Focusing with the DA*200 f2.8

Giklab · 04-25-2012, 12:50 PM

The same thing happens with my Tamron 70-300 VC. The ficus goes from infinity to MFD and back. If it doesn't find focus it stops there and I need to press again. Stop worrying already! : D

PS Did the forums get new Smileys by any chance?

Chaos_Realm · 04-25-2012, 07:27 PM

Originally posted by ide508

Thank you eddie for that return.
I feared that it "might" be a sign of SDM failure...
Cheers
Bernard

I highly doubt your lens will have an sdm failure,
I haven't heard of any failures to this point with the 200mm 2.8. And based on this survey no-one else has either.
You can rest easy tonight.

**Canada_Rockies** · 04-25-2012, 08:09 PM

Originally posted by ide508

Thank you eddie for that return.
I feared that it "might" be a sign of SDM failure...
Cheers
Bernard

No, SDM failure is when the lens motor will not move the focus elements, not when it misses focus.

ide508 · 04-25-2012, 11:28 PM

Originally posted by Giklab

The same thing happens with my Tamron 70-300 VC. The ficus goes from infinity to MFD and back. If it doesn't find focus it stops there and I need to press again. Stop worrying already! : D
PS Did the forums get new Smileys by any chance?

Originally posted by Chaos_Realm

I highly doubt your lens will have an sdm failure,
I haven't heard of any failures to this point with the 200mm 2.8. And based on this survey no-one else has either.
You can rest easy tonight.

Originally posted by Canada_Rockies

No, SDM failure is when the lens motor will not move the focus elements, not when it misses focus.

Thank you all for those precisions !
I went to a quick search about SDM failure, and for sure it's not what experienced, knock on wood

According to that survey, it looks like the one I bought might not be a recent one according to the serial n°...

I'm not worrying that much, 'cause here in Belgium we have a two years warranty period

Cheers
Bernard

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04-25-2012, 12:50 PM	#16
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182	The same thing happens with my Tamron 70-300 VC. The ficus goes from infinity to MFD and back. If it doesn't find focus it stops there and I need to press again. Stop worrying already! : D PS Did the forums get new Smileys by any chance?

04-25-2012, 07:27 PM	#17
Chaos_Realm Veteran Member Join Date: Feb 2011 Location: Melbourne, Australia Photos: Gallery \| Albums Posts: 1,251	Originally posted by ide508 Thank you eddie for that return. I feared that it "might" be a sign of SDM failure... Cheers Bernard I highly doubt your lens will have an sdm failure, I haven't heard of any failures to this point with the 200mm 2.8. And based on this survey no-one else has either. You can rest easy tonight.

04-25-2012, 08:09 PM	#18
Canada_Rockies Loyal Site Supporter Join Date: Nov 2007 Location: Sparwood, BC, Canada Photos: Gallery \| Albums Posts: 12,385	Originally posted by ide508 Thank you eddie for that return. I feared that it "might" be a sign of SDM failure... Cheers Bernard No, SDM failure is when the lens motor will not move the focus elements, not when it misses focus.

04-25-2012, 11:28 PM	#19
ide508 Junior Member Join Date: Dec 2010 Location: Gistoux Belgium Posts: 34 Original Poster	Originally posted by Giklab The same thing happens with my Tamron 70-300 VC. The ficus goes from infinity to MFD and back. If it doesn't find focus it stops there and I need to press again. Stop worrying already! : D PS Did the forums get new Smileys by any chance? Originally posted by Chaos_Realm I highly doubt your lens will have an sdm failure, I haven't heard of any failures to this point with the 200mm 2.8. And based on this survey no-one else has either. You can rest easy tonight. Originally posted by Canada_Rockies No, SDM failure is when the lens motor will not move the focus elements, not when it misses focus. Thank you all for those precisions ! I went to a quick search about SDM failure, and for sure it's not what experienced, knock on wood According to that survey, it looks like the one I bought might not be a recent one according to the serial n°... I'm not worrying that much, 'cause here in Belgium we have a two years warranty period Cheers Bernard