opso1
Posts: 430
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Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 8:41 am

I've just bought a new CANON 100-400mm 4-5.6 IS lens thinking that I would now take great photos (never mind- I can dream on!), but every photo I take at over 300mm is blurred too badly to even bother keeping- any hints and tips about what I am doing wrong would be greatly appreciated. I use it with a CANON 30D.

OPSO1
 
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jumbojim747
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 8:46 am

What f number are you using
Although its a bit softer at over 300 it shouldn't be blurred
Maybe your f stop is not correct for that distance try setting it at f8 that should cover the distance without blurr.
I have had this lens for years and i have not had blur problems
Cheers
On a wing and a prayer
 
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Fiveholer
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 11:08 am

IS on? Big grin

Danny (100-400L IS Owner)
Bring back Bethune!
 
SNATH
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 11:34 am

According to this:

http://www.the-digital-picture.com/R...-4.5-5.6-L-IS-USM-Lens-Review.aspx

(small extract) Considering the focal length range of this lens, the sharpness delivered is simply excellent.

Is it totally out of the question that you got a faulty lens? Why don't you also get in touch with Canon for advice?

Tony
Nikon: we don't want more pixels, we want better pixels.
 
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walter2222
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 3:51 pm

Hi Opso1,

Maybe you can find something in here:

http://www.scramble.nl/forum/viewtopic.php?t=31153

The 100-400L IS USM is a nice piece of equipment, but you also need some time to practise with it and get used to it...

Quoting Opso1 (Thread starter):
every photo I take at over 300mm is blurred too badly to even bother keeping

What were your shooting conditions (Av, Tv, ISO,IS-mode1, IS-mode2, IS-off, handheld, tripod,...)?

PS: Maybe the fastest solution is to ask another photographer to take some shots with your lens/camera...

Best regards,

Walter
Canon 347d mkII ;-) - EFS10-22mm f/3.5-4.5 USM - EFS18-55mm - EF28-105mm f3.5/4.5 - EF100-400mm f4.5-5.6l IS USM - ...
 
fergulmcc
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 5:18 pm

Quoting Opso1 (Thread starter):
but every photo I take at over 300mm is blurred too badly to even bother keeping

Keep an eye on your shutter speed as well, if you focal length is increasing, sometimes what happens is your shutter speed will decrease because your aperture is remaining constant, that's if you are using Aperture priority. If so then that may explaing your blury shots because your shutter is decreasing at the higher focal length to compensate for the less light that is now entering your sensor for the same aperture. Try and up your shutter speed and see what results you have. If they are still blury at a high shutter speed then ask another photographer to try out your lens. When posting please give more info, it helps to see what the problem may be, i.e. give more info from your Exif data of your shots.

Hope that helps

Take care

Fergul  sun 
Zambian Airways, Where the Eagles fly free!!
 
IL76
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 7:16 pm

Before getting into all the aperture/shutter tests, mount it on a tripod or lie it down and take a picture of anything (a parked car, a house, etc.) and check the sharpness. That will immediately show if the the lens is at fault or if you are.
 
mrk25
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 8:51 pm

Is the minimum focusing distance switch set to >6.5M ? I accidently took a bunch of wildlife shots at 400mm with the switch on 1.8 and had to bin them all.
 
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jumbojim747
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RE: Canon 100-400mm Is Lens Problems

Fri Jun 08, 2007 9:07 pm

Quoting Mrk25 (Reply 7):
Is the minimum focusing distance switch set to >6.5M ? I accidently took a bunch of wildlife shots at 400mm with the switch on 1.8 and had to bin them all.

Thats only focusing distance that the lens will go for.
If his getting blurry shots then either his not getting the auto focus to lock on or the object is not in the right aperture corridor (depth of field)

Quoting IL76 (Reply 6):
Before getting into all the aperture/shutter tests, mount it on a tripod or lie it down and take a picture of anything (a parked car, a house, etc.) and check the sharpness. That will immediately show if the the lens is at fault or if you are.

That would be a good idea
good luck

[Edited 2007-06-08 14:10:07]
On a wing and a prayer
 
wagz
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RE: Canon 100-400mm Is Lens Problems

Sat Jun 09, 2007 5:09 am

FINALLY! I now know I'm not alone and I'm not insane.

I also own a 30D and I bought a 100-400 last year and had the same exact issues. Even traded it for a new one from my dealer (B&H) to no avail. Wound up selling recently to fund a new PC. My father also was shooting with the same combo of body/lens and had the same exact problems. He also traded his lens for a new one and it didn't help.

