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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 16 Jun 2012 (Saturday) 08:58
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Help from 70-300 F4-5.6 L IS USM owners Please

 
Submariner
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Jun 16, 2012 08:58 |  #1

Picked up my new 70-300 F4-5.6 L IS USM (and 7D this Thursday).
One issue (or may not be?) is the Focus Ring.
Mine has some minor play and you can hear this play, but its slight.
Obviousy I would like to know if this is normal [If it is normal, I would be happy to accept it as it's not bad to live with] but need to know if anything is wrong?

So any owners please respond and describe how yours is [feels and sounds - as much detail as possible please]

Description of issue below:-

a] If say, you try very gently to move the focus ring up and down [vertically] around the shaft of the lens or
b] slightly wiggle the focus ring to and fro, holding it with thumb and index finger [around the length of the shaft] you can see a tiny amount of movement and hear the play. Were only talking a very small amount but you can hear it [a sort of fairly faint tuck tuck/ ever so quiet clunking noise at each end of the play].
The ring actually rotates very smoothly once in motion, it only has a slight wisper sound [LIke well greased bearings] as it rotates [So that sounds fine].

This sort of play seems a bit like steering wheel slap but the very start of a problem - obviously much much quieter. Its as though the ring is a fraction too big for the shaft.
You can also see the tinyiest amount of movement if you pull and push the ring [extremely gently] from one end of the lens to the other.

Maybe to put it in perspective, it's noticable because of the comparison with the Zoom ring, which has NO PLAY whatsoever; and is super smooth, but just the perfect amount of resistance [LIke you feel it is running on zero tolerance ball bearings packed in grease - all you hear is a sort of whisper of greased perfectly machined bearings]

I guess I'd know I had a problem if say other owners said my focus ring looks, sounds and feels like the zoom ring does [assuming your zoom rins was perfect like mine]

Otherwise pretty pleased with it so far - focuses pretty quickly and even in low light- does OK.


Canon EOS 5DS R, Canon EF 70-200 F2.8 L Mk II IS USM, Canon EF 70-300 F4-5.6 L IS USM, EF 40mm F2.8 STM , RC6 Remote. Canon STE-3 Radio Flash Controller, Canon 600 EX RT x4 , YN 560 MkII x2 ; Bowens GM500PRO x4 , Bowens Remote Control. Bowens Pulsar TX, RX Radio Transmitter and Reciever Cards. Bowens Constant 530 Streamlights 600w x 4 Sold EOS 5D Mk III, 7D, EF 50mm F1.8, 430 EX Mk II, Bowens GM500Rs x4

  
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Skul
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Jun 16, 2012 10:13 |  #2

Trying to contact a friend that has one. Back in a few minutes.

OK, he said no extra movement in any dimension.
Oh, BTW, I've used it myself, and don't recall anything out of the ordinary.




  
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hfgarris
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Jun 16, 2012 11:24 |  #3

I think mine does the same thing ... however it is really, really slight ... perhaps only 1/100" or less. I would think that would be within tolerance, especially since the manual-focus is full-time and the auto-focus mechanism is probably "loosely" coupled through it. Mine moves LESS than the width of one of the rubber ridges on the zoom ring. It does make a slight "tick" as it moves back and forth within the free range.

I wouldn't worry about it if it is the same as mine... :D Great lens!


-howard




  
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Submariner
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Jun 16, 2012 12:34 |  #4

Skul wrote in post #14587413 (external link)
Trying to contact a friend that has one. Back in a few minutes.

OK, he said no extra movement in any dimension.
Oh, BTW, I've used it myself, and don't recall anything out of the ordinary.

Thanks for checking- thats interesting.


Canon EOS 5DS R, Canon EF 70-200 F2.8 L Mk II IS USM, Canon EF 70-300 F4-5.6 L IS USM, EF 40mm F2.8 STM , RC6 Remote. Canon STE-3 Radio Flash Controller, Canon 600 EX RT x4 , YN 560 MkII x2 ; Bowens GM500PRO x4 , Bowens Remote Control. Bowens Pulsar TX, RX Radio Transmitter and Reciever Cards. Bowens Constant 530 Streamlights 600w x 4 Sold EOS 5D Mk III, 7D, EF 50mm F1.8, 430 EX Mk II, Bowens GM500Rs x4

  
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Submariner
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Jun 16, 2012 12:37 |  #5

hfgarris wrote in post #14587641 (external link)
I think mine does the same thing ... however it is really, really slight ... perhaps only 1/100" or less. I would think that would be within tolerance, especially since the manual-focus is full-time and the auto-focus mechanism is probably "loosely" coupled through it. Mine moves LESS than the width of one of the rubber ridges on the zoom ring. It does make a slight "tick" as it moves back and forth within the free range.

