70-200 2.8 IS. AF kinda slow?? - FM Forums

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Archive 2009 · 70-200 2.8 IS. AF kinda slow??

stiksandstones
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p.1 #1 · 70-200 2.8 IS. AF kinda slow??

My 70-200 2.8 IS
It 'seems' like the AF on it is sort of unreliable, especially in AI SERVO. My camera did tip over and fall out of my pelican case 3 weeks ago at a wedding, landed on the end of lens body, denting the filter threads, I used a special vise to bring it back out and my cap/filters fit now, but ever since then it seems like the AF is not perfect?

I will drop it off at CPS when I get a chance, but I always thought AF issues were either on or off, like it either WONT focus at all, or is fine....this sort of "well it seems slower/unreliable" seems a bit odd?

Your thoughts?

Nov 17, 2009 at 10:01 PM

jrscls
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p.1 #2 · 70-200 2.8 IS. AF kinda slow??

Time to send it in. It takes 1/2 second for IS to kick in, but the AF in general should be very fast.

Nov 17, 2009 at 10:14 PM

stiksandstones
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p.1 #3 · 70-200 2.8 IS. AF kinda slow??

I rarely if ever use IS...
Just talking about AF speed.

Nov 17, 2009 at 10:16 PM

RobertLynn
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p.1 #4 · 70-200 2.8 IS. AF kinda slow??

AF speed on the lens is like basically instant.

Nov 17, 2009 at 10:51 PM

tanglefoot47
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p.1 #5 · 70-200 2.8 IS. AF kinda slow??

jrscls wrote:
Time to send it in. It takes 1/2 second for IS to kick in, but the AF in general should be very fast.

1/2 a second? that seems like a long time but I think the AF is almost instant

Nov 17, 2009 at 10:54 PM

scalesusa
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p.1 #6 · 70-200 2.8 IS. AF kinda slow??

If something is bent or cracked internally, the AF can be hanging up, and slow. I'd stop using it before it burns out the motor or something else and get it fixed.

Nov 17, 2009 at 11:08 PM

PierreB
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p.1 #7 · 70-200 2.8 IS. AF kinda slow??

If you have any doubts about it, send it in.

Nov 17, 2009 at 11:11 PM

stiksandstones
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p.1 #8 · 70-200 2.8 IS. AF kinda slow??

PierreB wrote:
If you have any doubts about it, send it in.

Guess you did not see my original post
"i am going to drop it off at CPS"

I was just curious, for curiosity sake.

Nov 17, 2009 at 11:38 PM

PierreB
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p.1 #9 · 70-200 2.8 IS. AF kinda slow??

stiksandstones wrote:
PierreB wrote:
If you have any doubts about it, send it in.

Guess you did not see my original post
"i am going to drop it off at CPS"

I was just curious, for curiosity sake.

I did see your original post but it sounded like you were / are intending to send it to CPS when you get the chance. My 70-200 + 1DMkII were on a tripod and were blown over by the wind (very windy BTW & tripod on uneven ground) and the fall knocked the AF out. It was OK but not great - like the experiences you are describing. I called CPS who said not to use it as there was a chance of greater damage if I did. I realise my post was lacking explanation but I hope I've explained myself a bit better now.

Pierre.

Nov 17, 2009 at 11:52 PM


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