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Canon 24-105L flare & ghost-images problem

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I understood you maybe wrong. The company which repairs for Canon is not Canon itself. Therefore I related t them as a "third" party. Canon put itself totally aside this business. This doesn't give them better reputation, to my idea.

Unfortunately I didn't hear about the problems with the 580EX, even not after informing here about it at that time.
 
Dear Amit,

Yes it is unfortunate that Canon does not repair cameras themselves in your area. It is common to find third party service providers giving unsatisfactory service.
Anyway hope your lens will be repaired soon.
I'll dig some infos on the 580EX issues for you.
Cheers
 
Indeed, it's not a very great advantage when repairs are given further. What Canon themselves could advise me as response on my complaint that the former "repair" last 31 days, was: "Buy a reserve lens"...

I followed this advice with pain, because I really don't think that repairs should last as long and above that, it is absolutely useless to keep so much glass, if unnecessary.

You might be surprised, but precisely because of the failure of Canon to repair my lens correctly, I chose to buy a Tamron lens (18-250), which I am very satisfy with, so far at least ;-)
 
To suggest that you buy a backup lens to solve the problem. The earlier version lenses had this inherent issue which were rectified in oct/nov of 2006.

Over here we have a strong consumer laws that allows consumers to get a better resolution of issues.

As far as the 580EX goes most of the issues were rectified by upgraded firmware and new main board replacement.
Cheers
 
It looks like Canon has now too strong position on the photography and especially on the camera market. I did help them to come so far by buying their articles. Nevertheless, it doesn't justify this attitude.

I have never seen any firmware regarding upgrade towards the 580EX flashgun. Do you know where I can find it?
 
Hopefully Canon will rectify your problem free of charge. For an expensive lens this one is a lemon.
 
The first time, when nothing at all ((cleaning...) is done, they charged me 47.60 Euro.
I am curious how they will treat the second handling...
 
Amit Bar said:
I have never seen any firmware regarding upgrade towards the 580EX
flashgun. Do you know where I can find it?
Click to expand...
Unfortunately this involves circuit board replacement and recalibration and can only be done by canon service.

Cheers
 
Well, after sending my flashgun three times there and every time receiving it untouched back, I stopped doing so. The problem remains irritating models (and me) in the studio. Because I couldn't miss it, I had to buy a second 580 EX flashgun. One more evidence of failure of this repair-service of Canon. A shame for them as well as for Canon.

By the way, I tried to inform two and half years ago in this forum, without results.
Please see:
http://forums.dpreview.com/forums/readflat.asp?forum=1010&thread=16865751
 
Dear colleagues,

Today I have got finally, after more than three weeks, my lens back from the Canon lab. The short description of reparation said that some parts were added, named "lens ass'y 5th group". General cleaning and general inspection followed and the lens is "working according specification".
Well, I was curious if this time they could handle it.
The results can be viewed at:
http://www.facebook.com/album.php?aid=33303&l=00e30&id=672884677
Unnecessary to say how disappointed I am. It's unbelievable!

Amit
 
Canon service in the Netherlands is close to non-existent.

I had front focus on my DRebel/300D and Canon (EBASS I think) changed it into a truly massive backfocus. I mean like 5x DOF backfocus. It is absolutely impossible that this is the result of any Canon-approved calibration. It was horrible. Soon after the submirror guidance pin broke so the camera was again with them with the request to fix the focus. It came back unchanged.

I have invested too much in Canon gear to change to another brand now, but I'm keeping my fingers crossed that I never need another (warranty or other) repair as you just confirmed my experience: they seem to have absolutely no clue how to fix Canon equipment.
Amit Bar said:
Dear colleagues,

Today I have got finally, after more than three weeks, my lens back
from the Canon lab. The short description of reparation said that
some parts were added, named "lens ass'y 5th group". General cleaning
and general inspection followed and the lens is "working according
specification".
Well, I was curious if this time they could handle it.
The results can be viewed at:
http://www.facebook.com/album.php?aid=33303&l=00e30&id=672884677
Unnecessary to say how disappointed I am. It's unbelievable!

Amit
Click to expand...
--
Slowly learning to use the 450D and and the Canon G6.
Public pictures at http://debra.zenfolio.com/ .
 
this thread and I'm wondering: Does anyone know of another 'actual' Canon service center in Europe, to which Amit can send this lens?

