Oliver Krohn Posted February 12, 2018 Share Posted February 12, 2018 Hello, I am from Duesseldorf area, Germany. My interest in UV photography is both, professional and private. I work as a BTA in an institute (biology, sensory ecology) at the university of Duesseldorf and since we have a focus on pollination, we use UV photography for quite a long time, as well as spectroscopy (reflectance) and thermography. Before, I worked in ecophysiology (tuna breeding) as well as in cell culture / molecular biology (hairy root cultures of Linum spec.) and molecular biotechnology (pharmaceutical antibodies cloned into plants, Fraunhofer Institute / RWTH Aachen). Since I have several interests, I spend a lot of my spare-time with very different projects, from manipulating Jura coffeemakers with microcontrollers to growing oyster mushrooms and making fruit wine and more. I was thinking about modifying my own camera (GH3) for years, but never did it so far. Yesterday, finally, I ordered a helicoid and some adapters as well as an enlarger lens (Rodenstock Trinar 75/4,5, simply because it was available for a few bucks only). What I need next, are various filters (UV bandpass, UV/IR cut, IR bandpass etc.) and a good 365 nm flashlight, equipped with filter (ZWB1?). I am still studying flashlights, since it's not easy to find a good and cheap one with an wide even spot without spill. But I am sure there is a hint / recommendation somewhere in this forum. Found out, that there are programmable microcontrollers on the driver boards of flashlights, since I wanted to repair an old (but good) one and would have needed to get rid of the modes of the available cheap China driver boards. In the end I decided to simply buy a new one. Anyway, the thrilling part will be the modification of the camera. I found the technical manual and a tutorial for the conversion of a G3, which should help. I am not yet sure, if I should buy a second body for modification or not. The image shows a flower of Ceropegia sandersonii in UVIVF. I used a GH2 equipped with Baader UV-/IR-cut filter and a 365 nm flashlight with Baader-U.. Regards, Oliver Admin's note 27 March, 2018: Oliver asked for the first image to be removed (publishing rights) Link to comment
Andy Perrin Posted February 12, 2018 Share Posted February 12, 2018 Welcome! Gorgeous images, and I think we overlap in our interests quite a bit. I'm also into thermography, and I like to tinker. UV bandpassIf you don't get a dedicated UV filter (e.g. Baader), don't forget you need to block the IR leaks from most filter glasses! Link to comment
Oliver Krohn Posted February 13, 2018 Author Share Posted February 13, 2018 Welcome! Gorgeous images, and I think we overlap in our interests quite a bit. I'm also into thermography, and I like to tinker.Nice! Microcontrollers offer so many possibilities. I once thought about a filter wheel for a Rasperry Pi NoIR camera, but didn't get cheap, suitable filters at that time and lost focus later. Additionally, the Pi NoIR cam has only little UV sensitivity. But I thought it would be nice to mount it on two servos as a nodal point adaptor and make photospheres even inside of (very large) flowers. :D However, what I can say, is that the Logitech C230 webcam has a much better UV sensitivity than the Pi NoIR cam, but only older models allow removal of the cut filter. I would be interested in cheap webcams suitable for UV, although the image quality is poor, compared to a image from a DSLR or system camera. If you don't get a dedicated UV filter (e.g. Baader), don't forget you need to block the IR leaks from most filter glasses!Yes, I am aware of that problem. Indoors it should not be a problem with UV 365 nm only. Maybe I can get another lens for outdoor use over time. Of course, I have to use a Baader-U or comparable Hoya-Filter or stack different filters, when shooting outdoors on a sunny day. Link to comment
Andrea B. Posted February 15, 2018 Share Posted February 15, 2018 Hello Oliver and welcome to UVP! I hope you enjoy the website. We have lots of posts about UV torches -- use the UV Lighting tag to find them.UV Lighting Link to comment
nfoto Posted February 15, 2018 Share Posted February 15, 2018 Warmly welcome to UVP. I understand you'll fit straight into our diversified community. Link to comment
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