EF 600mm L IS USM III: firmware update problem with EOS 5D IV, better use an R system camera

Just a short info for users of EF version of the current 600mm f/4 (Mk III in EF mount): if you want to update the firmware of that lens (currently 1.1.3), better use a current R system camera + adapter. Updating worked flawlessly with my R7.

Problem with a 5D4, and this may happen with other older (or all?) EF mount DSLRs: I tried to update the lens firmware with my 5D4 several times. Every time when I clicked on the lens firmware shown in the menu, its display immediately went black, top screen showed "err" and it needed a reset by removing the battery (fortunately the firmware updating of the lens did not start yet). I did follow exactly Canon's update manual, to prepare it I re-formatted a card in the camera before I copied the new lens firmware on it on my MacBook, and my 5D4 has the latest firmware (1.4.0) installed.

  • Poll Poll
How old are you, and do you support or reject the idea of a RETRO AE-1 body

What catogory do you fall into to support or reject a AE-1 Retro Camera body

  • Support Age 25 and under

    Votes: 0 0.0%
  • Support Age 26 - 40

    Votes: 3 17.6%
  • Support Age 41 - 55

    Votes: 5 29.4%
  • Support Age Over 55

    Votes: 5 29.4%
  • Bad Idea Age 25 and under

    Votes: 0 0.0%
  • Bad Idea Age 26-40

    Votes: 1 5.9%
  • Bad Idea Age 41-55

    Votes: 1 5.9%
  • Bad Idea Age Over 55

    Votes: 2 11.8%

With the talk of a RETRO Canon camera body, I think about those who are for this or opposed to the idea and what age bracket they might fall into. One side of me says that the people interested in an AE-1 Retro-style camera might skew to the older crowd that used an AE-1. Another thought is that your generation loves the look and would be behind this.

I want to start a poll to see where the age group lies.

Canon Products Win Big at iF Awards for 2025

Canon recently announced that its products won at the annual iF awards for the year 2025. Canon won both design awards and a gold award. This is the 31st consecutive year that Canon has won these awards. While the camera gear that won was interesting, it was not that surprising; what I found interesting was the semiconductor equipment winning the gold award.

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Canon: No Plans for High Resolution R1

Canon sat down with Petapixel, and the conversation came up about the R1. Will users who want more than 24MP on the flagship get their wish?


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OpticalLimits Reviews the Canon RF 28-70mm F2.8 IS STM

OpticalLimits is one of my favorite lens reviewers, going all the way back to when it was named photozone.de. Recently, they completed their review of the Canon RF 28-70mm F2.8 IS STM.

My summary: It's not often I pull out the bad sample card.... but maybe?

Canon EOS RV Image Leaks Out: The Small Mirrorless We Have Been Wanting

It seems that someone snagged a photo of a future Canon camera, with the identifier of EOS RV. It's a compact camera looking to have a similar frame as the PowerShot V1.

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  • Wow
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Canon RF Supertelephoto Lenses with built-in Extenders Appear in Latest Patent

In this patent application (2025-028297), Canon discusses super-telephoto prime lenses with built-in teleconverters. Unlike normal teleconverters, which you add to the end of the lens and the extender attaches between the lens and the camera, these insert optical elements inside the lens itself.

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Third-party LP-E6P Batteries...

...are now hitting the market from suppliers that I have purchased from in previous years (the following screen grab is from Amazon USA):
1741110425972.png

By my own lazy count I have purchased at least a couple of backup batteries (from all three of the above suppliers) for at least ten different cameras (including two point-and-shoot, three DSLR and five mirrorless Canons)...with, I guess, mostly positive results for most use cases.

Currently, the fan-less and ethernet-less grip for the R5MkII is more-or-less permanently attached to its body, mostly because of its ability to house an additional battery--if anyone has figured out why my R5MkII seems to consume power at quite rapid rates...let me know.

Weather is warming up, and in some situations I can imagine needing backup batteries for the two Canon-branded batteries that now reside inside the grip.

I found this...


...on CR but haven't seen much on the Neewer, Wasabi or Kastar versions of the LP-E6P batteries--but I'm still looking.

Of course there are worries about third-party battery usage and damage to the camera itself...so I'm a bit conservative jumping in until more reviews are available.

EDIT:

...missed this one (for the Neewer R5 batteries):

CP+ 2025 Highlights: The Cameras and Lenses of 2025

CP+, held in Yokohama, Japan, every February and early March, is the largest camera-related show that occurs now. Photokina used to be it for photography, so much so, that camera and lens releases were often released in August and early September just to get ready for the Photokina buzz. But for reasons beyond my pay grade, Photokina decided to do a series of weird moves that killed it as a trade show. RIP.

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Canon is Number 1 – Again and Again

Canon is once again number one in the industry. It has held this rank since 2003, and there have been years when Canon has come close to losing it. Around the D3 and D200, Nikon threatened Canon’s dominance with strong sales, but Canon never relinquished the lead.

Best Canon R Body for High ISO ?

I am currently using the R5 and R5m2, both are excellent cameras but they’re not that exceptional at higher ISO.

Which R body is the best at higher ISO?

My main system is Canon RF, that’s why I would rather stay with Canon.

Or should I rather get the 50 and 85 1.2 Primes?, I already use the 28-70/2 and the 24-105/2.8 Zooms, and TBH I always prefer Zooms to primes.

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