IR-converted K20D for sale
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John Riley reviews the Pentax 135mm f/2.5 telephoto K Series lens with a bonus comparison with the Takumar (Bayonet) 135mm f/2.5 - John provides sample photos, MTF & CA charts along with his verdict on both lenses.
Photograph titled 'A profitable day?' by Antony selected as Pentax User's Photo of the Week.
574 posts
16 years
Hampshire,
UK
This body has an 830nm IR-passing filter installed in front of the sensor in place of the normal IR-blocking filter. This means that the images produced by the sensor are black and white right out of the camera, using a manual white balance setting taken from sunlit grass. No filter is required on the lens, and daytime exposures are typically 1/90th at f/6.7 ISO 200 with the Sigma, a stop or so faster with the kit lens.
First some pictures of the body:
These are examples of images taken on this body:
You can see other examples of IR images on my 500px page or my own website linked below.
Shutter count is high, at just under 64k. The body comes with the original box, manual, strap, eyepiece cover, the rubber cover for the grip connector and charger. Due to a mix-up with batteries the OEM battery in it is actually the one from a Samsung GX20, i.e. from the Samsung-branded version. I can add a spare non-OEM battery.
The body is currently in debug mode so that a purchaser can easily adjust the AF in IR. Full instructions will be provided.
The kit 18-55 works well and the AF on this body is set to work properly with that lens. The Sigma 10-20 also works well and gives infinity focus at the infinity mark. Other lenses will vary, please ask.
I believe that ACS charge well over £300 to convert a Pentax so I'm asking £450 for this body.
This is the best time of year to do IR photography, so don't delay!
Also on 500px