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Micro Four Thirds Discuss the newly announced Micro Four Thirds addition to the Four Thirds system family here.

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  #1  
Old 22nd February 2012
ozzie ozzie is offline
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4/3 Lenses on u4/3

I have been using 4/3 lenses 9-18/70-300 and 14-54 mk1 on my pens for some time. Focus is slow but what concerns me is the shutter the lens go through to focus.
I would like to know if this will damage or lessen the life I can expect out of the lens over the long run.
Thanks John
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Old 22nd February 2012
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Re: 4/3 Lenses on u4/3

Realistically I think you can stop worrying about this. The focus motor will be designed to withstand far more actuations than any of us will realistically achieve. In fact, it probably does the mechanism more good than harm to be continually used, like our muscles, as it spreads the lubricant and stops "stickiness".
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Old 23rd February 2012
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Re: 4/3 Lenses on u4/3

Thanks Stephen
They do seem to rattle about trying to get focus so here's hoping no damage is being done
John
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Old 23rd February 2012
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Re: 4/3 Lenses on u4/3

Personally I think it's the zoom mechanism that is first in the firing line. Most lenses get longer as you zoom, and in many cases they carry the motor and aperture mechanism back and forth in the process. The electrical connection to the back of the lens is often a flexi printed circuit - a thin brown thing full of flat wire tracks.

Now they are made to take repeated flexing - I guess printers use them - but they don't go on for ever
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