omarlyn wrote:
(1.4x ) I know that with the cropping ability of the 7D it may not be necessary to use the 1.4x but (just in case) has anyone tried using the canon 1.4xTC w/Taped Pins on a 400/5.6? I know that certain (non 1-series) bodies handled the 1.4x w/Taped Pins & 400/5.6...has anyone this combo with the 7D?
Omar
I don't have the 400 f/5.6, however, with the 100-400 f/4.5-5.6 and the 1.4x II (pins not taped), there is no AF available with the 7D. Aperture is properly reported as f/6.3-8.0.
With the pins taped the 7D reports the aperture as 00 - and no AF.
omarlyn wrote:
(1.4x ) I know that with the cropping ability of the 7D it may not be necesary to use the 1.4x but (just in case) has anyone tried using the canon 1.4xTC w/Taped Pins on a 400/5.6? I know that certain (non 1-series) bodies handled the 1.4x w/Taped Pins & 400/5.6...has anyone this combo with the 7D?
Omar
I've tried it with a 300 f/4 + Kenko 2x and with the 100-400 + Kenko 1.4x and found that it worked okay. I little slow and needs good light of course, but it works better on the 7D than it did on my 40D.
It also magnified the fact that my 100-400 was front focusing a little.
Do you have a sample of images from this combination?
Omar
I've tried it with a 300 f/4 + Kenko 2x and with the 100-400 + Kenko 1.4x and found that it worked okay. I little slow and needs good light of course, but it works better on the 7D than it did on my 40D.
It also magnified the fact that my 100-400 was front focusing a little.
Let me see if I kept any. I was just messing around shooting ducks and geese at a local pond. mogur2 wrote:
Do you have a sample of images from this combination?
Finally got to the end of this thread. Yes, I have been a sucker and read everything, not necessarily understanding everything but at least read. I have now sold my 50D, which was a good body but really wanted some of the features of the 7D.
From my input of this thread, the 7D is a great camera, focus system is a lot better than the xxD versions especially for tracking but the camera is a lot more complex and will take a lot to figure the best way to use the settings. The full size viewer is a great feature. There is the posibility of images with a slight ghosting which should be fixed by canon in a firmware upgrade.
No it is an aftermarket Raw converter that has had 5 years to get it right.
The after market Raw converters available for the 7D just haven't had enough time to get it right. The same has been true for just about every Canon DSLR made. The most recent glaring difference was the 50D. Try a 3rd party Raw converter with it now and they work great but for 6 month period after it was released thay all sucked except DPP. It took ACR two revisions before you could get decent results.
Well the answer is obvious. Use DPP until the after-market RAW converters reach the point they do not produce artifacts. Same as your 50D analogy.
DPP rocks
Jim Victory said ...
No it is an aftermarket Raw converter that has had 5 years to get it right.
The after market Raw converters available for the 7D just haven't had enough time to get it right. The same has been true for just about every Canon DSLR made. The most recent glaring difference was the 50D. Try a 3rd party Raw converter with it now and they work great but for 6 month period after it was released thay all sucked except DPP. It took ACR two revisions before you could get decent results.
Jim Victory wrote:
You evidently didn't process a Raw 20D file with ACR when it came out. DPP produced much better results until ACR got it right with time.
Jim
Did I say anything about a converter? I said, the RAW data is cleaner. Garbage in, garbage out.
Jack M wrote:
7D will not AF with a Canon 1.4x on the 400 5.6L. No hunting and no menu indication.
Canon non-1-series cameras are programmed not to attempt AF with a lens reporting more than f/5.6. To get it to try, one has to suppress the electronics that reports the presence of the TC to the lens by taping the associated pins on the TC (some cheaper converters omit the pins to begin with). Even with this trick, the camera still may not AF correctly, since the AF mechanism is operating outside of specs. This is what is under discussion -- the 20D/30D would AF decently in this situation, the 40D/50D poorly. Question was whether the 7D, with an AF mechanism that is revamped, will or won't AF without hunting with taped/absent pins on the TC that report its presence.
ejmartin wrote:
Canon non-1-series cameras are programmed not to attempt AF with a lens reporting more than f/5.6. To get it to try, one has to suppress the electronics that reports the presence of the TC to the lens by taping the associated pins on the TC (some cheaper converters omit the pins to begin with). Even with this trick, the camera still may not AF correctly, since the AF mechanism is operating outside of specs. This is what is under discussion -- the 20D/30D would AF decently in this situation, the 40D/50D poorly. Question was whether the 7D, with an AF mechanism that is revamped, will or won't AF without hunting with taped/absent pins on the TC that report its presence....Show more →
Last weekend I tried a Tamron non-reporting 1.4xTC on my 100-400, and I was disappointed that all the camera did was hunt and almost always refused to lock in One Shot and just racked back and forth in AI Servo. My 40D did better.
But I just played around some more in my kitchen, and found that if I select all 19-AF points, it reliably gave focus confirmation in One Shot, even though it's very dark (ISO6400, f/5.6, 1/10 sec). Almost always. And AI Servo seems to work as well. All the other focus modes (spot, single, expansion, and even zone) did poorly (I only tried these with the center point in play).
So don't give up on your 7D with a TC at f/8 - I think using all 19-points is going to work, and very well at that. Looking forward to trying it in daylight on some birds.
msalvetti wrote:
Last weekend I tried a Tamron non-reporting 1.4xTC on my 100-400, and I was disappointed that all the camera did was hunt and almost always refused to lock in One Shot and just racked back and forth in AI Servo. My 40D did better.
But I just played around some more in my kitchen, and found that if I select all 19-AF points, it reliably gave focus confirmation in One Shot, even though it's very dark (ISO6400, f/5.6, 1/10 sec). Almost always. And AI Servo seems to work as well. All the other focus modes (spot, single, expansion, and even zone) did poorly (I only tried these with the center point in play).
So don't give up on your 7D with a TC at f/8 - I think using all 19-points is going to work, and very well at that. Looking forward to trying it in daylight on some birds.
I found also that my 7D would not AF when I had stacked teleconverters on the 400/2.8 (1.4X and 2X, equivalent 1120mm, f/8) despite a reported f/5.6. I hunted relentlessly, and managed to focus only 1 in 20 times on the moon. The 5D2 and 5D can do this with just the center AF point activated.
That was in a situation where I had only 1 AF point selected. When I selected a zone AF scheme, I sometimes got confirmation in manual focus. I may try the 19-point grid and see how it works with the stack.
My 7D + 400 F5.6L+ EF1.4TC II works but hunts a bit to lock on at good light after taping the pin. So far only tested on center point without any surrounding assist points turn on and it works slightly better than my previous 50D did. YMMV
) I know that with the cropping ability of the 7D it may not be necessary to use the 1.4x but (just in case) has anyone tried using the canon 1.4xTC w/Taped Pins on a 400/5.6? I know that certain (non 1-series) bodies handled the 1.4x w/Taped Pins & 400/5.6...has anyone this combo with the 7D?
