K3ii & Sigma Art Lens at f1. 4- no problem

digitalandfilm · 04-13-2017, 06:50 AM - **4 Likes**

Palm Sunday in Montreal..

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Unregistered User 8 · 04-13-2017, 07:21 AM

Looks like a great combo, K-3II with Siggy at 1.4 AND the photographer.

Excellent images.

**clickclick** · 04-13-2017, 08:24 AM

I've been looking at that lens wondering if I should succumb to another round of LBA, and I have a K3II. You're not helping me resist the urge! How can I thank you enough?!

**MortenV** · 04-13-2017, 08:27 AM

Which Sigma Art 1.4?

stevebrot · 04-13-2017, 08:56 AM

Originally posted by MortenV

Which Sigma Art 1.4?

What he said ^ ^ ^

Also, what sort of problems were anticipated?

Steve

digitalandfilm · 04-13-2017, 11:49 AM

Originally posted by MortenV

Which Sigma Art 1.4?

This is the Sigma Art 30mm 1.4

---------- Post added 04-13-17 at 02:52 PM ----------

Originally posted by stevebrot

Also, what sort of problems were anticipated?

Steve

Well Steve,

The pixel peepers saw massive purple fringing and distortion.

LR quickly knocked out the fringing and has a lens profile for the Sigma 30mm 1.4 for Pentax.

Surprising to see that Phase One Capture 1 v10.xx Pro didn't have a Pentax profile, yet had it for the Nikon and Canon.

stevebrot · 04-13-2017, 12:00 PM

Originally posted by digitalandfilm

LR quickly knocked out the fringing and has a lens profile for the Sigma 30mm 1.4 for Pentax.

The miracle of software to the rescue again! There is some unavoidable loss of detail in distortion correction and I would been surprised to see detectable PF in the example subject.

Addendum: I looked at the available reviews on this site and agree with the reviewer's assessment regarding PF and distortion when example photos were provided.

Still though, I am pleased you are happy with and find your purchase useful

BTW...the lack of profiles for Pentax in Capture 1 is not accidental.

Steve

Last edited by stevebrot; 04-13-2017 at 12:15 PM.

swanlefitte · 04-13-2017, 05:24 PM

I really like the fourth one but I would crop the bottom. It distracts from the beautiful arches. When I scroll down to where the top is just on screen It crops all the bright area beneath the lower railing and I like it better. You inspired me today, thanks.

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04-13-2017, 07:21 AM	#2
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Looks like a great combo, K-3II with Siggy at 1.4 AND the photographer. Excellent images.

04-13-2017, 08:24 AM	#3
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	I've been looking at that lens wondering if I should succumb to another round of LBA, and I have a K3II. You're not helping me resist the urge! How can I thank you enough?!

04-13-2017, 08:27 AM	#4
MortenV Site Supporter Join Date: Feb 2013 Posts: 41	Which Sigma Art 1.4?

04-13-2017, 08:56 AM	#5
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by MortenV Which Sigma Art 1.4? What he said ^ ^ ^ Also, what sort of problems were anticipated? Steve

04-13-2017, 11:49 AM	#6
digitalandfilm Forum Member Join Date: Nov 2011 Photos: Gallery Posts: 72 Original Poster	Originally posted by MortenV Which Sigma Art 1.4? This is the Sigma Art 30mm 1.4 ---------- Post added 04-13-17 at 02:52 PM ---------- Originally posted by stevebrot Also, what sort of problems were anticipated? Steve Well Steve, The pixel peepers saw massive purple fringing and distortion. LR quickly knocked out the fringing and has a lens profile for the Sigma 30mm 1.4 for Pentax. Surprising to see that Phase One Capture 1 v10.xx Pro didn't have a Pentax profile, yet had it for the Nikon and Canon.

04-13-2017, 12:00 PM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by digitalandfilm LR quickly knocked out the fringing and has a lens profile for the Sigma 30mm 1.4 for Pentax. The miracle of software to the rescue again! There is some unavoidable loss of detail in distortion correction and I would been surprised to see detectable PF in the example subject. Addendum: I looked at the available reviews on this site and agree with the reviewer's assessment regarding PF and distortion when example photos were provided. Still though, I am pleased you are happy with and find your purchase useful BTW...the lack of profiles for Pentax in Capture 1 is not accidental. Steve Last edited by stevebrot; 04-13-2017 at 12:15 PM.

04-13-2017, 05:24 PM	#8
swanlefitte Pentaxian Join Date: May 2015 Location: Minneapolis Photos: Gallery Posts: 4,068	I really like the fourth one but I would crop the bottom. It distracts from the beautiful arches. When I scroll down to where the top is just on screen It crops all the bright area beneath the lower railing and I like it better. You inspired me today, thanks.