Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
09-19-2017, 06:04 AM   #1
Veteran Member
hoanpham's Avatar

Join Date: Nov 2009
Location: Strand
Photos: Gallery | Albums
Posts: 1,366
Pentax NOCTA infrared

Anyone has info about this?

Asahi Pentax NOCTA Vintage Infrared Camera w/ 300mm f/3.3 NC-Takumar- VERY RARE | eBay

09-19-2017, 06:20 AM   #2
Site Supporter
Site Supporter
timw4mail's Avatar

Join Date: Apr 2017
Location: Driving a Mirage
Photos: Gallery | Albums
Posts: 1,662
It's an Infrared camera, primarily for police/military. That seems to be the same one that's been on eBay for a while due to its inflated price tag.

They are very rare, but the market isn't really there.
09-19-2017, 12:48 PM   #3
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 49,085
I wonder if this would quality for our camera database- technically it's a Pentax!

Adam Webmaster (Site Usage Guide | Site Help | My Photography) server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

09-19-2017, 01:20 PM   #4
angerdan's Avatar

Join Date: Feb 2015
Photos: Gallery | Albums
Posts: 1,202
There's already a thread about the Asahi Pentax Nocta:
Pentax Nocta brochure -
Pentax NOCTA
Twenty Questions with Eric Hendrickson - Columns |

09-19-2017, 02:49 PM - 1 Like   #5

Join Date: Jun 2008
Location: Idaho
Photos: Gallery
Posts: 885
As a collector's item, it could well be worth the $7k asking price, but one of today's converted DSLRs could put it to shame. The Nocta used a vacuum tube converter to convert an "electron image" created by a front electron-emissive element to a visible image using a phosphorescent screen which gave a grainy, low resolution image. That image was captured on film. These tubes were fairly sensitive to IR and could go a bit further into the IR range than today's DSLR sensors. They required a high voltage supply (15 to 20 kilovolts) and some had x-ray emission issues (leaded glass was used in the lenses of some direct view IR scopes). At that time, it was the only practical way to see in infrared realtime. There were infrared goggles used in many film processing labs so loading and handling of film could be done (not infrared film!). Nowadays film labs use ................

If I were a camera collector, would probably be clamoring to get a Nocta for my collection, but if you want an IR camera, there are substantially better options today.
09-19-2017, 02:56 PM   #6
Lens Hoarder
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: St. Louis, MO
Photos: Gallery | Albums
Posts: 25,188
Nope. That one's above my discretionary authority, and I'm not going to the well for a shelf queen.
09-19-2017, 06:46 PM   #7
Lens Hoarder
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: St. Louis, MO
Photos: Gallery | Albums
Posts: 25,188
QuoteOriginally posted by dcshooter Quote
If I had the luxury of dropping several thousand dollars for a Pentax ultra-rarity, it would definitely be the Ultra Achromatic Takumar 85mm. Supposedly only ~30 ever made and one's on eBay sitting with no bids at $4k:

Pentax Asahi Takumar ultra-achromatic-takumar 85mm f/4.5 lens Japan 2471925 rare | eBay
IIRC Asahiflex once did a thread on that lens - with photos of his copy . . .

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
k-mount, nocta, pentax, pentax lens, pentax nocta, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax Nocta brochure Paul Ewins Pentax Film SLR Discussion 9 09-19-2017 02:34 PM
Nocta K David Pentax Price Watch 6 07-09-2017 04:56 PM
Metering Infrared with the Pentax MX kb244 Pentax Film SLR Discussion 15 04-12-2017 08:09 PM

All times are GMT -7. The time now is 09:56 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]