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Old Jul 22, 2005, 9:46 AM   #1
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g'day all
i am looking to buy the ist DS
i have had a K1000 for a lot of years and know the lenses will work on the ds
but i read some where the ds only has an aperture range f/3.5-5.6 maximum, f/22-38 minimum
have i misunderstood something?
i have a 50mm f1.7, can i use this with the ds at f1.7?
also how does depth of field translate, using the depth of field markers on the lenses?
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Old Jul 22, 2005, 9:57 AM   #2
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I have a 50mm f/1.7 on my *ist DS and it works fine. Needed to change the settings in the menu to use the aperature ring though.
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Old Jul 22, 2005, 12:04 PM   #3
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I have the A 50/1.7 and it shows as 1.7 in the viewfinder as well as the LCD. Same applies to my f/2.8 lenses.

Lou
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Old Jul 22, 2005, 1:50 PM   #4
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"I read some where the ds only has an aperture range f/3.5-5.6 maximum, f/22-38 minimum have i misunderstood something?"

I have a Pentax FA* 28-70 f/2.8 lens and it shows 2.8, along with a Pentax A 85 f/1.4, which shows 1.4 also, so your info seems to be incorrect. They both show the maximum aperture also, although I don't have any lenses with a smaller aperture than 38.

Tom
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Old Jul 25, 2005, 4:32 PM   #5
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Those f numbers sound like they refer to the 18-55 kit lens. This has nothing to do with using older lenses on your DS!

Like others said, just enable "Use aperture ring" in the menu and use "M" mode. Works great! If you have a lens with an "A" position on the aperture ring, leave it there and use "Av" mode, which is even easier!
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