K100D and SDM/HSM lenses

nathanjberry · 03-03-2008, 12:49 PM

I have a K100D and have been noticing that many of the newer lenses coming out have HSM / SDM for faster & quieter autofocus. My question is whether these lenses are compatible with my K100D?

Gooshin · 03-03-2008, 12:50 PM

no, you're SOL

travis_cooper · 03-03-2008, 12:52 PM

Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it.

Gooshin · 03-03-2008, 12:57 PM

Originally posted by travis_cooper

Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it.

yep, if its just the regular and not the super the lenses will focusing using the screw drive in body.

Pentaxke · 03-03-2008, 12:57 PM

Originally posted by travis_cooper

Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it.

That's correct! The K100D will focus properly with the new Pentax SDM lenses... Not the Sigma HSM though, that will be manual focus only.

nathanjberry · 03-03-2008, 12:58 PM

I do not have the K100D Super.

So the lenses are compatible, but just will not have the HSM/SDM feature?

nathanjberry · 03-03-2008, 01:00 PM

Gotcha!

Pentax SDM = good

Sigma HSM = bad

Thanks!

Pentaxke · 03-04-2008, 04:11 PM

Originally posted by nathanjberry

Gotcha!

Pentax SDM = good

Sigma HSM = bad

Thanks!

Well,

you could put it that way. Sigma HSM will function, only the AF won't, that's the difference. If you like manual focus you could use them, but then you are paying for an extra that you can't use...

03-03-2008, 12:49 PM	#1
nathanjberry Inactive Account Join Date: Oct 2007 Location: Tacoma, WA USA Posts: 14	K100D and SDM/HSM lenses I have a K100D and have been noticing that many of the newer lenses coming out have HSM / SDM for faster & quieter autofocus. My question is whether these lenses are compatible with my K100D?

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03-03-2008, 12:50 PM	#2
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	no, you're SOL

03-03-2008, 12:52 PM	#3
travis_cooper Veteran Member Join Date: Dec 2007 Location: Salt Lake City, Utah, USA Photos: Gallery Posts: 300	Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it.

03-03-2008, 12:57 PM	#4
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	Originally posted by travis_cooper Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it. yep, if its just the regular and not the super the lenses will focusing using the screw drive in body.

03-03-2008, 12:57 PM	#5
Pentaxke Veteran Member Join Date: Oct 2006 Location: Belgium Photos: Gallery \| Albums Posts: 476	Originally posted by travis_cooper Just making sure, you don't have the super, right? Because the K100D Super does support the new lenses. However, somebody correct me if I'm wrong, the lenses will still work on your K100D, you just can't get the advantages of the new focusing. They should still focus like all your other lenses, at least that is how I understood it. That's correct! The K100D will focus properly with the new Pentax SDM lenses... Not the Sigma HSM though, that will be manual focus only.

03-03-2008, 12:58 PM	#6
nathanjberry Inactive Account Join Date: Oct 2007 Location: Tacoma, WA USA Posts: 14 Original Poster	I do not have the K100D Super. So the lenses are compatible, but just will not have the HSM/SDM feature?

03-03-2008, 01:00 PM	#7
nathanjberry Inactive Account Join Date: Oct 2007 Location: Tacoma, WA USA Posts: 14 Original Poster	Gotcha! Pentax SDM = good Sigma HSM = bad Thanks!

03-04-2008, 04:11 PM	#8
Pentaxke Veteran Member Join Date: Oct 2006 Location: Belgium Photos: Gallery \| Albums Posts: 476	Originally posted by nathanjberry Gotcha! Pentax SDM = good Sigma HSM = bad Thanks! Well, you could put it that way. Sigma HSM will function, only the AF won't, that's the difference. If you like manual focus you could use them, but then you are paying for an extra that you can't use...