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**barondla** · 07-05-2013, 05:32 AM

Originally posted by Digitalis

Even the DA15mm f/4 can have considerable problems with flare and hot spots when used for IR.

Really? I have been told by other IR shooters that the DA15 is the lens for IR and that it has no problem with hot spots. Was considering buying one and a converted camera. Already have the Sigma 8-16 and Pentax 12-24..
thanks
barondla

normhead · 07-08-2013, 03:19 PM

Quote:

Guys one question for you that own that lens.. How annoying is the fact that you can't see the 8 and 9 mm at the exif and also not able to auto correct on lightroom for example.. Also does this creates any issues with SR?? Thanks in advance..

It doesn't bother me, and I've had no issues with shake reduction. And it's an amazing lens.

Cross posted from post your photos....

I took my grandson over to see City Hall in Toronto. We did see the Henry Moore, but I didn't take a picture of it. There was a lot of work by some very good photographers as well as other artists at this huge show. Other images, a big wedding at St. Andrew's and the old Court House. The SIgma 8-16 was my walk around lens for the day.

**dadipentak** · 07-10-2013, 07:51 PM - **1 Like**

carrrlangas · 07-11-2013, 01:47 AM

I think 15mm is kind of the limit for non perspective corrected arquitechture... But I don´t have any real experience

normhead · 07-15-2013, 05:13 AM

Originally posted by carrrlangas

I think 15mm is kind of the limit for non perspective corrected arquitechture... But I don´t have any real experience

According to photozone the 8-16 is corrected ( barrel distortion and pincushion corrected) down to 12mm... if that's what you're asking. But it's still quite good, all the way dow to 8 mm.

Jably · 07-15-2013, 12:21 PM - **2 Likes**

Ok so for the IR, the Sigma 8-16 has some times hotspots, some other times don't, but at f8 you can barely see one :

K-01 IR converted 665nm

**barondla** · 07-20-2013, 04:52 AM

Super image Jably. like the pink foliage. Where did you have the K-01 converted? Have been wondering how the K-01and Sigma 8-16 would work for IR. you have answerd both questions with 1 shot. Now I want a converted camera for my Sigma.
thanks
barondla

**dadipentak** · 07-20-2013, 05:50 AM

I was tempted to post this in the "Insects" thread ;~)

iittoo · 07-22-2013, 06:25 AM

Taken at Singapore's Garden By The Bay

Jably · 07-23-2013, 01:25 AM

Originally posted by barondla

Super image Jably. like the pink foliage. Where did you have the K-01 converted? Have been wondering how the K-01and Sigma 8-16 would work for IR. you have answerd both questions with 1 shot. Now I want a converted camera for my Sigma.
thanks
barondla

Thanks barondla !
I bought it from a seller on ebay. Just type "infrared converted" and you'll find him. Indedd, it performs pretty well but not as well as with the FA 31. Also I don't understand why but with the same WB, i get differents colours and rendition between these 2 lenses.

johnc · 07-27-2013, 01:00 PM - **1 Like**

Next time I am taking a tripod! Such a great city for nocturnal photography. More later I hope!

Verticals corrected in LR5 - such a great new feature, worth the upgrade price alone.

Thanks for looking!
John

**newmikey** · 07-27-2013, 03:23 PM - **1 Like**

**dunerunner** · 07-27-2013, 04:05 PM

Originally posted by newmikey

Great use of super wide angle, how wide did you shoot this one? Think I'm going to need one of these

**newmikey** · 07-28-2013, 01:58 AM

Originally posted by dunerunner

Great use of super wide angle, how wide did you shoot this one? Think I'm going to need one of these

This one was shot at 14mm in order to keep the relative size of the clump of trees reasonable.

**dadipentak** · 07-29-2013, 06:45 PM

07-10-2013, 07:51 PM - 1 Like	#438
dadipentak Site Supporter Join Date: Jul 2008 Location: Baltimore, Maryland Photos: Gallery Posts: 11,590	Last edited by dadipentak; 07-10-2013 at 08:01 PM.

