Win a Pentax Limited Lens: Raffle Now Live!

Nicolas06 · 11-28-2014, 02:33 PM

I opened a thread to deal with field curvature of DA15... So as to not polute anymore this thread. For thoses interrested, it is here:https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/280573-da15...ml#post3047732

I'd be glad if one explain me how I can avoid the issue ! Feature or not, it is anoying in some circonstances like architecture.

bernhardn · 11-28-2014, 02:55 PM

One more @ f/8 and iso 800.

FantasticMrFox · 11-28-2014, 03:18 PM

Originally posted by bernhardn

One more @ f/8 and iso 800.

Was that taken with the 16-85?

JinDesu · 11-28-2014, 03:28 PM

Originally posted by bernhardn

One more @ f/8 and iso 800.

I don't know if it's your post processing, but the two images you posted got quite a lot of "snap" to them. They look great.

bernhardn · 11-28-2014, 03:38 PM

Originally posted by FantasticMrFox

Was that taken with the 16-85?

Yes! i just turned down the highlights!

FantasticMrFox · 11-28-2014, 03:56 PM

Originally posted by bernhardn

Yes! i just turned down the highlights!

Nice - wasn't quite sure because the thread temporarily derailed into some field curvature discussion with sample pictures of other lenses.

I'm thinking that it'd be the perfect upgrade from my 18-55 WR kit, because I spend a lot of time in adverse conditions (WR), like to shoot landscapes and don't have a dedicated WA yet (16 mm) and would like some silent, internal focussing.

Have you used the lens in the field yet? What are your first impressions? Is the image quality significantly better compared to the 18-135?

kh1234567890 · 11-28-2014, 04:51 PM

Originally posted by bernhardn

One more @ f/8 and iso 800.

So it's OK at 85mm. What is the wide end like ?

bernhardn · 11-29-2014, 02:41 AM

I'll try to make some pictures outside today.

totsmuyco · 11-29-2014, 03:12 AM

Please post them and give us your review.

FantasticMrFox · 11-29-2014, 03:53 PM

More sample pictures from a German user who purchased the lens today:

Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum

If anyone needs a translation of specific parts, I'd be glad to help

Mistral75 · 11-29-2014, 04:05 PM

Originally posted by FantasticMrFox

More sample pictures from a German user who purchased the lens today:

Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum

If anyone needs a translation of specific parts, I'd be glad to help

Thank you for the link. The apparent absence of lateral chromatic aberration is a blessing. I am copying hereunder the maximal aperture according to the focal length:

16mm - 20mm = f/3.5
21mm - 30mm = f/4
31mm - 67mm = f/4.5
68mm - 85mm = f/5.6

lytrytyr · 11-29-2014, 04:17 PM

Originally posted by FantasticMrFox

More sample pictures from a German user who purchased the lens today:

Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum

The skewed vignetting on FF,
especially towards the 85mm end,
suggests there might be some decentering.

totsmuyco · 11-29-2014, 07:14 PM

With all this talk about decentering, how do you guys deal with it? Do you increase the aperture to have a better depth of field?

Class A · 11-29-2014, 10:11 PM

Originally posted by FantasticMrFox

More sample pictures from a German user who purchased the lens today:

Hmmh, "corners not impressive", "not for pixel peepers", and "fine as a vacation lens" does not sound very confidence inspiring.

Class A · 11-29-2014, 10:13 PM

Originally posted by lytrytyr

The skewed vignetting on FF,
especially towards the 85mm end,
suggests there might be some decentering.

The text explains that the PK-EOS adapter rotates the lens 45 degrees and that there is a rectangular opening at the lens that hence is not oriented correctly anymore.

So no indication of decentering, but an artefact of the adapter.

11-29-2014, 04:05 PM	#671
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by FantasticMrFox More sample pictures from a German user who purchased the lens today: Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum If anyone needs a translation of specific parts, I'd be glad to help Thank you for the link. The apparent absence of lateral chromatic aberration is a blessing. I am copying hereunder the maximal aperture according to the focal length: 16mm - 20mm = f/3.5 21mm - 30mm = f/4 31mm - 67mm = f/4.5 68mm - 85mm = f/5.6

