got plenty more shots to review.


-Andy-

  
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AlanU
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Jun 13, 2009 17:19 |  #15

Try taking a photo at 24-35mm wideopen with your subjects 5-10 feet away. See if you get backfocus. I dont commonly use that focal length with my brick but I have had occasional back focus. It seems to be a very common problem with the brick. Calibration seems to be futile to correct this problem.

If its a month and a half old more than likely you'll only be able to get it calibrated for free. Start pixel peeping for sharpness wideopen from short to long end.


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24-70 L (Calibration needed?)
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