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Lens extenders
Apr 23, 2012 16:43:51 #
Croce wrote:
OK. Time to end the controversy over what will and... (show quote)
Miracles do happen. Maybe this should be reported to the Vatican!
8-) 8-)
Apr 23, 2012 16:57:39 #
Michael Digital wrote:
While the Canon 2X gets poor results with the 100/400L, it gives excellent results with the Canon 400L 5.6. If you have a camera with live view, 7D in this image, autofocus can be achieved with this combo in live view mode.
Image was taken with 7D and 400L 5.6 and Canon 2X.
Image was taken with 7D and 400L 5.6 and Canon 2X.
Wow Michael! That's incredible! I have a 7D; the 2x is amazing, but I can't afford that one.
Apr 23, 2012 17:05:33 #
Note according to the compatibility chart for Canon's 1.4 extender, it comes with the following limitations:
4 With the EOS-1D series, EOS-1v and EOS-3, AF is possible, but with the center focusing point only.
*5 The Image Stabilizer does not operate with the following cameras: EOS 650, 620, 630/600, RT, 700, 750, 850, EOS-1, A2/A2E, 10s, Elan, Rebel/Rebel S, Rebel II/Rebel SII.
So you do loose IS and AF depending on the camera body. The newest Canon 1.4 extender is $500. If AF is compatible with your camera body, it is not limited to a specific F-stop as long as you are using the center focusing point.
If you lose IS and AF, you'll be hand holding the equivalent of a 560mm or a 900mm depending on sensor, of flying birds so it is difficult to capture images but it can be done with practice. I use the 1.4X with my 400mmL F4.0 but I keeep both of the functions.
If you have a friend who has one, ask to try it to see if it is worth the expense.
4 With the EOS-1D series, EOS-1v and EOS-3, AF is possible, but with the center focusing point only.
*5 The Image Stabilizer does not operate with the following cameras: EOS 650, 620, 630/600, RT, 700, 750, 850, EOS-1, A2/A2E, 10s, Elan, Rebel/Rebel S, Rebel II/Rebel SII.
So you do loose IS and AF depending on the camera body. The newest Canon 1.4 extender is $500. If AF is compatible with your camera body, it is not limited to a specific F-stop as long as you are using the center focusing point.
If you lose IS and AF, you'll be hand holding the equivalent of a 560mm or a 900mm depending on sensor, of flying birds so it is difficult to capture images but it can be done with practice. I use the 1.4X with my 400mmL F4.0 but I keeep both of the functions.
If you have a friend who has one, ask to try it to see if it is worth the expense.
Apr 23, 2012 19:26:39 #
I have been using my 100-400 for years with a Canon 1.4x mkll extender with the pins taped and it has always worked well. First on a Canon 20D and now on my 5Dll. Yes focus is a little slower, sometimes it hunts more than normal and when at the extremes sometimes I even have to give it a little help with the manual focus before the auto-focus will take over, but then it locks on and is very sharp. I would not hesitate to get the 1.4 and then tape the pins. You will be happy with it.
My question is to Croce. Are you using the Kenko w/o taped pins or w/taped pins. I wasn't clear about that. I assume you have actually used the Canon and prefer the Kenko's IQ over the Canon? Croce, please clarify. Thanks
My question is to Croce. Are you using the Kenko w/o taped pins or w/taped pins. I wasn't clear about that. I assume you have actually used the Canon and prefer the Kenko's IQ over the Canon? Croce, please clarify. Thanks
Apr 23, 2012 20:32:15 #
Croce
Loc: Earth
Hi Chuck,
I respect your experience and opinion. I believe it to be honest. I just do not believe it to be accurate. I had both the 1.4 and 2x canon TC's. They now have a later version with FD coatings or some such but no improvement in communication between the lens and TC and Body.
I have practiced this taping procedure on a couple of other matches through the years but do not accurately recall which. Those little gold dots on lens and lens appliances are designed to pass information from the one component to the other. The body of which is the least significant because it gets the tail end report. The body will not report the correct focal length (which is what the 3 taped connectors are to do) because they are ignored. That function if left as is, also messes up f stop and low light requirement to the body where the determination whether to focus or not focus is made.
What I think happens, and I do not know this to be correct, is that if the body is left stupid and accepts only what is reported and the true aperture, because the TC is not seen, it is left to resort to the lens only report which is left to proceed because the TC is blocked.
I am almost confusing myself at this point so I will end this but I still must say, I cannot buy a caveat which in effect says brand matched components function better than aftermarket components. I believe sometime that is the case and sometimes it is not. If that were true there would be no such thing as an aftermarket product and that holds true for not only photography equipment but computer components, software improvements, automobile parts, gun parts, machine parts and you name it. Whew .... Love ya Chuck but can't buy your hypothesis.
I respect your experience and opinion. I believe it to be honest. I just do not believe it to be accurate. I had both the 1.4 and 2x canon TC's. They now have a later version with FD coatings or some such but no improvement in communication between the lens and TC and Body.
