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Topics - TAF

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EOS-M / 22mm M Lens with debris inside?
« on: February 15, 2014, 10:30:43 AM »

As i do before every use, I took a look into the front of the lens to make sure there is no dust on there, and I noticed a few pieces of white material.  Then I looked closer and realized it is INSIDE the lens; one piece is stuck to the inside of the front element, and another is stuck on the iris blades.

It looks like the plastic they make the internal gears from.

Has anyone else noticed this?  I'll call Canon next week (the camera/lens is only 7 months old), but I was wondering if anyone else has experienced this?  And/or how Canon might deal with it?


EOS-M / Maybe they need an accessory mirror box?
« on: July 14, 2013, 11:05:13 AM »
Sony has apparently come to the conclusion that sometime a mirror box is a better solution, so they've come out with it as an accessory:

Imagine a similar accessory for the EOS-M, permitting full speed auto focus with EF lenses, when you aren't as concerned with size.


EOS Bodies / Bracketing Focus (automatically)
« on: November 17, 2012, 11:41:39 AM »
Hello All;

I have a thought for a feature that doesn't seem to be there yet.

With our EF lenses, the camera knows (and can quickly set) the focus distance.  The computer in the camera can easily calculate the DOF from the exposure.  They already offer built in exposure bracketing.

Why not offer focus bracketing?  With a USM lens, the time required to shoot (say) three successive photos with three different focus distances would be minimal.  Perhaps setable for how many and what the end points are.  I've seen it done manually (it is certainly easy to do that way; I sometimes do it just to be certain of capturing a landscape just the way I want it).

Seems like something that would, from time to time, be very valuable to have.  And the ability to combine the photos just as one does with HDR would make for potentially fascinating photos.

And if this is buried in menu 174 of my 5D3, my apologies for not having read the manual enough times to find it...

Lenses / 40mm Pancake Malfunctioning?
« on: July 20, 2012, 11:47:44 PM »

I got my 40mm pancake earlier in the week, and had been enjoying it on my 5D3.

But tonight, it simply wouldn't focus, and made a most peculiar sound.  I switched lenses and everything was fine, so I assumed it wasn't the body.  Then I put the 40 back on and it worked.  A little time later, after turning the camera off then back on, it didn't work again.  I removed it and immediately put it back on, and it was fine (camera off...but cycling power did not reset the problem).

I haven't experienced any problems with any other lenses (24-105L, Sigma 50f1.4, Canon 28f1.8).

Sounds like it needs to go back to Canon...anyone else having this problem?  Could it be a user issue?


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