How about some infrared images

[mat4226]

Very nice, Matt! How do you focus for IR?

I am not Matt, but I do use Efke IR film regularly. I actually do not compensate because EFKE IR does not go as deep into IR than the late and lamented Kodak HIE film (roughly 800 versus 950nm if I correctly recall). And I stop down to f22 or so. I try to stop down less than I would do in the same situation when using a normal B@W film, as I understood that diffraction is also wavelength depended. And diffraction gets worse at longer wavelengths (beyond red, that's longer right?)

I'm with Cor, Jay, I don't compensate unless the subject is much closer to the camera, where depth of field is a little trickier in the first place.

That's an interesting point about diffraction, I'll have to keep that in mind with future IR work. Though the image in question was made at f/64. ^__^

[polyglot]

Those are fantastic, Roman.

[Maris Rusis]

Flooded Forest, number 1

Gelatin-silver photograph, image size 24.4cm X 19.6cm, from a Efke IR820 8x10 negative exposed on Freestyle Private Reserve VC FB photographic paper in a divided back contact frame. Camera was a 8x10 Tachihara 810HD triple extension field view camera fitted with a Nikkor-W 210mm f5.6 lens and an IR680 filter.

[Michael Wynd]

Superb Maris. Ilove it. So much detail to look at.

[Jay DeFehr]

Hi Jay,

I am not Matt, but I do use Efke IR film regularly. I actually do not compensate because EFKE IR does not go as deep into IR than the late and lamented Kodak HIE film (roughly 800 versus 950nm if I correctly recall). And I stop down to f22 or so. I try to stop down less than I would do in the same situation when using a normal B@W film, as I understood that diffraction is also wavelength depended. And diffraction gets worse at longer wavelengths (beyond red, that's longer right?)

Best,

Cor

Thanks, Cor -- makes sense. I'll give it a try, some day.

[Gary Beasley]

Gelatin-silver photograph, image size 24.4cm X 19.6cm, from a Efke IR820 8x10 negative exposed on Freestyle Private Reserve VC FB photographic paper in a divided back contact frame. Camera was a 8x10 Tachihara 810HD triple extension field view camera fitted with a Nikkor-W 210mm f5.6 lens and an IR680 filter.

I love how IR looks with water reflections in it, seems to have more depth than regular film. This is a super shot!

[jb7]

Flooded Forest, number 1

Gelatin-silver photograph, image size 24.4cm X 19.6cm, from a Efke IR820 8x10 negative exposed on Freestyle Private Reserve VC FB photographic paper in a divided back contact frame. Camera was a 8x10 Tachihara 810HD triple extension field view camera fitted with a Nikkor-W 210mm f5.6 lens and an IR680 filter.

Remarkable Maris....

[Maris Rusis]

Thanks for your kind words Michael Wynd, Gary Beasley, and jb7.

A flooded forest is a fortuitous bit of subject matter that just happens to exploit the peculiar properties of Efke IR820 infrared film. The water is rendered black in infrared but because it is absolutely still it becomes a perfect mirror of "black glass". A reflection doubles the amount of luminous detail because it replaces an otherwise schmutzy foreground; an old trick that works every time!

Film exposure was 15 minutes at f16 at an effective film EI = 0.15. That's slow. What wasn't slow was me. I'm jumping about slapping mosquitos while not bumping the camera. Suffering for art takes many forms.

[evan clarke]

I was laying down at the time??

[Cor]

Great image, Maris!

I love the subdued IR effect, it's very subtle! I was wondering about the water, why it is not pitch deep black, now I understand, great trick, which regretfully won't work over here (The Netherlands) almost always windy..

I am a bit surprised about your speed: when I shoot 4*5 IR Efke I get a 1-2 Asa with a 70 red filter, you shoot even 2 stops slower! Was this the stuff you got relatively cheaply on ***bay ?

Best,

Cor

Thanks for your kind words Michael Wynd, Gary Beasley, and jb7.

A flooded forest is a fortuitous bit of subject matter that just happens to exploit the peculiar properties of Efke IR820 infrared film. The water is rendered black in infrared but because it is absolutely still it becomes a perfect mirror of "black glass". A reflection doubles the amount of luminous detail because it replaces an otherwise schmutzy foreground; an old trick that works every time!

Film exposure was 15 minutes at f16 at an effective film EI = 0.15. That's slow. What wasn't slow was me. I'm jumping about slapping mosquitos while not bumping the camera. Suffering for art takes many forms.