TIL Prizm Lens don't block any infrared

[KarlBlessing]

Btw f you mean uv leaking in because of scratches on prizm lens. I recall that the UV blocking is in the dye or polycarbonate itself, you could completely strip the coating wndbir would still block UV.

And yes I linked a filter (uviroptics seller on ebay), but then a whole camera kit.

 

[Dbninc]

Btw f you mean uv leaking in because of scratches on prizm lens. I recall that the UV blocking is in the dye or polycarbonate itself, you could completely strip the coating wndbir would still block UV.

And yes I linked a filter (uviroptics seller on ebay), but then a whole camera kit.

The second link didn’t post.

I did not know that about prizm lenses, thanks. I was talking about lenses in general, but good to know Prizm lenses are safe regardless! I have some Pit Boss Black Iridium Polarized lenses in particular I was curious about.

 

[KarlBlessing]

The second link didn’t post.

I did not know that about prizm lenses, thanks. I was talking about lenses in general, but good to know Prizm lenses are safe regardless! I have some Pit Boss Black Iridium Polarized lenses in particular I was curious about.

Kolari Pocket Full-Spectrum Converted Point & Shoot Camera with Infrared Filters | eBay

Find many great new & used options and get the best deals for Kolari Pocket Full-Spectrum Converted Point & Shoot Camera with Infrared Filters at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Here it is.

 

[Dbninc]

Kolari Pocket Full-Spectrum Converted Point & Shoot Camera with Infrared Filters | eBay

Find many great new & used options and get the best deals for Kolari Pocket Full-Spectrum Converted Point & Shoot Camera with Infrared Filters at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Here it is.

Ahhh cool, the threads just screw onto the front, yea that’s much more convenient.

 

[KarlBlessing]

Ahhh cool, the threads just screw onto the front, yea that’s much more convenient.

Yep, but will still need to find a uv bandpass filter 37mm to fit that, since the filters they include is for IR and visible light. Without any filter at all you see everything from uv to ir. Which could still be useful if you got just a blacklight to test with.

 

[KarlBlessing]

With the Trail Lens shot at 850nm.

 

[KarlBlessing]

With the Trail Lens shot at 850nm.

View attachment 860964

The visual light of what I wearing above.

 

[KarlBlessing]

Ahhh cool, the threads just screw onto the front, yea that’s much more convenient.

I now have a full spectrum camera.

I've had this Pentax Q10 for a while as a nice little pocket interchangeable lens camera that can also shoot raw files like my bigger cameras. Just 12 megapixels is kind of dated now days (the cam is from 2010), but still does very decent quality for the small 1/2.3" sensor.

Basically the 'baby' digital version of my 1980s Pentax MX (which was considered one of the smallest SLR they made with a bright viewfinder).

I got it really cheap as they were originally rather expensive and people weren't going to pay $800 for a small 1/2.3" sensor. As a result the lens came cheap now. It's now at the point where I couldn't even sell the whole kit for more than 150, so I wondered... can it be full spectrum.

Apparently it can, and rather easily too... you simply cut the IR Cut glass from the matte box it's suspended in. So that's what I did. Basically lose automatic dust removal, and the ability to shoot 'normal' pictures unless you put a hot-mirror filter in front of the lens.

So now it can see full spectrum. I don't own a UV-only-passing filter, but I have a Schott BG3 Dual Bandpass filter which allows UV and IR light in, but blocks out visible light. I never bothered using it because none of my cameras could see UV, and I already had much better filters for strictly passing the IR side. But it was on sale so I got it long time ago anyways just in case I did get something that could use it.

It'll show between about 225nm to about 450nm above 0.25+ light transmission, basically all of UV-A and UV-B, and a fair bit of UV-C. Also shows Infrared from about 720nm beyond.

Today is bright and sunny, so I went outside. With a UV/IR dual bandpass filter you see the blues of UV, but also Infrared light, giving you sort of that "Goldie" look straight out of the camera.

Then when I put the Prizm Shallow Water lens in front, it blocks out the UV (all the blue above).

So test wise to damaged lens, it would be mostly sufficient, especially if I use a blacklight (no IR transmission at all).

For me to strictly only see UV A/B/C thru the camera without any purple/blue visible light (that little bit of range between 400nm and 450nm), I would need to buy this guy Hoya U-340 52mm x 2mm thick UV Pass Ultraviolet Dual Band IR Filter | eBay so that it only covers the UV passing range.

 

[TheDukeOfIce]

Awesome, love seeing this detail and photos to show the differences, very cool.

 

[KarlBlessing]

Stopped by the vault today and can confirm they "all oakley lens" (guessing they mean in current production) blocks UV A/B/C in the polycarbonate base, the coating is only affecting the aesthetics of the front with some reduction in light transmission reduction (as well as the polarizing effect on the polarized filter), but isn't used for uv blocking since the whole lens already does that.