For the record, I also own a 70-200 F2.8L IS. That lens is a tank. Thing never ceases to amaze me what it can do, especially in low light coupled with the superb high ISOgrain control on the 30D.

Before selling my 100-400, I tested it on an old 300D body I had laying around, and the photos were fine! Despite what most of you may think, or will try to tell me or the original poster about what we're doing wrong or whatever, I will always believe there is a compatibility issue between the 100-400 and the 30D. I wouldn't be surprised. The 100-400 is several years old (at least 4 years old?) and Canon may have made some changes to the interaction between lens and body with this newer generation of bodies.

For me the proof is undeniable. 4 copies of the lens between 2 bodies and several "repair" trips back to Canon USA with no change in results. Stick it on a 300D and it works just fine? Now I finally see someone else with the same situation as me. Too much coincidence going on here to make me rhink there isn't some genuine issue with this lens/body combo.

Joe Wagner - KPHL

[Edited 2007-06-08 22:10:39]
I think Big Foot is blurry, Its not the photographers fault. Theres a large out of focus monster roaming the countryside
 
aero145
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RE: Canon 100-400mm Is Lens Problems

Sat Jun 09, 2007 5:26 am

It seems that you have to bin the 30D, fellas.

 stirthepot 

Good ol' 20D does it!  angel 
 
spencer
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RE: Canon 100-400mm Is Lens Problems

Sat Jun 09, 2007 5:52 am

I have the 30D and 100-400. Both work extremely well, no conflicts.
Spencer.
EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM
 
aviopic
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RE: Canon 100-400mm Is Lens Problems

Sat Jun 09, 2007 6:08 am

This might come down to a Firmware issue.
Do you have the latest version installed ?
http://www.canon.co.jp/Imaging/eos30d/eos30d_firmware-e.html
The truth lives in one’s mind, it doesn’t really exist
 
stu1978
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RE: Canon 100-400mm Is Lens Problems

Sun Jun 10, 2007 4:20 am

Yeah i used to have a dodgy 100-400 ........everything above the 300mm would come out fuzzy and majorly blurry compared to others that I tryed .............

There were four other people with the 100-400 and all tested my lens on there bodys etc and there lens on mine............all said my was faulty.

yet there lens on my body ...........everything OK.

Took lens to get repaired at Fixation in London ...........tryed to explain the problem .........got it fixed ..........they blamed the IS and needed re calibrating ...........had it done ............went out and tryed again and still same results........deceide to cut my luck and sell it and get a new one ..........

As yet everything seems OK.

That is on a 30D also
 
cschleic
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Joined: Sat Feb 16, 2002 10:47 pm

RE: Canon 100-400mm Is Lens Problems

Mon Jun 11, 2007 1:15 am

Quoting IL76 (Reply 6):
Before getting into all the aperture/shutter tests, mount it on a tripod or lie it down and take a picture of anything (a parked car, a house, etc.) and check the sharpness. That will immediately show if the the lens is at fault or if you are.

If you try this, make sure IS is turned off (as any photog should when using an IS lens on a tripod or other solid surface). Otherwise it'll look for motion and the IS ends up drifting around, perhaps creating a blurred image.

Although it's a new lens, make sure all the contacts on the lens and camera are clean. I had a problem with my 100-400 auto focus not activating all the time...after cleaning contacts that problem ended.
 
F27
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RE: Canon 100-400mm Is Lens Problems

Sun Jun 17, 2007 8:27 pm

Do you have the auto focus turned on. I have had one for over 7 years and it still sings as good as the day i got it.
 
cschleic
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Joined: Sat Feb 16, 2002 10:47 pm

RE: Canon 100-400mm Is Lens Problems

Mon Jun 18, 2007 1:07 am

Quoting F27 (Reply 15):
Do you have the auto focus turned on. I have had one for over 7 years and it still sings as good as the day i got it

Yes, that was the thing...it would try but not get into focus.
 
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Jofa
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RE: Canon 100-400mm Is Lens Problems

Tue Jun 19, 2007 10:22 pm

Bought a new 30D and i got blurry results with my 100-400, and 70-200L IS AND 17-40. I hope it's a back/front focus issue like they predicted when i left it for service. Also serviced my 100-400 due to ever since i bought it new it has been slightly soft on the right side. Even if rest of image was sharp, the right side was slighly soft. I hope they can adjust that.

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