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UV camera project build question

Started Sep 24, 2018 | Discussions thread
petrochemist Veteran Member • Posts: 3,619
Re: Lots of issues...

ProfHankD wrote:

Blinkie wrote:

Wow thank you everyone for your advice. There is a lot I need to understand. The reason I thought about this project was seeing a converted camera for sale on ebay. It wasn't a lot of money and the seller explains that converting the cameras was a hobby of theirs. I thought it might be fun to try myself. The seller doesn't explain the sort of filter he incorporates into the cameras. Apart from giving the nm figure. Have a look for yourselves at an old listing.

https://www.ebay.co.uk/itm/Canon-PowerShot-A480-Infrared-Converted-IR-670nm-Digital-Camera-Custom-Firmware-/352465874416?nordt=true&orig_cvip=true&rt=nc&_trksid=p2047675.m43663.l10137

The seller doesn't have anything currently for sale but but every now and then will list a similar item.

B

Well, I don't know what a "670nm filter" means, but most of us think of NIR as starting around 750nm+ wavelength. The fun stuff happens mostly between 850nm and 1200nm, with most camera sensors falling off by 1100-1200nm. Then again, the price quoted was really cheap (ok, the base A480 is worth about $10) and it's really no fun to do that to a little PowerShot (I've taken 'em apart myself before).

Most websites on IR photography will include quite a selection of 'High color' 'super color' etc conversions. The capture NIR along with some visible, the Bayer filter shows much more variation for the visible portion, so interesting colour effects can be introduced using the small portion of the visible that's captured. See https://www.lifepixel.com/ for example.

My current favorite filter is a 590nm. It still looks pretty much like a 720nm image if totally desaturated, but also opens up false color options. A selection of my IR & IR+ shots can be found athttps://www.flickr.com/gp/petrochemist/g7BR91 most of the latest are with a 590nm, the 670 should be similar but give a little less color.

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