I have practiced this taping procedure on a couple of other matches through the years but do not accurately recall which. Those little gold dots on lens and lens appliances are designed to pass information from the one component to the other. The body of which is the least significant because it gets the tail end report. The body will not report the correct focal length (which is what the 3 taped connectors are to do) because they are ignored. That function if left as is, also messes up f stop and low light requirement to the body where the determination whether to focus or not focus is made.
What I think happens, and I do not know this to be correct, is that if the body is left stupid and accepts only what is reported and the true aperture, because the TC is not seen, it is left to resort to the lens only report which is left to proceed because the TC is blocked.
I am almost confusing myself at this point so I will end this but I still must say, I cannot buy a caveat which in effect says brand matched components function better than aftermarket components. I believe sometime that is the case and sometimes it is not. If that were true there would be no such thing as an aftermarket product and that holds true for not only photography equipment but computer components, software improvements, automobile parts, gun parts, machine parts and you name it. Whew .... Love ya Chuck but can't buy your hypothesis.
Apr 23, 2012 20:50:08 #
CAM1017 wrote:
quote=imagemeister If you see the images - you wi... (show quote)
Absolutely the cheapest way to get beyond 400mm with RELIABLE AF and IQ is the old original used 300mm f2.8 L lens with Canon 2X II ( $ 2600 off e-Bay - maximum) and, it might even be the BEST way when you factor the less weight and bulk compared to the 400, 500, 600 L lens ! and I am amazed at the IQ.
RE: Converters -- I have and use Tamron except with the 300 L - both their standard and SP versions on many different lenses and have always been amazed at how good they are !
Apr 23, 2012 20:55:40 #
Croce
Loc: Earth
Hi Sharp,
Both assumptions correct. I tape and at this point do prefer the Kenko Pro Plus.
I stress the pro model and not the lesser one which I have no experience with. I have also tried Tamron and although satisfied, still prefer the Kenko Pro Plus.
Both assumptions correct. I tape and at this point do prefer the Kenko Pro Plus.
I stress the pro model and not the lesser one which I have no experience with. I have also tried Tamron and although satisfied, still prefer the Kenko Pro Plus.
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Apr 24, 2012 05:28:17 #
Michael Digital wrote:
While the Canon 2X gets poor results with the 100/400L, it gives excellent results with the Canon 400L 5.6. If you have a camera with live view, 7D in this image, autofocus can be achieved with this combo in live view mode.
Image was taken with 7D and 400L 5.6 and Canon 2X.
Image was taken with 7D and 400L 5.6 and Canon 2X.
Awesome detail, NOTHING wrong with that combo!! Great work!
Apr 24, 2012 07:05:57 #
Apr 24, 2012 09:25:23 #
actigner wrote:
quote=nat quote=BigBear Hey Nat, I will tell yo... (show quote)
Soo, actigner - If I should go where the egrets are, what size waders would go with my 100-400 lens? Better still, can you recommend a model of air-boat to cross the marsh to get closer to the birds? I tried calling "Here birdie, birdie," but they yelled back that I should buy an extender. :lol:
Apr 24, 2012 10:45:43 #
nat wrote:
quote=actigner quote=nat quote=BigBear Hey Nat,... (show quote)
Even using manual focus and a tripod with the 100-400 lens you will see a degraded image quality. I have tried this several times and have finally sold the the extender as a helpless cause for the lens I needed to use it on.
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Apr 24, 2012 10:48:35 #
Well, I have to see for myself. I have 30 days to return it. It seems that everyone has a different experience with it. I'm an old person, so maybe it will satisfy my old eyeballs. However, I am taking your comments seriously. Thanks
Apr 24, 2012 12:21:02 #
Croce
Loc: Earth
Cam, I don't have the Vaticans address. Please send these on for me. They were taken with 100-400, at 400 with Kenko Pro 1.4 on a 20D for an effective focal length of 896mm. It is because of results like this that I sold my Canon 500mm f/4L. A great lens but too much work to lug around and set up. These were shot from my car top on a bean bag. I sized them down to 1200x800 at 104 dpi for posting here.
Wood Stork
Snowy Egret
Apr 24, 2012 14:07:34 #
Croce wrote:
Cam, I don't have the Vaticans address. Please send these on for me. They were taken with 100-400, at 400 with Kenko Pro 1.4 on a 20D for an effective focal length of 896mm. It is because of results like this that I sold my Canon 500mm f/4L. A great lens but too much work to lug around and set up. These were shot from my car top on a bean bag. I sized them down to 1200x800 at 104 dpi for posting here.
These are great photos. I have ordered the Kenko Tele-Plus MC4 AF 1.4x. Really good price. I hope my photos are as sharp as these. I'll know in a few days. Nat
Apr 24, 2012 18:54:20 #
Croce wrote:
Cam, I don't have the Vaticans address. Please send these on for me. They were taken with 100-400, at 400 with Kenko Pro 1.4 on a 20D for an effective focal length of 896mm. It is because of results like this that I sold my Canon 500mm f/4L. A great lens but too much work to lug around and set up. These were shot from my car top on a bean bag. I sized them down to 1200x800 at 104 dpi for posting here.
Very nice photo's! wish I could have purchased your 500mm lens. :D
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