Mar 05, 2013 16:55 | #1 If I have a 200 F2.8 and double stack 2x teleconverters.... Mainly ANALOG..... but I still have a few digitals hanging around
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D.Vance Goldmember  4,163 posts Likes: 12 Joined Jan 2011 Location: VA More info | Mar 05, 2013 17:00 | #2 Actually, from what I have seen, the 200 does not even work well with one 2X... I cannot imagine 2. Granted, I've only used one, and not for very long, but it was sent back because it was rubbish for birds with the 2X III. So far, that 400 5.6 in your sig is the best I've seen on a 2X. at least, vs. the 100-400L and 200L. I wonder if the video editors on The Titanic ever went, "Sorry, I can't right now. I'm busy synching the Titanic..."
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NewEnglandPhotographer Goldmember 2,343 posts Likes: 5 Joined Feb 2011 More info | Mar 05, 2013 17:01 | #3 no AF. Canon 7D | 70-200mm f2.8is II L | 24-70mm f2.8 L | 50mm f1.8 | 28mm f1.8 | Canon 1.4x TC II | 580EX II
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CanonBob Goldmember 2,063 posts Likes: 52 Joined May 2007 Location: Poitou-Charentes, France More info | Mar 05, 2013 17:20 | #4 ewheeler20 wrote in post #15680805  no AF. It'll try to focus as the second 2x won't be recognised...the combination will still report 400/5.6. 1Dx2 (2), 5DSR, 1Ds3, 1D4, 5D2(590nm), 5D2(720nm) EF600 EF400 EF300-II EF300 EF200 EF200-II EF180L EF135L EF100 EF85-II EF50L TS-E17/4 TS-E24L-II TS-E45 TS-E90 MP-E65 EF70-200-II EF24-70/2.8-II EF16-35/4 EF8-15/4 EF11-24/4 Zeiss 15/2.8 21/2.8 25/2 28/2 35/1.4 35/2 50/2 85/1.4 100/2 135/2 T/C's L-SC & a WIFE!
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Mar 05, 2013 17:27 | #5 I like my 400 and wouldn't give it away for nothing....but I do need some sort of 200 and with f2.8 for low light under canopies etc... So I was thinking either the Canon 200L or the Sigma 70-200f2.8. But as long as I was at it, I would get some TC's...one never knows where that might take either of those two lens. It might appear if I put on the 1.4 first, to either of those two lens I would end up with 280 at F4. Mainly ANALOG..... but I still have a few digitals hanging around
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BobbyT Goldmember  1,202 posts Likes: 3 Joined Dec 2005 More info | Mar 05, 2013 18:07 | #6 D. Vance wrote in post #15680802 Actually, from what I have seen, the 200 does not even work well with one 2X... I have a 200 2.8II prime and Canon 2xTC v3 and they work fantastic together.
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noisejammer Goldmember  1,053 posts Likes: 6 Joined May 2010 Location: Toronto ON More info | Mar 05, 2013 18:20 | #7 Hmm... 800mm f/11... does it _really_ autofocus accurately? In truth, I'm surprised the phase discriminators can see any difference at all. Several cameras and more glass than I will admit to.
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D.Vance Goldmember 4,163 posts Likes: 12 Joined Jan 2011 Location: VA More info | Mar 05, 2013 18:22 | #8 BobbyT wrote in post #15681011 I have a 200 2.8II prime and Canon 2xTC v3 and they work fantastic together. Really? All I know is that it was not good at all with birds. I wonder if the video editors on The Titanic ever went, "Sorry, I can't right now. I'm busy synching the Titanic..."
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BobbyT Goldmember 1,202 posts Likes: 3 Joined Dec 2005 More info | Mar 05, 2013 18:53 | #9 D. Vance wrote in post #15681067 Really? All I know is that it was not good at all with birds. Now that I can't speak on. The only time I really shoot birds is on our annual family vacation at Myrtle Beach. And I just recently picked up the TC. This is from a local rugby game. 
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Mar 07, 2013 13:25 | #10 BobbyT wrote in post #15681011 I have a 200 2.8II prime and Canon 2xTC v3 and they work fantastic together.