07-27-2013, 01:00 PM - 1 Like	#446
johnc Veteran Member Join Date: Feb 2011 Location: United Kingdom Photos: Albums Posts: 735	Night falls at the Dresden Semperopera - Handheld. Next time I am taking a tripod! Such a great city for nocturnal photography. More later I hope! Verticals corrected in LR5 - such a great new feature, worth the upgrade price alone. Thanks for looking! John

07-29-2013, 06:45 PM	#450
dadipentak Site Supporter Join Date: Jul 2008 Location: Baltimore, Maryland Photos: Gallery Posts: 11,590	My House

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07-05-2013, 05:32 AM	#436
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,717	Originally posted by Digitalis Even the DA15mm f/4 can have considerable problems with flare and hot spots when used for IR. Really? I have been told by other IR shooters that the DA15 is the lens for IR and that it has no problem with hot spots. Was considering buying one and a converted camera. Already have the Sigma 8-16 and Pentax 12-24.. thanks barondla

07-08-2013, 03:19 PM	#437
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	Quote: Guys one question for you that own that lens.. How annoying is the fact that you can't see the 8 and 9 mm at the exif and also not able to auto correct on lightroom for example.. Also does this creates any issues with SR?? Thanks in advance.. It doesn't bother me, and I've had no issues with shake reduction. And it's an amazing lens. Cross posted from post your photos.... I took my grandson over to see City Hall in Toronto. We did see the Henry Moore, but I didn't take a picture of it. There was a lot of work by some very good photographers as well as other artists at this huge show. Other images, a big wedding at St. Andrew's and the old Court House. The SIgma 8-16 was my walk around lens for the day.

07-11-2013, 01:47 AM	#439
carrrlangas Veteran Member Join Date: Mar 2012 Location: Joensuu (Finland) Photos: Gallery Posts: 1,761	I think 15mm is kind of the limit for non perspective corrected arquitechture... But I don´t have any real experience

07-15-2013, 05:13 AM	#440
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	Originally posted by carrrlangas I think 15mm is kind of the limit for non perspective corrected arquitechture... But I don´t have any real experience According to photozone the 8-16 is corrected ( barrel distortion and pincushion corrected) down to 12mm... if that's what you're asking. But it's still quite good, all the way dow to 8 mm.

07-15-2013, 12:21 PM - 2 Likes	#441
Jably New Member Join Date: Apr 2013 Photos: Albums Posts: 15	Ok so for the IR, the Sigma 8-16 has some times hotspots, some other times don't, but at f8 you can barely see one : K-01 IR converted 665nm

07-20-2013, 04:52 AM	#442
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,717	Super image Jably. like the pink foliage. Where did you have the K-01 converted? Have been wondering how the K-01and Sigma 8-16 would work for IR. you have answerd both questions with 1 shot. Now I want a converted camera for my Sigma. thanks barondla

07-20-2013, 05:50 AM	#443
dadipentak Site Supporter Join Date: Jul 2008 Location: Baltimore, Maryland Photos: Gallery Posts: 11,590	I was tempted to post this in the "Insects" thread ;~)

07-22-2013, 06:25 AM	#444
iittoo Senior Member Join Date: Jul 2012 Location: Singapore Posts: 208	Taken at Singapore's Garden By The Bay

07-23-2013, 01:25 AM	#445
Jably New Member Join Date: Apr 2013 Photos: Albums Posts: 15	Originally posted by barondla Super image Jably. like the pink foliage. Where did you have the K-01 converted? Have been wondering how the K-01and Sigma 8-16 would work for IR. you have answerd both questions with 1 shot. Now I want a converted camera for my Sigma. thanks barondla Thanks barondla ! I bought it from a seller on ebay. Just type "infrared converted" and you'll find him. Indedd, it performs pretty well but not as well as with the FA 31. Also I don't understand why but with the same WB, i get differents colours and rendition between these 2 lenses.

07-27-2013, 03:23 PM - 1 Like	#447
newmikey Site Supporter Join Date: May 2007 Photos: Gallery Posts: 2,289

07-27-2013, 04:05 PM	#448
dunerunner Site Supporter Join Date: Jan 2010 Location: The Black Hills Photos: Gallery \| Albums Posts: 1,109	Originally posted by newmikey Great use of super wide angle, how wide did you shoot this one? Think I'm going to need one of these

07-28-2013, 01:58 AM	#449
newmikey Site Supporter Join Date: May 2007 Photos: Gallery Posts: 2,289	Originally posted by dunerunner Great use of super wide angle, how wide did you shoot this one? Think I'm going to need one of these This one was shot at 14mm in order to keep the relative size of the clump of trees reasonable.

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