p.2 #1 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
ruhikant wrote:
It is a little off topic but I just tested (few hrs ago) my Ef500/4IS MKI with 1.4TcIII+1.4 TC Kenko with 5D3 to get an effective 1000mm. Surprisingly good AF maybe as good as if not better than that of 500 +2xIII with 1D4 combo.
Looks like a viable option to me if the light is good.
Hi,
Could you tell me which Kenko model you are using and also in what order do you stack the TCs? I assume the Kenko goes against the camera?
p.2 #2 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
AGeoJO wrote:
The AF of my 800mm f/5.6 works just fine with the combo Kenko 1.4X TC on my 5D Mark III. I tested that a few months back but I didn't use it because of the noise IS issue. Canon recently upgraded my lens to work properly and I can confirm it again, that it works fine with all cross-type points using both the Kenko or Canon 1.4X Mark III TC. Again, 3 pins have to be taped on the TC side.
Hey Joshua,
Which Kenko are you using? Also do you find a difference between the Kenko and using the tape on the Canon?
I'm asking because I posted a comment on Artie's blog and mentioned the 1.4 with tape may be just as good. Artie claims the taped Canon 1.4TC on the 1DX with the 800 is not good and jumps and "chatters" a lot?? Have you found a difference?
p.2 #4 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
arbitrage wrote:
Hey, but make sure you click on his link to buy the Kenko
No, Geoff, not buying any of that stuff....... my interest in that matter is strictly academic.... 800mm and f/5.6 is long enough and slow enough for me.
However, if indeed that Kenko TC allows a good f/8 AF functionality on 1DX for some peculiar reason, I expect that to last only until the next firmware update.
Another possibility is that the 1DX which Morris has got is somehow different, perhaps a preproduction unit with the f/8 AF enabled.
p.2 #5 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
arbitrage wrote:
Hi,
Could you tell me which Kenko model you are using and also in what order do you stack the TCs? I assume the Kenko goes against the camera?
Thanks!!
That combo is looking good from the pics!
Kenko pro the reporting version but camera does not see it since the canon version is attached to the lens.
p.2 #6 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
PetKal wrote:
No, Geoff, not buying any of that stuff....... my interest in that matter is strictly academic.... 800mm and f/5.6 is long enough and slow enough for me.
However, if indeed that Kenko TC allows a good f/8 AF functionality on 1DX for some peculiar reason, I expect that to last only until the next firmware update.
Another possibility is that the 1DX which Morris has got is somehow different, perhaps a preproduction unit with the f/8 AF enabled.
Yeah that is why I asked Joshua which model he has. My understanding is that the MC4 version is non-reporting as it has less pins (easy to see on the BH product shot). The 300 DGX Teleplus PRO is supposed to be reporting with all the same pins as the Canon version (also can see these extra pins on the BH link).
I wonder if anyone else has tried the DGX Pro model on either the 5D3 or 1DX to get the same result as Mr. Morris??
There is a thread on BirdPhotographers.net (Mr. Morris's site) from July discussing the failure of the 1.4 DGX Pro on the 5D3 with the 800L. Another member got the same error using the 1.4 Kenko MC4 with the 5D3 and 800L. However, that same member got the 2.0 Kenko MC4 to work fine with the 5D3 and 800L. Seems like an error with Kenko TCs, 5D3 and 800L. Both Mr. Morris and the other member had the 5D3 read a "00" aperture and lock up with the 1.4TC (both DGX and MC4) combo.
However, Joshua and some others seem to have this combo working so not sure what is going on with the different experiences. Maybe it is simply a matter of what gets connected first (TC to lens and then camera OR TC to camera and then lens)?? Who knows!
p.2 #7 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
arbitrage wrote:
Hey Joshua,
Which Kenko are you using? Also do you find a difference between the Kenko and using the tape on the Canon?
I'm asking because I posted a comment on Artie's blog and mentioned the 1.4 with tape may be just as good. Artie claims the taped Canon 1.4TC on the 1DX with the 800 is not good and jumps and "chatters" a lot?? Have you found a difference?
Thanks
Geoff,
Mine is the Teleplus Pro 300 DG, which is a reporting TC and the pins have to be tapped to get the AF to work on the f/5.6 lens on my 5D Mark III. I just left the tape on the pins of the TC since putting the tape on and off in the field is a pain in the babushka . That TC is used exclusively for that lens, my only f/5.6 lens and for anything else I used my Canon 1.4X TC without tape, of course. I just received my lens back from Canon and except for some around the yard testing, I have done anything serious with it. I could not tell any difference between the two TCs operational wise, which says a lot for the Kenko. I haven't done any IQ comparison between the two, to be frank. Keep in mind that my findings are from results using the 5D Mark III. I am not sure whether the 1DX would behave differently or not and if it does, its AF should be better than that of the 5D Mark III but you can never tell. I hope this helps. Please let me know if you need any additional information.
Lars Johnsson Offline • • • • • • • Upload & Sell: Off
p.2 #8 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
I think it's rather funny when he write that he have made a Mega-Amazing Discovery
This is just like it have been with about every camera before. Tape the pins or use a 3rd party TC that doesn't report.
p.2 #9 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
Lars Johnsson wrote:
I think it's rather funny when he write that he have made a Mega-Amazing Discovery
This is just like it have been with about every camera before. Tape the pins or use a 3rd party TC that doesn't report.
