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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 24 Feb 2011 (Thursday) 10:00
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Ring USM & 1-Series Bodies Question

 
Canon1969
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Feb 24, 2011 10:00 |  #1

POTN Peeps,

I can't recall where, but I thought I had read of an advantage that 1-series bodies had over other series when it comes to the speed of lens focusing. Meaning a Ring USM lens will focus faster (mechanically) on 1-series vs 5-series. Is this true, am I dreaming, I can't find any word/spec on this again and I'm wondering if I just misinterpreted something.

As you may have guessed, I'm considering purchasing a 1D4 to compliment my 5D2 to shoot sports.

Thanks in advance for the insights!


5D Mark II (gripped) | 24-105mm f/4.0L IS | 70-200mm f/2.8L IS II | 85mm f/1.2L IS II | 100mm f/2.8L Macro IS

  
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zarray
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Feb 24, 2011 12:01 |  #2

Its simple really...the 1D bodies have a larger, more powerful, higher voltage battery to drive the AF motor.


5D Mark II | 5Dc |17-40 | 24-105 | 70-200 F2.8 IS | Sigma 50mm 1.4 | 580EX

  
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cristphoto
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Feb 24, 2011 18:22 |  #3

I remember when I looked at the 85L mkII at a dealer they mounted it on a 5D2. I noticed it focused slowly and mentioned it to the sales guy. He said I could bring it back in 30 days and cancel the deal if not satisfied. When I got it home and put it on my 1D3 bodies it focussed noticibly quicker so it was a non-issue. As the previous post stated, the 1 series body evidently gives more power to the lens. The Canon White Paper for the 1D3 speaks to the improvements in the mkIII AF ability, stating it's three times better/faster than the 1D2n.


5D MKIV x2, 24L II, 35L II, 50L, 85LIS, 100LIS Macro, 135L, 300LIS, 16-35LIS, 24-70L, 24-105LIS II, 70-200LIS, 100-400LIS

  
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JeffreyG
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Feb 24, 2011 18:41 |  #4

Yes, the 1D bodies move the focus motor faster. You can really notice it on a very slow lens like the 85L, but I imagine the relative difference exists with all lenses.


My personal stuff:http://www.flickr.com/​photos/jngirbach/sets/ (external link)
I use a Canon 5DIII and a Sony A7rIII

  
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Darkwand
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Feb 24, 2011 18:52 |  #5

it's not only the 1D bodies which are faster then other cameras.
I remember testing the 100-400L on the 500D and 50D in the store and the 50D was much faster at focusing. The Rebels dont' have neat things like extreme out of focus detection though.


Adrian My Flickr (external link)
Canon 5D MkIV, Canon 6D, Canon 7D, Canon 18-55mm 3.5-5.6 IS, 17-55mm f/2.8 IS USM, 50mm f/1.4 USM, 85mm f/1,8 USM, Sigma 70-200mm HSM Macro, 10-20mm f/4-5,6

Manfrotto 055 CXPRO4 + 498RC2, Manfrotto 410 Junior, Elinchrom: RX1200, 2x BRX250 , Dlite-it 4 and 2, Canon 580EXII

  
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HighPixel
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Feb 24, 2011 19:57 |  #6

Thus I have three 1D bodies...Capability there when you need it...and still there when you don't!
Ron


No longer actively shooting...
Canon EOS-1DMk.III
| Canon EOS-5DMk.II / BG-E6 | Canon 70-200 2.8LIS Mk.II | 24-70 2.8L | 16-35 2.8LII | Just all kinds of crap...|RonBaltazar.com (external link)

  
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Canon1969
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Mar 05, 2011 08:58 as a reply to  @ HighPixel's post |  #7

Thanks folks for confirming what I thought I had read... makes the addition of the 1dIV an easier decision. ;)

Much appreciated!


5D Mark II (gripped) | 24-105mm f/4.0L IS | 70-200mm f/2.8L IS II | 85mm f/1.2L IS II | 100mm f/2.8L Macro IS

  
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Ring USM & 1-Series Bodies Question
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