Obviously, the "techs" at his current service center don't know their a** from third base.

Hang in there, Amit, someone here can surely help you out!
--
Bos
 
Well, I am totally not surprised, as I have had already a bitter experience with them.
I do wonder why Canon still support them up to now.

Canon Nederland told me, after I insisted to hear it, that there is another address for repairs in The Netherlands.
This is:
Digital Service point
Hulsenweg 4
6031 SP Nederweert
Tel 0495 622621

Please don't ask me whether they are better than the "experts" at ETB-Ass.

For me it is the same problem: you are not modifying the whole gear because of one or two problems. But...keeping the fingers crossed is maybe the only method to get it so far.
 
Try the other dutch service centre first! But if all fails i can at least give you the adresses of the danish service centres for Canon:

http://www.cav.dk/

C/AV Visual Communication A/S
Høffdingsvej 36
2500 Valby

Or

C/AV Visual Communication A/S
Jens Juuls Vej 20
8260 Viby J

Tlf: 70 12 15 00
Fax: 33 31 47 00
Email: [email protected]

From what I've heard they do a good job but can be a bit slow.
You could allways try and email or call them!

--

Brian
http://www.pbase.com/thelund
 
Thank you for your tip. Well, the Dutch service is not fast either, as the first "repair" (just cleaning...) last 31 days. The second one - more then three weeks. Even then, it is not yet in order...
 
You must believe it - here is the explanation of the technician from the Canon lab to my recent complaint after their "repair":

"In photos where the sun shines in the lens (or just outside the picture) diaphragm spot are visible. This is something that appears on each lens, however the one lens has more trouble of it than the other. It is therefore no malfunctioning, it belongs to the character of the lens. The only solution is ensure that there no direct sunlight falls in the lens".

Photographing about 27 years with several SLR lenses of Minolta, Nikon and since 1991 Canon, I should hear this finally from the expert...

Behavior experts insists that it is healthier to laugh than crying.
 
there's nothing they can do to reduce flare, unless your lens has significant misalignment issue. It's about lens design, coating and anti-glare measures (such as non reflective paint and built in flare cutter. It is what it is, no tech and go in there and do some magic to reduce lens flare. You just need to be cautious when you shoot with this lens. I've avoided it 99% of the time but very occasionally I got shots like yours if the sun is right outside the frame somewhere.

Including the sun or strong spotlight IN the frame normally isn't a problem. Worst case happens when the sun is outside, but you should be able to see the flare in the viewfinder and adjust your shooting direction.
Max
Amit Bar said:
About a year ago I bought this 24-105 lens, which is not from the
first UT edition but a UV editon, which is more new. Already in the
beginning I noticed a tiny flare-problem, but now it turned to be
very, very bad. I can't work with this lens anymore with sun anywhere
for me. It is not only with the sun in picture, but even not 45
degrees off the sun. I work with the original lens-hood and normally
also with UV filter. The service-centre of Canon in The Netherlands
"repaired” the lens, but the following images were taken there after:
http://www.facebook.com/album.php?aid=30404&l=99868&id=672884677
Because this proves the contrary, I sent the lens back to the
service-centre. Nevertheless, they seems to claim there that this
flare is very normal! I hardly can believe it.
Here I must mention that these images were taken without the UV filter.
Who knows what's going on here?
Many thanks in advance for your good advice.
Amit
Click to expand...
 
Dear Max,

I do not agree with you. I am using lenses of different brands for many years, but this never happened before. To my opinion, when you've being charged about 800 Euro for a L lens, you may expect better resistance to flare in such circumstances.
 
Now that Canon-lab claims that the lens has been correctly repaired, I took it to the field to compare it with the Tamron 18-250. I had to buy the Tamron lens because the repair last so long. Though the Tamron has much larger focal length, it is smaller and lighter, and cost less than half of the Canon 24-105L...

The Tamron lens does suffer from flare and ghost-images too, but much less than the Canon, in any case this lens of mine. Worst of all, the Canon lens has great difficulty to focus under these circumstances.

Please see the results yourself to judge whether the repair have been executed as ought to be.
http://www.facebook.com/album.php?aid=33577&l=82846&id=672884677

If this is the "normal" performance of the Canon lens, then I am ashamed that I bought it. Be warned!
 
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