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Forum: Sold Items 10-07-2018, 11:30 AM  
For Sale - Sold: IRIX 15mm f/2.4 Blackstone Lens
Posted By saper
Replies: 3
Views: 895
Hi Mark,

I can hardly judge image quality in corners with downscaled samples. May I ask you to share link to RAW files?

--

With kind regards, Oleg
Forum: Sold Items 10-03-2018, 05:11 PM  
For Sale - Sold: IRIX 15mm f/2.4 Blackstone Lens
Posted By saper
Replies: 3
Views: 895
Hello Mark,

Could you please share few full sized pics to ensure this Irix does not suffer from well-known for this lens central axis asymmetry?

Thanks.

--

Kind regards, Oleg
Forum: Pentax SLR Lens Discussion 01-13-2016, 11:28 PM  
The Impossible lens; Volna 8 50mm 1.2
Posted By saper
Replies: 37
Views: 6,989
Around 3 years ago there was discussion on Russian forum penta-club.ru about ordering K-mount version of Helios 40-2 (85/1.5) from KMZ. The following information was collected:
1. [Official] No problem for KMZ to make K-mount version. There is already a prototype and they were and are producing lens with K-mount. Moreover all produced lens of same type are equal to each other except tail part which changes depending on mount type.
2. [Official] To make K-mount version for the price of Canon or Nikon version, KMZ have to produce at least 50 lens. So, KMZ asked penta-club community to find enough people ready to invest into minimal series.
3. [Insider] Quality is expected to be good though there might be some bad samples (2-3 per 100).
4. [Investigation] Lens are really made in Russia not China.
Community was unable to find enough people to order 50 lens therefore this Helios 40-2 club "activity" stuck at late 2012.
Forum: Pentax Forums Giveaways 12-13-2014, 04:56 PM  
3 Million Post Giveaway: Confirm your entry!
Posted By saper
Replies: 2,854
Views: 110,813
I am in :)
Forum: Pentax Forums Giveaways 12-12-2014, 04:36 AM  
Win an FA 31mm Ltd: PF 3 million post giveaway!
Posted By saper
Replies: 2,237
Views: 127,555
Let me in [emoji1]
Forum: Pentax Forums Giveaways 10-30-2014, 06:03 AM  
Poll: Lens Tournament: DA 15mm F4 Limited vs FA 31mm F1.8 Limited
Posted By saper
Replies: 59
Views: 8,348
For me DA15 has a kind of polarizer effect, i.e. shots have deep blue sky after processing. Besides this, smaller size and a bit better bokeh, it doesn't differ from DA12-24/4 IMHO.

P.S. I am not that big fan of star effect it produce on long exposures for light sources.
Forum: Pentax Forums Giveaways 10-30-2014, 05:20 AM  
Poll: Lens Tournament: DA 15mm F4 Limited vs FA 31mm F1.8 Limited
Posted By saper
Replies: 59
Views: 8,348
I have both lens and fully agree with Sandy's opinion. DA15 knows only one trick but does it well. My voice goes for FA31!
Forum: Digital Processing, Software, and Printing 07-22-2014, 04:45 AM  
How to achieve this 3Dish effect
Posted By saper
Replies: 10
Views: 1,309
I agree: this 3D feeling come from original BW shot made with large format camera.
Forum: Pentax K-3 12-27-2013, 05:53 AM  
Does Pentax make the sensor for K3?
Posted By saper
Replies: 31
Views: 3,446
Sony provide Pentax with their standard CMOS matrix, i.e. they do not perform its R&D per Pentax specs. However the sensor sandwich (matrix + AA/color filter) is made by Sony at its factories according to the Pentax requirements. Last K-5/3 Pentax cameras use Pentax home developed primary color filter.
Forum: Pentax K-3 12-27-2013, 04:04 AM  
Does Pentax make the sensor for K3?
Posted By saper
Replies: 31
Views: 3,446
I think it would be easier to check dxomark.com for camera sensors rating. Canon sensors are not winners today :p
Forum: Pentax K-3 12-27-2013, 01:54 AM  
Does Pentax make the sensor for K3?
Posted By saper
Replies: 31
Views: 3,446
There were many talks everywhere and most concluded it's Sony in K3 :-)
Forum: Pentax Medium Format 12-27-2013, 01:51 AM  
Could next 645D be with out miror?
Posted By saper
Replies: 31
Views: 3,074
This will not help to reduce camera size unless Ricoh decide to move with new bayonet but it doesn't look they would. Thus there are not so many benefits to move 645D to mirrorless world. Instead they can make long time mirror lock function to let camera act like any mirrorless.
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