Stefano Posted July 21, 2023 Share Posted July 21, 2023 Today I took a few UV/IR photos of some people in my university, including the arm of one girl who is covered in freckles (or similar). Also I used a Helios lens I have, it passes UV to about 340-350 nm and so it should behave similarly to a Canon 40 mm f/2.8 pancake. I had a PTFE square, but I didn't use it for these photos. Photos rendered in black and white. Full-spectrum Canon EOS M, Helios-44M-5 (stopped down, maybe at f/8). - UV: ZWB2 (2 mm) + Chinese BG39 (2 mm); - VIS: Chinese BG39 (2 mm). There should be a negligible amount of UV contamination; - IR: Hoya R72. UV (ISO 800, 1/2 s): VIS (ISO 100, 1/500 s): IR (ISO 100 1/500 s): Tricolour/composite (blue: UV; green: VIS; red: IR): Link to comment
Fandyus Posted July 21, 2023 Share Posted July 21, 2023 How did you manage to switch the filters quick enough I don't know. I always wondered what people would look like in various non-one-shot representations but I was convinced it would need to be someone who is deeply sedated or worse.. Not that that would be very good. Link to comment
Stefano Posted July 21, 2023 Author Share Posted July 21, 2023 I just told her to stay still. I would say it took 1-2 minutes to take all the shots. Link to comment
colinbm Posted July 22, 2023 Share Posted July 22, 2023 Excellent presentation Stefano Link to comment
Fandyus Posted July 22, 2023 Share Posted July 22, 2023 15 hours ago, Stefano said: I just told her to stay still. I would say it took 1-2 minutes to take all the shots. Jesus, she must have been a living statue. Link to comment
Stefano Posted July 22, 2023 Author Share Posted July 22, 2023 It wasn't very difficult (she was sitting and her hand was resting on a surface). Also, I had to align the images for the composite stack. The TriColour photos Bernard Foot took of his wife are a real feat. I think they aren't visible now (they were in a gallery). Link to comment
Fandyus Posted July 22, 2023 Share Posted July 22, 2023 4 hours ago, Stefano said: It wasn't very difficult (she was sitting and her hand was resting on a surface). Also, I had to align the images for the composite stack. The TriColour photos Bernard Foot took of his wife are a real feat. I think they aren't visible now (they were in a gallery). Oh yeah, it's such a shame the post was hidden. I am not sure why it happened. Link to comment
Stefano Posted July 22, 2023 Author Share Posted July 22, 2023 Read this: Also, this specific post appears to be post #50,000. Bernard did an awesome work a few years ago. According to Andrea's post above, his topic should be stored somewhere. He made his wife stay still for a UV TriColour, visible light and IR TriColour photos, so I think 7 different photos requiring filter changes and refocusing. Link to comment
Stefano Posted July 27, 2023 Author Share Posted July 27, 2023 On 7/22/2023 at 9:33 PM, Fandyus said: Oh yeah, it's such a shame the post was hidden. I am not sure why it happened. Here it is: Andrea has restored gallery topics. Now they are back online. Link to comment
Fandyus Posted July 28, 2023 Share Posted July 28, 2023 13 hours ago, Stefano said: Here it is: Andrea has restored gallery topics. Now they are back online. Thanks, I've already seen. I downloaded the page to my computer in case it ever gets privated again. I want to be able to look at those fascinating pictures. Link to comment
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