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bob_r Goldmember More info | Mar 08, 2013 16:09 | #11 lmans wrote in post #15680881 It might appear if I put on the 1.4 first, to either of those two lens I would end up with 280 at F4. If I understand TC's..the first one reads while the second one is not read by the camera...so if I add the 2x I would then have 560 with a F4 camera reading and still Af (not too sure how fast) , although actual exposure would be different. ? jim I tried this after seeing this post to see if you would still get an aperture of f/4 with stacked TCs, since I thought the best I could get was f/5.6. My setup (7D, Canon 200 f/2.8, Sigma 1.4X and 2X TCs) allows only f/5.6 with the f/1.4 mounted to the camera.  Image hosted by forum (640028) © bob_r [SHARE LINK] THIS IS A LOW QUALITY PREVIEW. Please log in to see the good quality stuff.  Image hosted by forum (640029) © bob_r [SHARE LINK] THIS IS A LOW QUALITY PREVIEW. Please log in to see the good quality stuff. Canon 7D, 5D, 35L, 50 f/1.4, 85 f/1.8, 135L, 200L, 10-22, 17-55, 70-300, 100-400L, 500D, 580EX(2).
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Mar 08, 2013 18:57 | #12 interesting....a good experiment..it appears that the setup is a bit softer....closer but softer. So you had the 1.4 plus one 2x and with the 1.4 nearest to the camera it read the 1.4 only. That is what I thought. I thought it would be a F4 with the 1.4 but jumped to 5.6? jim Mainly ANALOG..... but I still have a few digitals hanging around
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bob_r Goldmember More info | Mar 08, 2013 19:36 | #13 lmans wrote in post #15693411 interesting....a good experiment..it appears that the setup is a bit softer....closer but softer. So you had the 1.4 plus one 2x and with the 1.4 nearest to the camera it read the 1.4 only. That is what I thought. I thought it would be a F4 with the 1.4 but jumped to 5.6? jim That's correct. When I use only the 1.4X, it will go to f/4, but stacking them would only allow f/5.6. Canon 7D, 5D, 35L, 50 f/1.4, 85 f/1.8, 135L, 200L, 10-22, 17-55, 70-300, 100-400L, 500D, 580EX(2).
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Very underrated lens   200 2.8II + 2x II extender + 2x MC4 DGX (using CD focus via live-view on a 7D)   Sony A9, Pentax K1 MKii, Panasonic G9, Sony 200-600, Samyang 12mm F2 NCS CS, 7Artisans 7.5mm f2.8 fisheye, Panagor 90mm f2.8 Macro (OM), , Sigma APO 2x DG EX TC, Tiffen aXent ND 3.0 (ND1000) filter, Olympus OMD E-M5(drown in the Atlantic), Oly 14-42mm, Oly 12-50mm, ZEQ25gt Mount, plus a few other lenses, extension tubes, and general mish-mash
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CanonBob Goldmember 2,063 posts Likes: 52 Joined May 2007 Location: Poitou-Charentes, France More info | Mar 09, 2013 02:35 | #15 lmans wrote in post #15693411 ..... So you had the 1.4 plus one 2x and with the 1.4 nearest to the camera it read the 1.4 only. That is what I thought. I thought it would be a F4 with the 1.4 but jumped to 5.6? jim With stacked TC's, it'll be the one attached to the lens that is recognised, not the one attached to the body. The extra 3 contacts on the front end of the TC are used to determine if a TC is present and which one it is. 1Dx2 (2), 5DSR, 1Ds3, 1D4, 5D2(590nm), 5D2(720nm) EF600 EF400 EF300-II EF300 EF200 EF200-II EF180L EF135L EF100 EF85-II EF50L TS-E17/4 TS-E24L-II TS-E45 TS-E90 MP-E65 EF70-200-II EF24-70/2.8-II EF16-35/4 EF8-15/4 EF11-24/4 Zeiss 15/2.8 21/2.8 25/2 28/2 35/1.4 35/2 50/2 85/1.4 100/2 135/2 T/C's L-SC & a WIFE!
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