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11-28-2012, 08:54 PM   #1
Chris C.
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DA 50-135mm warm-up time 3 minutes?

Hi all,

I just bought a new DA 50-135mm lens from B&H and noticed it takes around 3 minutes until it starts to autofocus. Is this normal? If I wait 3 minutes it works fine and takes great pictures but if I put it down for 5 or 6 hours then I'll have to wait another 3 minutes until I can shoot with it. Please help! Should I exchange it?

11-28-2012, 09:17 PM   #2
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No its not normal. A lens is not a car that you need to warm it up. I have had a copy of this lens since 2008 and it works instantly. Return it if you can.
11-28-2012, 10:16 PM   #3
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2nd on the exchange it as fast as you can.
11-29-2012, 07:30 AM   #4
Chris C.
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Well I removed lens and cleaned contacts and it now fires up like a jet. Could have been user error!!! but does the lens have some kind of capacitor which it needs to charge if it stays without power for a long time? Works great, but I'm in a pickle

11-29-2012, 07:37 AM   #5
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QuoteOriginally posted by Chris C. Quote
Well I removed lens and cleaned contacts and it now fires up like a jet. Could have been user error!!! but does the lens have some kind of capacitor which it needs to charge if it stays without power for a long time? Works great, but I'm in a pickle
It should fire up like a jet as soon as the camera boots up.
11-29-2012, 10:11 AM   #6
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The cleaning contacts bit suggests to me that the lens just wasn't getting a good power feed from the camera due to dirt/dust/grime/oxidation or whatever, of either then contacts on the lens, or the contacts on the camera body.

If that's all it was, just keep them contacts clean. And no, there is no capacitor in the lens. It is not like a flash.
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