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**pepperberry farm** · 07-23-2017, 10:52 AM

now that you have both - do some back-to-back shooting and you'll be able to see the difference....

**KC0PET** · 07-23-2017, 07:13 PM - **2 Likes**

K-3 with the DA 15. This is Point Betsie Lighthouse in MI.

---------- Post added 07-23-17 at 09:15 PM ----------

Originally posted by butangmucat

My problem is that because I am planning on going FF, I will need a below-20 WA lens, and I have chosen a 151B because I saw one, but do I still have to keep the DA15?

通过我的 Nexus 6P 上的 Tapatalk发言

I would keep the DA 15 IMO. I don't know how it will play on FF, but there are so many good things about that lens.

---------- Post added 07-23-17 at 09:38 PM ----------

Another DA 15 shot.

**pepperberry farm** · 07-24-2017, 04:00 AM - **2 Likes**

butangmucat · 07-24-2017, 08:33 AM

All at f5.6. The corners seem to be pretty bad. Does my copy need a service?

**KC0PET** · 07-24-2017, 03:56 PM

Originally posted by butangmucat

All at f5.6. The corners seem to be pretty bad. Does my copy need a service?

Yes, definitely something going on there, particularly on the left side of the photos. I looks like "reciprocity failure" which is something I haven't seen since shooting film.

**pepperberry farm** · 07-25-2017, 03:19 AM - **2 Likes**

there's a very good lens buried in here amongst all the f1.2 hype:

now that I have the metering sorted and can actually shoot at something other than f1.2, there's a lot to this lens....

ChristianRock · 07-25-2017, 04:30 AM - **1 Like**

Loving the look of that Porst... Who makes them?

**pepperberry farm** · 07-25-2017, 04:49 AM

Originally posted by ChristianRock

Loving the look of that Porst... Who makes them?

depends on who is talking... Porst was a German camera equipment seller, but of mostly rebranded equipment..

the 55mm f1.2 is most likely a Cosina-manufactured rebrand of a Tomioka design...

**pepperberry farm** · 07-26-2017, 03:11 AM - **1 Like**

**paulh** · 07-26-2017, 12:46 PM - **1 Like**

Originally posted by pepperberry farm

now that I have the metering sorted and can actually shoot at something other than f1.2, there's a lot to this lens....

Looks like a winner to me!

Great blue heron watching over the lake at sunset. Super Tak 105/2.8 on *ist D:

ChristianRock · 07-26-2017, 03:05 PM - **1 Like**

I'm probably overusing those film emulations...

K 55 f2

Sigma 30 1.4 Art (with Nikon Linear Polarizer)

**pepperberry farm** · 07-26-2017, 04:03 PM

I'll probably be doing some comparisons of my 50/55mm lenses next month, including my K55/2 and A50/1.4.....

(edited for correction)

ChristianRock · 07-26-2017, 07:27 PM

Originally posted by pepperberry farm

I'll probably be doing some comparisons of my 50/55mm lenses next month, including my K55/2 and A50/1.2.....

You have an A 50 1.2? In addition to the Porst 55 1.2?

**pepperberry farm** · 07-26-2017, 07:58 PM

oops - no, an A50/1.4

(sorry)

**KC0PET** · 07-26-2017, 08:10 PM

Originally posted by ChristianRock

I'm probably overusing those film emulations...

The first time I read that I thought you said "film emulsions"

Which software are you using?

07-24-2017, 04:00 AM - 2 Likes	#1863
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	K-50 with Tamron Adaptall 2 72B - 90mm f2.8 Macro

07-24-2017, 08:33 AM	#1864
butangmucat Veteran Member Join Date: Jul 2016 Posts: 709	Some SMC DA15 Shots All at f5.6. The corners seem to be pretty bad. Does my copy need a service?

07-25-2017, 03:19 AM - 2 Likes	#1866
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	K-3 with Porst Color Reflex MC Auto 55mm f1.2 there's a very good lens buried in here amongst all the f1.2 hype: now that I have the metering sorted and can actually shoot at something other than f1.2, there's a lot to this lens....

