joecichjr Loc: Chicago S. Suburbs, Illinois, USA

Cold as could be, Lake Katherine Nature Center

sueyeisert Loc: New Jersey

I like them. What’s the nm?720?

mvetrano2 Loc: Commack, NY

Nice

kpmac Loc: Ragley, La

Nicely done, Joe.

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

Exactly! I wish I had know then what I know now when I was getting the camera converted. I would have done a full spectrum and not be so limited now....

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

How about you, Mike? Did you get a conversion done yet? Remember, read about full-spectrum!

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

I appreciate that, KP

topcat Loc: Alameda, CA

Nice work.

JimH123 Loc: Morgan Hill, CA

What filter did you have installed? For instance, if you chose 590nm, you can add any filter with a longer wave length, and will act as a camera that new longer wave length. Example, if you have a 590nm conversion, you can add a 636nm, or a 720nm, or even an 850nm.

But it doesn't work the other way. If you have a 720nm, you can't add a 590nm.

fcatmandu Loc: LEHIGH ACRES, FLORIDA

I had a conversion done some years back but don't remember which nm i had done. Is there a way to tell in the camera or do I need to go back to the company that did the conversion?

JimH123 Loc: Morgan Hill, CA

There certainly is. Check out this youtube video by Rob Shea. He provides a file to download in which you can take a picture of your monitor and to figure out where your camera fits in. One thing he didn't say. I think you should pick a sunny white balance to do this test. If you do a custom white balance, the results may shift that he is showing.

https://blog.robsheaphotography.com/2023/08/05/which-infrared-filter.html

There is also another way that I can make a determination that can be used by someone that uses multiple filters. I have a full spectrum and can use any filter I want to use. But I find that if I just take a picture with a known white balance such as Sunny, and just look at the image before I do any channel swapping, the different filters produce a overall color cast that is different for the different filters, but is constant for a given filter. That way, if I have forgotten what filter I used, I just look at the unprocessed image and can immediately tell what filter I used. You would need to shoot several images with different filters to produce some sample images to have something to compare to.

Note: I shoot RAW and do not do custom white balances in JPEG which could drastically affect these color casts. And also, with RAW, I find no advantage to custom white balance on green grass for instance. RAW allows me to shift colors as far as I want. I did some experiments where I compared end results using sunny WB, then custom WB using green grass, and then used cloudy, tungsten and florescent WB's. Then processed the results, in each case, I got the same end result, and the work involved was no more difficult.

But if you shoot JPEG, this won't work.

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

Thanks so much. My IR camera is used nowhere near enough

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

720, before I knew what you just told me

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

I couldn't tell you.
I am mad at myself that I did the 720nm, because it is almost totally limiting.
Can screw on any other nanometer filters unless they're above 720.

joecichjr Loc: Chicago S. Suburbs, Illinois, USA

Thanks for the great information. Rob Shea seems to really know his stuff