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12-21-2008, 05:23 PM   #1
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Info about DA 17-70 (sealing)

Dear friends, first of all my compliments for this splendid forum. Here Massimo from Latina, Italy.
I have a question:
I want to know if DA 17-70 is weather sealind or "partial" weather sealing:
for example, I have read that the lens has the seal on the bayonet and then the sealing of the srl body is kept.
Is it true?
Best regards.

Massimo Lucio.

12-21-2008, 08:15 PM   #2
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QuoteOriginally posted by manowar1978 Quote
Dear friends, first of all my compliments for this splendid forum. Here Massimo from Latina, Italy.
I have a question:
I want to know if DA 17-70 is weather sealind or "partial" weather sealing:
for example, I have read that the lens has the seal on the bayonet and then the sealing of the srl body is kept.
Is it true?
Best regards.

Massimo Lucio.
Yes, the DA17-70 is partially weather sealed, as the lens mount has a rubber gasket like the DA* lenses but the telescoping barrel does not have special seals. The fit is quite good, however, so I think that it would be safe in most outdoor conditions short of being immersed in water.

The DA17-70 is a very nicely-made lens IMO.
12-22-2008, 01:52 AM   #3
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QuoteOriginally posted by jamesk8752 Quote
Yes, the DA17-70 is partially weather sealed, as the lens mount has a rubber gasket like the DA* lenses but the telescoping barrel does not have special seals. The fit is quite good, however, so I think that it would be safe in most outdoor conditions short of being immersed in water.

The DA17-70 is a very nicely-made lens IMO.
Thanks for you response James.
to me interest that the body of my K10 remains totally sealed. So the 17-70
is a good choice for my purposes.

Do you know also others DA lens partially sealed?
Best regards

Massimo Lucio
12-22-2008, 01:52 AM   #4
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Hi,

Found this while perusing a link that another kind member sent me.

QuoteQuote:
See:

HTML Code:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=28163020
[John C is the product development manager of Pentax USA]


12-22-2008, 05:42 AM   #5
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Oh thank God it's about weather sealing. I was imagining this was about using the 17-70 as a club for seals... which it definitely isn't suitable for...
12-22-2008, 07:19 AM   #6
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Shocked

Although I believe the Bigma would be more suitable for that purpose
12-22-2008, 08:28 AM   #7
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QuoteOriginally posted by manowar1978 Quote
Thanks for you response James.
to me interest that the body of my K10 remains totally sealed. So the 17-70
is a good choice for my purposes.
That sounds right.

QuoteOriginally posted by manowar1978 Quote
Do you know also others DA lens partially sealed?
Not that I know of. By the way, if you have not found Bojidar's site, you can find all information about everything K-mount related that Pentax has ever produced here:

Welcome to Bojidar Dimitrov's Pentax K-Mount Page

Cheers!
12-22-2008, 03:18 PM   #8
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QuoteOriginally posted by Ivan Glisin Quote
That sounds right.



Not that I know of. By the way, if you have not found Bojidar's site, you can find all information about everything K-mount related that Pentax has ever produced here:

Welcome to Bojidar Dimitrov's Pentax K-Mount Page

Cheers!
Thanks a lot.

Massimo Lucio

12-22-2008, 04:01 PM   #9
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is it just me or wouldnt pentax benefit from releasing an affordable weather sealed prime?
12-22-2008, 10:49 PM   #10
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I'm thinking of getting the 17-70 for my workhorse portrait lens, mostly for family portraits. For schools, it's just shoot shoot shoot. I don't want to be changing lenses. And since I usually shoot at f/8 and f/11 I don't need that fast aperture.

I can use this for wider family shots and tighter shots without changing lenses. I used the Canon 24-70 and focal length range was just right.

I read on the Photozone site that the AF speed was quick. How does it compare to the 16-50/50-135?
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