07-26-2017, 03:11 AM - 1 Like	#1869
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	K-3 with Tamron Adaptall-2 SP 72B

07-26-2017, 04:03 PM	#1872
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	I'll probably be doing some comparisons of my 50/55mm lenses next month, including my K55/2 and A50/1.4..... (edited for correction) Last edited by pepperberry farm; 07-26-2017 at 08:09 PM.

07-23-2017, 10:52 AM	#1861
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	now that you have both - do some back-to-back shooting and you'll be able to see the difference....

07-23-2017, 07:13 PM - 2 Likes	#1862
KC0PET Loyal Site Supporter Join Date: Oct 2015 Location: Central Missouri Photos: Gallery \| Albums Posts: 6,274	K-3 with the DA 15. This is Point Betsie Lighthouse in MI. ---------- Post added 07-23-17 at 09:15 PM ---------- Originally posted by butangmucat My problem is that because I am planning on going FF, I will need a below-20 WA lens, and I have chosen a 151B because I saw one, but do I still have to keep the DA15? 通过我的 Nexus 6P 上的 Tapatalk发言 I would keep the DA 15 IMO. I don't know how it will play on FF, but there are so many good things about that lens. ---------- Post added 07-23-17 at 09:38 PM ---------- Another DA 15 shot.

07-24-2017, 03:56 PM	#1865
KC0PET Loyal Site Supporter Join Date: Oct 2015 Location: Central Missouri Photos: Gallery \| Albums Posts: 6,274	Originally posted by butangmucat All at f5.6. The corners seem to be pretty bad. Does my copy need a service? Yes, definitely something going on there, particularly on the left side of the photos. I looks like "reciprocity failure" which is something I haven't seen since shooting film.

07-25-2017, 04:30 AM - 1 Like	#1867
ChristianRock Pentaxian Join Date: Jul 2013 Location: People's Republic of America Photos: Gallery \| Albums Posts: 9,912	Loving the look of that Porst... Who makes them?

07-25-2017, 04:49 AM	#1868
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	Originally posted by ChristianRock Loving the look of that Porst... Who makes them? depends on who is talking... Porst was a German camera equipment seller, but of mostly rebranded equipment.. the 55mm f1.2 is most likely a Cosina-manufactured rebrand of a Tomioka design...

07-26-2017, 12:46 PM - 1 Like	#1870
paulh Site Supporter Join Date: Sep 2010 Location: DFW Texas/Ventura County, CA Photos: Gallery \| Albums Posts: 33,319	Originally posted by pepperberry farm now that I have the metering sorted and can actually shoot at something other than f1.2, there's a lot to this lens.... Looks like a winner to me! Great blue heron watching over the lake at sunset. Super Tak 105/2.8 on *ist D:

07-26-2017, 03:05 PM - 1 Like	#1871
ChristianRock Pentaxian Join Date: Jul 2013 Location: People's Republic of America Photos: Gallery \| Albums Posts: 9,912	I'm probably overusing those film emulations... K 55 f2 Sigma 30 1.4 Art (with Nikon Linear Polarizer)

07-26-2017, 07:27 PM	#1873
ChristianRock Pentaxian Join Date: Jul 2013 Location: People's Republic of America Photos: Gallery \| Albums Posts: 9,912	Originally posted by pepperberry farm I'll probably be doing some comparisons of my 50/55mm lenses next month, including my K55/2 and A50/1.2..... You have an A 50 1.2? In addition to the Porst 55 1.2?

07-26-2017, 07:58 PM	#1874
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,790 Original Poster	oops - no, an A50/1.4 (sorry)

07-26-2017, 08:10 PM	#1875
KC0PET Loyal Site Supporter Join Date: Oct 2015 Location: Central Missouri Photos: Gallery \| Albums Posts: 6,274	Originally posted by ChristianRock I'm probably overusing those film emulations... The first time I read that I thought you said "film emulsions" Which software are you using?

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