why doesn't this 40mm pancake issue get more attention?

GregoryF wrote in post #14774838
Probably because it is a Canon. If it was a third party lens, it would suddenly be a huge issue.

DreDaze wrote in post #14774904
because it's cheap?

Valencia Photography wrote in post #14775319
Because it's such a new lens. And there has been so much hype with the new mirrorless cameras and slim lenses. Same deal with iPhones and such. The problems get downplayed.

the problem lies in a mixture here somewhere. IF I had the issue, it would be like the sticky AF of my 50 1.4, which I absolutely dread using... dread so much that I got the 1.2

I've missed a few moments with the sticky AF for sure.

Invertalon wrote in post #14775247
I have used my pancake quite a bit and yet to have this issue at all. Mounts just fine and works perfectly.

It seems to be when people push on the front of the lens (the extended part when focusing) causing it to lock up.

Yep. It happened to me once because i pushed the front part manually. Now that i know how to avoid it, the issue never came up again

I love my 40mm stm. Best bang for the buck.

I had a problem once with my Canon 70-200 IS II. It would not focus- didn't even look like it was trying. I pulled it off- and put it back on- and the problem hasn't came back. I thought it was a fluke. That's never happened with my Sigma. Now I am starting to connect the dots- a lot of Canon's apparently have focusing issues.

Now, I see I should start a thread, and start collecting serial numbers of working and non-working 70-200 IS II's. Canon apparently has a reliability problem with that model and we should make a point of it and gather the info- and push Canon for a fix. Please don't include the last four digits of the serial number - for security reasons.

wayne.robbins wrote in post #14782991
I had a problem once with my Canon 70-200 IS II. It would not focus- didn't even look like it was trying. I pulled it off- and put it back on- and the problem hasn't came back. I thought it was a fluke. That's never happened with my Sigma. Now I am starting to connect the dots- a lot of Canon's apparently have focusing issues.

Now, I see I should start a thread, and start collecting serial numbers of working and non-working 70-200 IS II's. Canon apparently has a reliability problem with that model and we should make a point of it and gather the info- and push Canon for a fix. Please don't include the last four digits of the serial number - for security reasons.

according to lensrental, the coveted 70-200 mk2 had a high rate of problems. The 17-55 was another one with high problems, but fixed with silent updates. If you're under warranty, send it to canon, I'm sure they have the fix.

KenjiS wrote in post #14775388
I point to what someone said up there, if this was a Sigma lens, you bet thered be people screaming about it

This is priceless - and true. I also have the 40, and yet to have a single issue.

Because it happens rarely and can be fixed in 5 seconds. Plus, it doesn't impact build quality, image quality or AF accuracy, which are the most important lens considerations generally.

I've used it on a 60D, 650D and a 5D3 so far and it's never happened to me yet. I can't think it'd be a major problem if it did.

Canon acknowledges it is a real problem.

canon-ef-40mm-f2-8-stm-product-advisory

Note that merely putting the lens cap on can initiate the malfunction.

pkilla wrote in post #14774723
Cause is not a real problem I never had to dismount my lens to get AF to work I love this lens I got no complaints and no problems maybe is your camera!

You mean except for the fact that Canon admitted it was an issue and is releasing a firmware update this month to fix it?