Win a Pentax Limited Lens: Raffle Now Live!

tgchan · 09-14-2017, 02:26 PM

It doesn't have one right?

I have read some threads about a really smooth (like uncomfortably too smooth) zoom throw on some 15-30 2.8, and it started me thinking...

I am considering to buy one and I would like to confirm if it really lacks the zoom lock button.

"and a zoom lock button intended to prevent the zoom from extending when pointed downwards.

Read more at: https://www.pentaxforums.com/lensreviews/hd-pentax-d-fa-24-70mm-f28-ed-sdm-wr.html#ixzz4sgsik7nx"

Last edited by tgchan; 09-14-2017 at 02:45 PM.

**Pentax Syntax** · 09-14-2017, 02:44 PM - **1 Like**

It doesn't have one and doesn't need one. It is made to tight tolerances and the 'zoom' is all internal to the outside protective hood. Great lens!

tgchan · 09-14-2017, 02:47 PM

Originally posted by Pentax Syntax

It doesn't have one and doesn't need one. It is made to tight tolerances and the 'zoom' is all internal to the outside protective hood. Great lens!

Well if the zoom thingy is really loose that button would come handy, but thanks for the confirmation.

**Pentax Syntax** · 09-14-2017, 02:50 PM

Originally posted by tgchan

Well if the zoom thingy is really loose that button would come handy, but thanks for the confirmation.

Just now walked ~ 4 miles with that lens set on 15. Didn't budge when hanging on a shoulder strap on my K-1. Probably the only zoom I have that would not move under those conditions

**clickclick** · 09-14-2017, 04:01 PM

I've never had the zoom creep while walking with this lens mounted to my K1. Even if it did, the worst case would be rotating the zoom ring back to whatever you wanted when using - overall length doesn't change when zooming. As already mentioned, the changes all occur within the lens hood, which also effectively gives more/less hood in keeping with the focal length changes. I would not let the lack of a lock play into the decision process. It really is a very nice lens.

Paul the Sunman · 09-14-2017, 05:11 PM

Completely unnecessary. It's an internal zoom. It doesn't extend.

**bigoak** · 09-15-2017, 06:32 AM

bought a 15-30 and returned it because of this issue. amazon warehouse deal. I know the zoom only extends to the max of the tulip hood, but i just don't feel comfortable with an investment like that having such loose tolerances. might purchase again if i can find one that doesnt creep.

**bigoak** · 09-26-2017, 07:51 AM

update: purchased a new version and the zoom throw is much tighter than that warehouse deal. Not super tight, but enough to hold in place and be able to "feel" the rotation. I'd go so far as to say the 15-20 range is stiffer than the 20-30 range, which would make sense because of the design of the zoom throw.

09-14-2017, 02:26 PM	#1
tgchan Senior Member Join Date: Jul 2014 Location: Poland, Radom Posts: 277	HD Pentax-D FA 15-30mm F2.8 = zoom lock button? It doesn't have one right? I have read some threads about a really smooth (like uncomfortably too smooth) zoom throw on some 15-30 2.8, and it started me thinking... I am considering to buy one and I would like to confirm if it really lacks the zoom lock button. "and a zoom lock button intended to prevent the zoom from extending when pointed downwards. Read more at: https://www.pentaxforums.com/lensreviews/hd-pentax-d-fa-24-70mm-f28-ed-sdm-wr.html#ixzz4sgsik7nx" Last edited by tgchan; 09-14-2017 at 02:45 PM.

09-14-2017, 04:01 PM	#5
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	I've never had the zoom creep while walking with this lens mounted to my K1. Even if it did, the worst case would be rotating the zoom ring back to whatever you wanted when using - overall length doesn't change when zooming. As already mentioned, the changes all occur within the lens hood, which also effectively gives more/less hood in keeping with the focal length changes. I would not let the lack of a lock play into the decision process. It really is a very nice lens. Last edited by clickclick; 09-14-2017 at 06:50 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
HD Pentax D FA 1:2.8 15-30mm ED SDM WR lens club!	johnc	Lens Clubs	724	03-04-2024 11:28 PM
Is distortion normal - Pentax HD PENTAX-D FA 15-30mm f/2.8 ED SDM WR Lens ?	frankoz	Pentax SLR Lens Discussion	20	09-04-2017 05:45 PM
Pentax HD FA 15-30mm F2.8 and 24-70 F2.8 vs. "same" Tamron lenses.	maucard	Pentax SLR Lens Discussion	21	10-01-2016 10:12 AM
Pentax hd pentax-d fa 15-30mm f/2.8 ed sdm wr k-mount lens 21280 special usa new	SteveD	Pentax Price Watch	4	09-13-2016 07:37 PM
Lee Filters SW150 - Tamron 15-30mm adapter fits Pentax 15-30mm variant	qdfb	Pentax SLR Lens Discussion	5	07-16-2016 12:45 PM

09-14-2017, 02:44 PM - 1 Like	#2
Pentax Syntax Loyal Site Supporter Join Date: Feb 2010 Location: Maryland Posts: 595	It doesn't have one and doesn't need one. It is made to tight tolerances and the 'zoom' is all internal to the outside protective hood. Great lens!

09-14-2017, 02:47 PM	#3
tgchan Senior Member Join Date: Jul 2014 Location: Poland, Radom Posts: 277 Original Poster	Originally posted by Pentax Syntax It doesn't have one and doesn't need one. It is made to tight tolerances and the 'zoom' is all internal to the outside protective hood. Great lens! Well if the zoom thingy is really loose that button would come handy, but thanks for the confirmation.

09-14-2017, 02:50 PM	#4
Pentax Syntax Loyal Site Supporter Join Date: Feb 2010 Location: Maryland Posts: 595	Originally posted by tgchan Well if the zoom thingy is really loose that button would come handy, but thanks for the confirmation. Just now walked ~ 4 miles with that lens set on 15. Didn't budge when hanging on a shoulder strap on my K-1. Probably the only zoom I have that would not move under those conditions

09-14-2017, 05:11 PM	#6
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,847	Completely unnecessary. It's an internal zoom. It doesn't extend.

09-15-2017, 06:32 AM	#7
bigoak Site Supporter Join Date: Apr 2017 Location: Bayern Photos: Albums Posts: 186	bought a 15-30 and returned it because of this issue. amazon warehouse deal. I know the zoom only extends to the max of the tulip hood, but i just don't feel comfortable with an investment like that having such loose tolerances. might purchase again if i can find one that doesnt creep.

09-26-2017, 07:51 AM	#8
bigoak Site Supporter Join Date: Apr 2017 Location: Bayern Photos: Albums Posts: 186	update: purchased a new version and the zoom throw is much tighter than that warehouse deal. Not super tight, but enough to hold in place and be able to "feel" the rotation. I'd go so far as to say the 15-20 range is stiffer than the 20-30 range, which would make sense because of the design of the zoom throw.

HD Pentax-D FA 15-30mm F2.8 = zoom lock button?

Win a Pentax Limited Lens: Raffle Now Live!