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  Previous versions of skibum5's message #11516045 « Canon 5D Mark III firmware update in April 30th 2013! »


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Re: Canon 5D Mark III firmware update in April 30th 2013!

Fred Miranda wrote:
skibum5 wrote:
Argggghh! I hope the 1.2.1 leak is not the final release.

It doesn\'t seem to recognize using the 1.4x TC III with the 70-300L! (and it fits perfectly at the long end)

It doesn\'t seem to recognize the TC is on .

It doesn\'t report it as a lens + TC combo for micro-adjustment and it says f/5.6 instead of f/8 .

The AF is awful! It does a hyper oscillation before settling in (only 1/3 of the time is it actually in focus ) and it\'s so slow. It seems like they decided the 1.4x TC III is not compatible with the 70-300L so they don\'t let it work with the new f/8 AF mode .

It was precisely with this lens that I cared about f/8!! I have my 300 2.8 that works fine with either 1.4x or 2x III TC already but that is so heavy so it would\'be been nice to get f/8 out of the 70-300L for the times I don\'t wanna lug the beast around which can be a real pain.

Ironically, now I guess I need to spend another $250 and get a kenko? Maybe I should dump the canon 1.4x TC to pay for it.

But people say the Kenko is not as sharp with the 70-300L (or other lenses) and that they clearly notice a bit of a quality difference with the 70-300L compared to using the 1.4x TC III. What a shame.

I hope the final release version firmware is different or they allow for a patch.

It\'s quite a tremendous shame since the 70-300L actually maintains pretty solid quality with the Canon 1.4x TC III. At f/6.3 (f/9) the quality is quite solid and it is MUCH better than upscaling the bare lens, much. It would be soooo useful! COme on Canon THIS is exactly the kinda scenario we wanted f/8 AF for! But seemingly being locked out of the new f/8 mode the 70-300L + 1.4x TC III AF is such an utter colossal wreck . But the optical output is so solid. So frustrating!

Perhaps they excluded the 70-300L intentionally to avoid accidental lens damage.
As far as I know, the 1.4x extender only fits on the 70-300L from the 250mm to 300mm range.

Yeah I\'m sure that is the reason, but it would be nice if they\'d make it work anyway even if they don\'t put in the supported list. They could say warn to not use it (to fend of the sue happy world we are in and make the lawyers happy) and then enable it anyway, off the record.

Apr 28, 2013 at 06:48 PM

  Previous versions of skibum5's message #11516045 « Canon 5D Mark III firmware update in April 30th 2013! »