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: SMC Pentax-DA 18-135mm f3.5-5.6 ED AL (IF) DC WR	sholtzma	Sold Items	2	02-05-2014 01:11 PM
For Sale - Sold: Pentax-DA 18-135mm F3.5-5.6 ED AL [IF] DC WR - reduced price	tjwaung	Sold Items	8	12-21-2013 05:56 AM
new smc PENTAX-DA 18-135mm F3.5-5.6ED AL [IF] WR DC	KeesdH	Pentax News and Rumors	227	06-22-2011 03:57 AM
PENTAX-DA 18-135mm F3.5-5.6ED AL [IF] WR D	Fl_Gulfer	Pentax News and Rumors	20	11-26-2010 05:13 PM

11-28-2014, 02:33 PM	#661
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	I opened a thread to deal with field curvature of DA15... So as to not polute anymore this thread. For thoses interrested, it is here:https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/280573-da15...ml#post3047732 I'd be glad if one explain me how I can avoid the issue ! Feature or not, it is anoying in some circonstances like architecture.

11-28-2014, 02:55 PM	#662
bernhardn Forum Member Join Date: Apr 2014 Location: Meppel, Drenthe, The Netherlands Photos: Gallery \| Albums Posts: 70	One more @ f/8 and iso 800.

11-28-2014, 03:18 PM	#663
FantasticMrFox Veteran Member Join Date: Oct 2014 Location: Munich Posts: 2,339	Originally posted by bernhardn One more @ f/8 and iso 800. Was that taken with the 16-85?

11-28-2014, 03:28 PM	#664
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	Originally posted by bernhardn One more @ f/8 and iso 800. I don't know if it's your post processing, but the two images you posted got quite a lot of "snap" to them. They look great.

11-28-2014, 03:38 PM	#665
bernhardn Forum Member Join Date: Apr 2014 Location: Meppel, Drenthe, The Netherlands Photos: Gallery \| Albums Posts: 70	Originally posted by FantasticMrFox Was that taken with the 16-85? Yes! i just turned down the highlights!

11-28-2014, 03:56 PM	#666
FantasticMrFox Veteran Member Join Date: Oct 2014 Location: Munich Posts: 2,339	Originally posted by bernhardn Yes! i just turned down the highlights! Nice - wasn't quite sure because the thread temporarily derailed into some field curvature discussion with sample pictures of other lenses. I'm thinking that it'd be the perfect upgrade from my 18-55 WR kit, because I spend a lot of time in adverse conditions (WR), like to shoot landscapes and don't have a dedicated WA yet (16 mm) and would like some silent, internal focussing. Have you used the lens in the field yet? What are your first impressions? Is the image quality significantly better compared to the 18-135?

11-28-2014, 04:51 PM	#667
kh1234567890 Veteran Member Join Date: Sep 2010 Location: Manchester, UK Photos: Gallery Posts: 2,653	Originally posted by bernhardn One more @ f/8 and iso 800. So it's OK at 85mm. What is the wide end like ?

11-29-2014, 02:41 AM	#668
bernhardn Forum Member Join Date: Apr 2014 Location: Meppel, Drenthe, The Netherlands Photos: Gallery \| Albums Posts: 70	I'll try to make some pictures outside today.

11-29-2014, 03:12 AM	#669
totsmuyco Pentaxian Join Date: Aug 2013 Location: Iloilo City Photos: Gallery Posts: 2,276	Please post them and give us your review.

11-29-2014, 03:53 PM	#670
FantasticMrFox Veteran Member Join Date: Oct 2014 Location: Munich Posts: 2,339	More sample pictures from a German user who purchased the lens today: Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum If anyone needs a translation of specific parts, I'd be glad to help

11-29-2014, 04:17 PM	#672
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by FantasticMrFox More sample pictures from a German user who purchased the lens today: Objektiv HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR - DSLR-Forum The skewed vignetting on FF, especially towards the 85mm end, suggests there might be some decentering.

11-29-2014, 07:14 PM	#673
totsmuyco Pentaxian Join Date: Aug 2013 Location: Iloilo City Photos: Gallery Posts: 2,276	With all this talk about decentering, how do you guys deal with it? Do you increase the aperture to have a better depth of field?

11-29-2014, 10:11 PM	#674
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Originally posted by FantasticMrFox More sample pictures from a German user who purchased the lens today: Hmmh, "corners not impressive", "not for pixel peepers", and "fine as a vacation lens" does not sound very confidence inspiring.

11-29-2014, 10:13 PM	#675
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Originally posted by lytrytyr The skewed vignetting on FF, especially towards the 85mm end, suggests there might be some decentering. The text explains that the PK-EOS adapter rotates the lens 45 degrees and that there is a rectangular opening at the lens that hence is not oriented correctly anymore. So no indication of decentering, but an artefact of the adapter.