Messages

1

EOS Bodies - For Stills / Re: Canon EOS-1D X AF at f/8 with the Kenko 1.4TC

« on: September 09, 2012, 12:10:53 PM »

Yes. In order to get f/8, I tried two options.
a) 70-200 2,8 + Canon x2 + Kenko 1,4 pro 300
b) 70-300 DO 5,6 + Kenko 1,4 pro 300

Both did AF well, and not only whith the center point.

And the good news is that it still works with firmware 1.06

Unfortunately, I don't have an adequate lens to check whether it would also work at f/11

2

EOS Bodies - For Stills / Re: Canon EOS-1D X AF at f/8 with the Kenko 1.4TC

« on: September 09, 2012, 11:59:34 AM »

What I know is based on the comments of several others both on my blog and on the BPN post here: http://www.birdphotographers.net/forums/showthread.php/102647-1DX-Canon-800mm-f-5-6L-IS-Kenko-Teleplus-PRO-300-DGX-1-4x-AF-Teleconverter (I believe...)

Should point out that Phil on BPN stated, "I have a Kenko 1.4X Teleplus Pro 300 sitting in my dry box for years."  It's been mentioned in a couple of places that the f/8 AF on the 1D X seems to work only with the newest DGX version of the Kenko 1.4x, not with the older DG version (therefore possibly not with the even older vanilla Pro 300 version). 

So, perhaps there's some hope...

I have just tried again with the Kenko and 70-300 DO on my 1dX, and it still works, with firmware 1.06.

3

EOS Bodies - For Stills / Re: Canon EOS-1D X AF at f/8 with the Kenko 1.4TC

« on: September 09, 2012, 11:55:56 AM »

Maybe known, but anyway.

A Kenko 1.4 PRO 300 DG won't do the trick on my 7D with 400 5.6. I guess you need a DGX  .

Just had a look on the Kenko site. It should not be possible according to them. They state that:

"Most Canon EOS camera bodies are programmed to shut down auto focus if the calculated effective aperture for the lens and teleconverter is smaller than f/5.6, the Kenko Teleplus PRO 300 converters work the same way"

Childeric,  Not to be a pain but that is not exactly what you wrote. In fact, what you wrote is not at all what I wrote .

Well i didn't say what you quote, Peerke did.

What I wrote here back in July was that my 1dX did AF at f/8 with this kenko pro300 adapter, that's all.

4

EOS Bodies - For Stills / Re: Canon EOS-1D X AF at f/8 with the Kenko 1.4TC

« on: September 05, 2012, 07:12:42 AM »

What a surprise !

I mentioned exactly that almost two months ago ;-)

http://www.canonrumors.com/forum/index.php?topic=7980.msg145491#msg145491

By the way, it seems to me that overexposure is more than one IL, and the correct aperture is reported by the 1dX, strangely.

5

EOS Bodies - For Stills / Re: Canon EOS-1D X Review - Fred Miranda

« on: September 03, 2012, 06:29:06 PM »

Strange as it may seem, mine's AF works at f/8 (such as f5,6 lens plus 1,4 extender).

Did Mr Miranda try this ?

6

Pricewatch Deals / Re: Canon EOS-1D X Stock Notice from Amazon

« on: August 15, 2012, 09:00:14 PM »

This is amazing.

I am a mere amateur. I had ordered the 1dX at a french large techno supplier (fnac.com) end of June, and it delivered first week of July, so that I could spend my whole summer vacation with it (and I am delighted).
And now I discover that mi August, there is still shortage everywhere ?

I wonder how Canon's logistics work, and I feel I have been lucky with mine.

7

EOS Bodies - For Stills / Re: My Canon EOS-1D X Has Arrived!

« on: July 13, 2012, 05:27:19 PM »

Looks like a real 1Dx for man, and a plastic Vuitton bag for woman. Good home management ?

8

EOS Bodies - For Stills / Re: 1Dx and f/8 AF: it works.

« on: July 13, 2012, 05:25:37 PM »

After more testing, it seems that it is overexposed by 5/3 IL (1,67).

Even odder...

9

EOS Bodies - For Stills / Re: 1Dx and f/8 AF: it works.

« on: July 12, 2012, 05:24:12 PM »

From what I collect from various forums, my version of the Kenko x1,4 is reporting. And by the way, aperture as shown on the 1Dx display is the right one (minimum is f/8). Therefore, I am puzzled why exposure is wrong by more than 2 IL. Anybody would have an explanation ?

10

EOS Bodies - For Stills / Re: 1Dx and f/8 AF

« on: July 12, 2012, 03:23:04 PM »

AF also works on the same 1Dx with the same Kenko x1,4 attached to the 70-300 f4,5-5,6 DO, at all focal lenghts.

Same issue with exposure however.

11

EOS Bodies - For Stills / Re: 1Dx and f/8 AF

« on: July 12, 2012, 01:14:30 PM »

Yes, without taping the pins.

12

EOS Bodies - For Stills / 1Dx and f/8 AF: it works.

« on: July 12, 2012, 11:03:18 AM »

I have just tried the following combination on my production 1Dx :

Canon EF 70-200 f/2,8 II IS + Canon extender x2 III + Kenko extender x1,4 pro 300.

With these attached, AF works well, just a bit slow, with the central sensor. But exposure is wrong, roughly 2 IL overexposed.

It also works with the Canon extender x2 II.

13

EOS Bodies - For Stills / Re: My Canon EOS-1D X Has Arrived!

« on: July 06, 2012, 07:48:50 PM »

Mine has arrived too.

Attached a few full size raws at high iso.
All taken handheld with 100/2,8 macro IS at f/4
iso : 12800, 25600, 51200, 102400, 204800

In zip file attached : http://www.4shared.com/zip/yzJ09Iby/Canon_1dx_high_iso_samples_-_r.html