I guess A. Morris seems to become very enthusiastic about personal discoveries he makes in his photography journey, similar to when he recently discovered that one could reassign the AF function away from the shutter release button. How can we blame someone for feeling excitement for their craft ?
Sep 01, 2012 at 06:17 AM
Lars Johnsson Offline • • • • • • • Upload & Sell: Off
p.2 #10 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
PetKal wrote:
I guess A. Morris seems to become very enthusiastic about personal discoveries he makes in his photo journey, similar to when he recently discovered that one could reassign the AF function away from the shutter release button. How can we blame someone for feeling excitement for their craft ?
No wonder he is such a famous photographer with those two new discoveries in recent time First the AF function and then the non reporting TC.
p.2 #12 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
www.birdsasart.com/about.html
Short biography of renowned bird photographer Arthur Morris. ... About Arthur Morris. Arthur Morris is a free-lance nature photographer and writer specializing in ...
Who among us is renowned
Peter lost that status when he posted a balloon and Lars bio does not include an X
p.2 #14 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
ruhikant wrote:
Kenko pro the reporting version but camera does not see it since the canon version is attached to the lens.
That's correct, no tape would be needed in that scenario (as long as you don't mind 1 of the tc's being reported)
For those that aren't aware,
The way a TC is reported is via the lens it's attached to. Which is why the lens mount end has the 3 extra pins and the lens itself (as long as its a TC compliant lens) has the extra contacts.
On the body there are no extra pins (and likewise on the body end of the TC there are no extra contacts) .
So if your stacking tc's it's only ever going to be the TC that's mounted to the lens that is reported to the body.
Eg: 2.8 lens > 2x >1.4x>body will report as f5.6
2.8 lens>1.4x>2x>body wil report as f4
Of course the above assumes you can stack in either configuration which is not possible with the canon ones
p.2 #15 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
Art is right about the chatter. It's not something you can hear but a "quivering" of the focus before it settles down. My concern is if there might be any damage with long term use.
p.2 #16 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
However, the kenko 1.4Tc Pro he linked in his blog is a reporting one and from his writing it is sure not reporting to the camera. Am I missing something here?
p.2 #17 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
ruhikant wrote:
However, the kenko 1.4Tc Pro he linked in his blog is a reporting one and from his writing it is sure not reporting to the camera. Am I missing here?
I think this is what makes this discovery somewhat remarkable. He is using the reporting TC and yet the camera is working with it.
Also if you read into the comments on the blog he reports that the camera EXIF is registering f/8 and 1120mm focal length. So it is reporting to the camera but the camera isn't stopping the AF like it would with an un-taped Canon. He also reports that the metering is not working correctly in that he has to compensate for the 1-stop of light loss by using EC.
As Peter had mentioned earlier, better be careful with future FW updates as Canon may snuff this out secretly in a future update.
p.2 #18 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
AGeoJO wrote:
Geoff,
Mine is the Teleplus Pro 300 DG, which is a reporting TC and the pins have to be tapped to get the AF to work on the f/5.6 lens on my 5D Mark III. I just left the tape on the pins of the TC since putting the tape on and off in the field is a pain in the babushka . That TC is used exclusively for that lens, my only f/5.6 lens and for anything else I used my Canon 1.4X TC without tape, of course. I just received my lens back from Canon and except for some around the yard testing, I have done anything serious with it. I could not tell any difference between the two TCs operational wise, which says a lot for the Kenko. I haven't done any IQ comparison between the two, to be frank. Keep in mind that my findings are from results using the 5D Mark III. I am not sure whether the 1DX would behave differently or not and if it does, its AF should be better than that of the 5D Mark III but you can never tell. I hope this helps. Please let me know if you need any additional information.
Thanks Joshua,
If you ever have the chance it would be interesting to see if you untape the Kenko and use it with the 800L and the 5D3 if you get the same lockup and aperture set at "00" that others have had happen.
The interesting thing is he is using that same TC, it is reporting the correct way, but the 1DX is still allowing normal AF functions He also tried it on the 1D4 with the 800L and it let him use all the AF points instead of just the centre point. So basically the same sort of functionality.
p.2 #19 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
I am curious does the 1DX suffer the same flaw as the 5D3 that requires the IC upgrade of the 200/2 or 800/5.6?
Sep 01, 2012 at 01:33 PM
Lars Johnsson Offline • • • • • • • Upload & Sell: Off
p.2 #20 · 800mm f/5.6 + 1D-X + 1.4x Extender = Apparently It Can AF!
arbitrage wrote:
I think this is what makes this discovery somewhat remarkable. He is using the reporting TC and yet the camera is working with it.
Also if you read into the comments on the blog he reports that the camera EXIF is registering f/8 and 1120mm focal length. So it is reporting to the camera but the camera isn't stopping the AF like it would with an un-taped Canon. He also reports that the metering is not working correctly in that he has to compensate for the 1-stop of light loss by using EC.
As Peter had mentioned earlier, better be careful with future FW updates as Canon may snuff this out secretly in a future update. ...Show more →
But he says the camera does not note the TC with it's one stop loss of light. And because of that he have to shoot -1 in the exposure all the time
