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11-26-2015, 06:35 PM   #1
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IR version of 645Z released [in Japan]

Interesting adaption of the 645Z. Seems to be only available in Japan. And note the conditions of use at the bottom of the media release - this camera is not for personal use[?].

Infrared region medium-format digital SLR camera for photographing "PENTAX 645Z IR" New release



Google translated text:

Infrared region medium-format digital SLR camera for photography is possible business

New release "PENTAX 645Z IR"
- And specialized agencies for models - that can be taken to "object invisible to the visible light"

Ricoh Imaging Corporation (President: Akabane Noboru), the development of a medium format digital SLR camera that the infrared (IR) region that is not visible to the human eye can be taken "PENTAX 645Z IR", Ricoh Corporation (President and Chief Executive Officer : will be released in the sales order sales method from Sato Kunihiko).

This product, from professional photographers based on the proven "PENTAX 645Z" in overwhelming high image quality and high reliability, valuable cultural assets and sketch and drafts of the investigation such as mural-painting, to the excavated wood strip interpretation of ink character that has been written, we have developed as a model corresponding to the shooting of the infrared region which can perform investigation shooting, such as forensics. As not to give the physical impact "appraisal for the imaging apparatus of non-destructive" to the object, academic research and expert opinion in the specialized agencies, available for forensic applications. A camera body of the infrared (IR) specification remove the cut filter, and by attaching the visible-light cut filter on the photographing lens front surface, it has to enable photography of the infrared wavelength range invisible to the human eye.
In addition, the focus position is different from the infrared light of the focus position facilitates the shooting in live view function and low angle that you can shoot while checking with the naked eye tilt type liquid crystal monitor, such as dust and water structure adopted by the visible light, easy shooting even in harsh conditions, and this can be done with confidence.

It should be noted that, "PENTAX 645Z IR" because of the library and museums, research institutions, government agencies specialized agencies for models such as, you will be entered into the "PENTAX 645Z IR use Agreement" which defines the conditions of use upon purchase. In addition, not sold to the general customers for the purpose of personal use.

Product page:

11-26-2015, 07:45 PM   #2
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Nice for the 645Z people.
I wonder if the new FF will also have this feature?
11-26-2015, 08:06 PM   #3
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QuoteOriginally posted by beachgardener Quote
I wonder if the new FF will also have this feature?
It's not really a feature, it's a separate model (which will only do IR photography, for forensic and research purposes). Great for those who need it. The reason they require the signed agreement that it will only be used for research purposes is that IR cameras can be used for illicit purposes as well (they see through certain fabrics, among other things). In the long run, cameras like this will be supplanted by hyperspectral imaging, but this will be an incredible tool for those who need it, such as art museums doing restoration work.
11-26-2015, 08:09 PM   #4
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ahh, yes sorry I must have misunderstood something

11-26-2015, 09:44 PM - 1 Like   #5
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IR cameras and thermographic cameras do not see through normal clothes. Photographers have been using IR for years. Several companies modify DSLRs into full spectrum by replacing the IR filter.
11-26-2015, 11:21 PM   #6
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Through fabric ? Mmmmmm
11-26-2015, 11:29 PM   #7
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this just a near infra red - as in just removed the ir filter or is this a full blown thermal camera?
11-26-2015, 11:34 PM   #8
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QuoteOriginally posted by stormcloud Quote
is this a full blown thermal camera?
No, it's not a FLIR.

The product page says [via Google translate]:

"General digital camera is equipped with a IR cut filter in front of the image sensor, it has been designed to receive only visible light region. PENTAX 645Z IR contrast, by replacing the IR cut filter glass that transmits infrared radiation, is a camera specially designed to spread the sensitivity to the infrared region. Also By mounting the visible light cut filter in front of the lens, it can be special shooting using only infrared region. Infrared, for example painting of paint and pigment murals, etc., is transmitted through the dirt of material surface, it captures the image, such as a sketch in the lower layer. Particularly suitable for the observation of the ink and the carbon component, and such as to highlight to clear a character from the hard wood strip is read by sooty, it is effective for the analysis of various materials. It should be noted that this PENTAX 645Z IR you have a broadband infrared sensitivity characteristic that covers from the visible region to about 1100nm."

11-27-2015, 02:57 AM   #9
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It will be interesting to compare the spectra of 645Z IR and D810A.

