Infrared, anybody? (Page 15): At 720nm and above. For 590, a white or gray card is the way to go.

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JohnSwanda wrote:

You might also try WB off sunlit green grass. That is the classic technique for digital IR color.

At 720nm and above. For 590, a white or gray card is the way to go.

JohnSwanda Loc: San Francisco

depscribe wrote:

At 720nm and above. For 590, a white or gray card is the way to go.

I use grass with a 665 and have always like the result. What kind of number do you get with white or grey? I get 2000 with ACR, which I think is the lowest it will go.

wingclui44 Loc: CT USA

JohnSwanda wrote:

You might also try WB off sunlit green grass. That is the classic technique for digital IR color.

Yes, I always use green glass in the Sunlight, now I may try using grey whatever it is for the WB. Hay! it's fun to try something else! Thank you!

wingclui44 Loc: CT USA

JohnSwanda wrote:

It's funny to call a 25A "fake IR". That was the filter most commonly used for IR film.

Please don't laugh at me, I don't know that filter was using for IR film, I hadn't do any IR during all those time of my shooting with film!

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JohnSwanda wrote:

I use grass with a 665 and have always like the result. What kind of number do you get with white or grey? I get 2000 with ACR, which I think is the lowest it will go.

I uses calculators for numbers; my camera use is limited to the making of photographs. What I get with gray is illustrated above.

JohnSwanda Loc: San Francisco

depscribe wrote:

I uses calculators for numbers; my camera use is limited to the making of photographs. What I get with gray is illustrated above.

I just thought that if you were also getting the lowest WB the RAW software is capable of, it might not matter whether you used grey or green.

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JohnSwanda wrote:

I just thought that if you were also getting the lowest WB the RAW software is capable of, it might not matter whether you used grey or green.

I set the white balance in-camera and use auto white balance in the GIMP, whether I'm shooting RAW or using jpegs.

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Here's the fog beginning to rise on the far hillside (looks like cottage cheese, but it's trees) after a thunderstorm.

Fuji X-E2 converted to 590nm, 35mm f1.4 Fujinon

wingclui44 Loc: CT USA

depscribe wrote:

Here's the fog beginning to rise on the far hillside (looks like cottage cheese, but it's trees) after a thunderstorm.

I like the 'cheese' look!!

Now I am using the 25A mostly, I like the color it produced, like this one. (Enhanced a little bit).

(Download)

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Lovely picture. I especially like the water. Water in infrared is a little unpredictable, isn't it. You're certainly exercising the potential of that 25A! And as with my little picture above, you're finding the layers of vegetation and how IR manifests in the differing amounts of light.

wingclui44 Loc: CT USA

Yes, I do! It's on my camera all the time now. It's good to know this 25A actually was used as a IR filter in the B&W film era that some one in the post pointed out to me, thank him so much!

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wingclui44 wrote:

Yes, I do! It's on my camera all the time now. It's good to know this 25A actually was used as a IR filter in the B&W film era that some one in the post pointed out to me, thank him so much!

In the IR film era there was a lot of experimentation -- we also used yellow filters and orange filters in addition to red, in both black-and-white and color IR film. Kodak didn't provide the information we would expect with film; instead, in every box there was a little folded sheet offering suggestions, starting points, and so on. It was an exciting time, though more deliberate and time-consuming than shooting is now. Then again, the delights of getting one hoped then were so much greater than today's instant gratification.

wingclui44 Loc: CT USA

depscribe wrote:

In the IR film era there was a lot of experimentat... (show quote)

I still have the 80B (blue); G(XO) green; SY 48.2 yellow, plus the red 28A.
I just did one experiment using the 25A, I set the custom WB in the camera to take an image, then PP in the computer, but I only did it with R & BL channel swap with out using the auto WB, it came out quite different like this:

(Download)

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wingclui44 wrote:

I still have the 80B (blue); G(XO) green; SY 48.2 yellow, plus the red 28A.
I just did one experiment using the 25A, I set the custom WB in the camera to take an image, then PP in the computer, but I only did it with R & BL channel swap with out using the auto WB, it came out quite different like this:

Mastering the post-process is critical to our having any control, though I suspect that many of us are just enjoying the surprises we're finding. Here's a picture I made a few minutes ago on the way to the mailbox. It's 590nm and was made with a 14mm Fujinon on a converted X-E2, 1/125 f5.6 ISO 200.

wingclui44 Loc: CT USA

depscribe wrote:

Mastering the post-process is critical to our having any control, though I suspect that many of us are just enjoying the surprises we're finding. Here's a picture I made a few minutes ago on the way to the mailbox. It's 590nm and was made with a 14mm Fujinon on a converted X-E2, 1/125 f5.6 ISO 200.

Yes, we just keep trying something new and enjoy it! Happy shooting!