I wouldn't worry about it if it is the same as mine... :D Great lens!


-howard

Hi Howard
Thanks when you say It does make a slight "tick" as it moves back and forth within the free range.
Mine does that but does yours "tick" if you sort of rock it rather than rotate it. As if you were checking how tight a fit the ring was on the lens shaft?
Regards
peter


Canon EOS 5DS R, Canon EF 70-200 F2.8 L Mk II IS USM, Canon EF 70-300 F4-5.6 L IS USM, EF 40mm F2.8 STM , RC6 Remote. Canon STE-3 Radio Flash Controller, Canon 600 EX RT x4 , YN 560 MkII x2 ; Bowens GM500PRO x4 , Bowens Remote Control. Bowens Pulsar TX, RX Radio Transmitter and Reciever Cards. Bowens Constant 530 Streamlights 600w x 4 Sold EOS 5D Mk III, 7D, EF 50mm F1.8, 430 EX Mk II, Bowens GM500Rs x4

  
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lannes
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Jun 16, 2012 12:56 |  #6

Mine moves slightly up and down as well, and has a bit of play at the beginning of the rotation


1Dx, 1DM4, 5DM2, 7D, EOS-M, 8-15L, 17-40L, 24 TSE II, 24-105L, 50L, 85L II, 100L, 135L, 200L f/2.8, 300L f/4, 70-200L II, 70-300L, 400Lf/5.6

  
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hfgarris
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Jun 16, 2012 14:51 |  #7

Submariner wrote in post #14587846 (external link)
Hi Howard
Thanks when you say It does make a slight "tick" as it moves back and forth within the free range.
Mine does that but does yours "tick" if you sort of rock it rather than rotate it. As if you were checking how tight a fit the ring was on the lens shaft?
Regards
peter

Mine is smooth and silent when you rotate the manual focus ring. The only very slight "tick" is when you rock it in the tiny free-zone. The "dead-zone" really is minuscule, I would never notice it if I wasn't critically looking for it as a result of your query. I really can't even see the ring move ... more a feel and faint sound that there is any movement at all.

-howard




  
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tovarish
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Jun 16, 2012 15:03 |  #8

I'm holding mine right now, and there is a slight movement and a tick. No big deal. There is something Freudian about this, though.


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sebr
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Jun 16, 2012 15:58 |  #9

Mine has a tiny play. Not really visible, but you can hear it when pulling the focus ring. I think the zoom ring also has a tiny play. It is really barely noticeable and I don't believe this is an issue.


Sebastien
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Submariner
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Jun 16, 2012 21:04 |  #10

Thanks guys sounds as though it a feature!


Canon EOS 5DS R, Canon EF 70-200 F2.8 L Mk II IS USM, Canon EF 70-300 F4-5.6 L IS USM, EF 40mm F2.8 STM , RC6 Remote. Canon STE-3 Radio Flash Controller, Canon 600 EX RT x4 , YN 560 MkII x2 ; Bowens GM500PRO x4 , Bowens Remote Control. Bowens Pulsar TX, RX Radio Transmitter and Reciever Cards. Bowens Constant 530 Streamlights 600w x 4 Sold EOS 5D Mk III, 7D, EF 50mm F1.8, 430 EX Mk II, Bowens GM500Rs x4

  
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JVthePT
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Jun 16, 2012 23:08 |  #11

Thanks a lot!! I've never noticed this on my lens and I just checked mine and it has that slight wiggle and tink. Now it's bound to drive me nuts! Haha!


6D & 7D mark II - Canon 16-35 f/4 IS L, Canon 24-70 f/2.8 L, Canon 24-105 f/4 L IS, Canon 70-200 f/2.8 IS II L, Canon 100-400 f/4.5-5.6 L IS II, Canon 50mm f/1.8 STM, Canon 85 f/1.8, Canon 100 f/2.8 USM macro, Canon EF 1.4x III
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Help from 70-300 F4-5.6 L IS USM owners Please
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