All I could find is:
  • D810A: 4x sensitivity at 656 nm (good for astronomy, H-alpha line)
  • 645Z IR: cut at 1100 nm (good for forensics)
The D810A has astonishingly little restrictions for general purpose photography as a modified camera calibration profile takes care of most effects. It is sold to the general market too. The 645Z IR seems to have an even wider spectrum making it more of a spcial purpose camera. But I've not seen data to back up this assumption.
11-27-2015, 03:14 AM   #10
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QuoteOriginally posted by falconeye Quote
The 645Z IR seems to have an even wider spectrum making it more of a spcial purpose camera. But I've not seen data to back up this assumption.
From the product page, there is this image showing the very broad spectral sensitivity of the 645Z IR:


My first thought on seeing this was how this must improve the colour sensitivity of the camera. 645Z - now with more colour depth, and even better for portraiture?
11-27-2015, 06:44 AM   #11
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QuoteOriginally posted by stormcloud Quote
this just a near infra red - as in just removed the ir filter or is this a full blown thermal camera?
Far infra-red doesn't pass through glass, so this camera would need lenses made of germanium in order to be able to take photos.

---------- Post added 27th Nov 2015 at 10:17 ----------

QuoteOriginally posted by bar_foo Quote
It's not really a feature, it's a separate model (which will only do IR photography, for forensic and research purposes). Great for those who need it. The reason they require the signed agreement that it will only be used for research purposes is that IR cameras can be used for illicit purposes as well (they see through certain fabrics, among other things). In the long run, cameras like this will be supplanted by hyperspectral imaging, but this will be an incredible tool for those who need it, such as art museums doing restoration work.

The most advanced forward-looking infra-red devices (sensing far infra-red) are prohibited from export by the U.S. because the technology is still classified as restricted to military uses (lower-resolution devices are not prohibited). Perhaps Japan has laws restricting the sale of both near and far infra-red devices.
11-27-2015, 08:44 AM   #12
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Well, Ricoh releases a new camera...
Not quite what we want
11-27-2015, 11:47 AM   #13
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QuoteOriginally posted by pete-tarmigan Quote
Far infra-red doesn't pass through glass, so this camera would need lenses made of germanium in order to be able to take photos.

---------- Post added 27th Nov 2015 at 10:17 ----------




The most advanced forward-looking infra-red devices (sensing far infra-red) are prohibited from export by the U.S. because the technology is still classified as restricted to military uses (lower-resolution devices are not prohibited). Perhaps Japan has laws restricting the sale of both near and far infra-red devices.
Well, you can get the Phase One monochrome back wordwide even without IR glass. So what is all the fuss about.
We are looking at a monochrome sensor without IR glass. Silicon sensors can gather light up to 1100nm. This camera is not that special. Put an IR cutoff filter on the lens and you have a nice monochrome camera. Somethng you can sell not only to a special group of customers.
11-27-2015, 01:20 PM   #14
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QuoteOriginally posted by zapp Quote
Well, you can get the Phase One monochrome back wordwide even without IR glass. So what is all the fuss about.
We are looking at a monochrome sensor without IR glass. Silicon sensors can gather light up to 1100nm. This camera is not that special. Put an IR cutoff filter on the lens and you have a nice monochrome camera. Somethng you can sell not only to a special group of customers.
This camera (from 350 till 1100 nm) could be called as some kind of monochrome too. You are right - it could be used for art photos, not only for technical tasks.
The camera has broadband infra-red sensitivity characteristics that covers from the visible region to 1100nm.

Last edited by ogl; 11-27-2015 at 01:30 PM.
11-27-2015, 02:02 PM - 1 Like   #15
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QuoteOriginally posted by zapp Quote
We are looking at a monochrome sensor without IR glass.
I don't think it is just a monochrome sensor. As I understand it, it's still the standard 645Z full-colour sensor inside. What they have done is removed the IR filter from above the standard 645Z sensor. Hence, you now have the option to use a visible light filter on your lens to just shoot IR, or use an IR filter to just shoot visible light. Only when you use a visible light filter will the camera shoot monochrome.

QuoteOriginally posted by bertwert Quote
Well, Ricoh releases a new camera...
Not quite what we want
True. An early Pentax FF for the Xmas stocking would have been nicer for many. But it's always good to see new product emerging from Ricoh.
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