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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Apr 2014 (Sunday) 00:39
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Tapping the pins on a 1.4 E + 100-400 lens

 
itw
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Apr 24, 2014 19:58 |  #16

jack_dorsey wrote in post #16853712 (external link)
Hi, With my 100-400L, 1.4X Mark II (with taped pins) and 70D results are very inconsistent.

Hi Jack, greetings from a fellow Granite Stater. Thanks for the comeback and honest review. Me, I ain't such a patient man.... ;)

Good Luck out there. Spring is just around the corner !

TW


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Walk softly and carry a Big White lens

  
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Tapeman
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Apr 24, 2014 21:17 |  #17

I have found that spending a lot of time and effort to push gear to (and beyond) it's limits results in such a low percentage of keepers that after you have figured out you can do it, you don't bother anymore.:confused:

I used to stack Canon's 1.4X & 2X extenders on my 300 f/2.8L. In all but the best light the autofocus would hunt like crazy on my 1D4. I tried it a few times and stopped.:rolleyes:


Canon G1X II, 1D MKIV, 5DSR, 5DIV, 5D MKII, 16-35/2.8L II, 24-70/2.8L II, 70-200/2.8L IS II, IS, 100-400/4.5-5.6 L IS II, 500/4 L IS II, 24-105/4 IS, 50/2.5 macro, 1.4x MKII, 1.4X MKIII, 2X MKIII,580EX II, 550EXs(2), ST-E2.
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patrol50
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Apr 26, 2014 20:34 |  #18

Tapeman wrote in post #16859440 (external link)
I have found that spending a lot of time and effort to push gear to (and beyond) it's limits results in such a low percentage of keepers that after you have figured out you can do it, you don't bother anymore.:confused:

I used to stack Canon's 1.4X & 2X extenders on my 300 f/2.8L. In all but the best light the autofocus would hunt like crazy on my 1D4. I tried it a few times and stopped.:rolleyes:

yep agree you have a point but still its nice to know i can ( or could ) get it to work ok with the 1.4 ext and tapped pins in good light etc ( and interestingly my new 1.4 ser 111 ext is sharper than my older series 11 ext and the difference is noticeable which is different to general belief that they are very close )

but my real problem is i really want the 200 - 400 but could never justify that $ expenditure

cheers rob


C:- 7D Mk11 ; 7Dc ; 600D & SX10 IS / L:- EFS 10-22 f3.5-4.5 USM ; 55-250 f4-5.6 IS 11; 18 -200 f3.5-5.6 IS ; & EF 16- 35 f4 L IS USM , 24-105 f4 L IS USM; 70-200 f4 L IS USM; 100-400 f4.5-5.6 L IS 1 USM (V1 and V11); + C 1.4 Ext Mk3 & Tam 150 - 600 f5-6.3 DI VC USD.

  
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jbrackjr
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Apr 26, 2014 21:26 |  #19

I have a Kenko Pro 300 DG 1.4 TC which works very well (both focus and IQ) with my 200F2.8 but it is not good with my 100-400. Like most have said, it's not worth the effort.

If you need to go longer than 400, I highly recommend you look at the Tamron 150-600.


Jim
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Tapping the pins on a 1.4 E + 100-400 lens
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