Share article:
Share article:

Canon 5D with 24-105mm F/4L IS @ F/16

Photograph Courtesy Bob Kulon

In early October ’05 Canon started shipping theEF 24-105mm f/4L ISlens. I had tested a pre-production sample and found it to be not only excellent optically but also a most convenient and usable lens, especially for street shooting. Two early purchasers that write for this site published reviews of the lens – one byMark Segaland the other byBill Caulfield-Browne.

I purchased a 24-105mm for myself as soon as it became available, and took it with me on a two week shoot in China later that month. I took a couple of thousand frames with it, both on the 5D and the 1Ds MKII, and I have nothing but good things to say about it.

But, as soon as I returned from China in late October I read that Canon USA had announced that there was a problem with early production lenses, and that these early lenses were being recalled for repair. You can find out more about this recall notice on theCanon USA web site.

The curious thing though is that three other members of my China expedition were also using the 24-105mm, and none of us had experienced this flare problem. I have subsequently spoken with at least a half dozen other people who own early samples of this lens (Canon stopped shipping them once the problem was discovered, and has recalled inventory from dealers), and none have seen a flare problem either.

But then on Nov 6,Bob Kulonwas one of the members of myBrickworks Workshopin Toronto, and he was using the 24-105mm on the shoot. He saw a serious flare problem on a number of his frames, and one of these is shown above. It is the green semi-circle in the upper-right of frame. The white light on the left of frame is a sunbeam coming through the roof of the abandoned factory.

Most interestingly, on Canon’s web site they state, "The flare is most obvious in the wide zoom and wide aperture settings," yet Bob’s photograph was taken at a focal length of 70mm, and an aperture of f/16.

________________________________________________________________________

It’s Real

So. The problem is real after all, and is not simply due to an over-abundance of caution on Canon’s part.

If you own one of these lenses with an effected control and serial number, as shown on Canon’s information page, then you really should send the lens in for repair. To my knowledge this repair program is in effect in both the US and Canada. Elsewhere you’ll have to contact your local Canon agent or representatives, or the retailer that you purchased the lens from.

As to the actual nature of the repair, that remains a mystery, and is not mentioned on the Canon web site. Since the repairs will only start after Nov 14, I would assume that some parts are required.

I have to say that it would be reassuring if Canon would explain the nature of the repair. If it’s simply the replacement of a missing baffle, or some black flocking, that’s one thing. If it means optical disassembly, it’s another. Several readers have indicated concern at having their expensive precision lens worked on outside of the factory environment.

I intend on having my lens repaired by Canon Canada. If and as I find out more I’ll let you know.

Michael

Read this story and all the best stories on The Luminous Landscape

The author has made this story available to Luminous Landscape members only. Upgrade to get instant access to this story and other benefits available only to members.

Why choose us?

Luminous-Landscape is a membership site. Our website contains over 5300 articles on almost every topic, camera, lens and printer you can imagine. Our membership model is simple, just $2 a month ($24.00 USD a year). This $24 gains you access to a wealth of information including all our past and future video tutorials on such topics as Lightroom, Capture One, Printing, file management and dozens of interviews and travel videos.

  • New Articles every few days
  • All original content found nowhere else on the web
  • No Pop Up Google Sense ads – Our advertisers are photo related
  • Download/stream video to any device
  • NEW videos monthly
  • Top well-known photographer contributors
  • Posts from industry leaders
  • Speciality Photography Workshops
  • Mobile device scalable
  • Exclusive video interviews
  • Special vendor offers for members
  • Hands On Product reviews
  • FREE – User Forum. One of the most read user forums on the internet
  • Access to our community Buy and Sell pages; for members only.
Share article:
Michael Reichmann is the founder of the Luminous Landscape. Michael passed away in May 2016. Since its inception in 1999 LuLa has become the world's largest site devoted to the art, craft, and technology of photography. Each month more than one million people from every country on the globe visit LuLa.
See all articles by this author

You may also like

ricoh GR IV
Camera & Technology

Ricoh GR IV: Is Portability Worth $1,500?

The truth about Ricoh's latest pocket rocket: the GR IV succeeds at everything it tries to do, but refuses to give what most photographers want in 2025. 
Jon Swindall

Jon Swindall

·

September 28, 2025

·

10 minutes read


image
Camera & Technology

Panasonic Lumix S 100-500mm f/5-7.1 O.I.S.: Compact Telephoto Power

Panasonic's 100-500mm telephoto zoom brings professional wildlife and sports capabilities to the L-mount system.
Jon Swindall

Jon Swindall

·

September 26, 2025

·

4 minutes read