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Sometimes symmetrical images might be interesting, even if it normally is considered wrong to compose a picture that way. I always have been drawn to pictures of roads vanishing forward, especially if there are rows of trees on both sides. Tunnels sometimes have the same affect. Here are two examples from when I was testing my old Canon FD 20/2.8 SSC for hotspots. That lens and the Canon FD 17/4.0 SSC seamed OK, for hotspots, at least at f/8.0 and less. The filters I used are a the Zomei 850nm and the B+W 040 (ca 550nm) The 850nm image is a result from fusing several (5) exposure bracketed images in Hugin The 040 filter is the same as I used for the Goldie of the old castle, but this time without Goldie processing, just WB and Highlight/Shadow enhancement of one image in Photoshop. I liked the spooky surreal colours of the bright parts that I got. The tunnel and wooden bridge are from the same castle Månstorps Gavlar as last time

I finally got around to shoot some images again and opted for the longer wavelength end. This is the remains of an old castle built around 1520. https://wadbring-com.translate.goog/historia/undersidor/manstorp.htm?_x_tr_sl=sv&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp The images are panoramas processed in Hugin with the Stereographic projection. They are composed of each 5 original photos taken with my Sony A7III and a Canon EF 24-105 L at 24/7.0, ISO 100 I used 77mm filters that vignetted on the lens at 24mm, a Zomei 850nm and a B+W 040 (ca 550nm) A proper Goldie image is normally taken with a 590nm filter, but the 550nm 040 worked acceptably

Hi, never researched this area, so maybe there are people who already know... - How good UV-Nikkor is for IR at the edge of silicon sensor sensitivity? I already know that there is focus shift above 900nm, but anything else than this? - What filter can I use to maximally filter out anything below 1 um? - Is UV-Nikkor good for this? I'm speaking about Fuji 50R Full Spectrum + Monochrome + Quartz converted (mono & quartz is not imprtant for IR above 1 micron right?)

Today I was in the botanical garden of the University of Düsseldorf in Germany. It was a sunny autumn day with a clear blue sky and pleasantly warm sunlight. I took the photos with my Canon 6D-FS and the 1:4 16-35mm L IS USM. All images are post processed. NIR: Rodenstock green filter #13. UV (approx. 390-400 nm): ZWB2 and two QB21

Hi everyone. Testing my Hoya Vario PL filter on my Panasonic Gf3. Hope you enjoy it

Went out this weekend to the arboretum, wanted to get some pics of the Sunflowers before they're gone. Also the wildfire smoke has gone and pleasant to be outdoors again. Gear I used for NIR was the Canon EOS M, Canon EF 50mm f/1.8 STM Lens with an astro 850nm planted inside the EOS adapter. For UV was Canon T7(1500D), EL Nikkor 80mm Enlarger metal version with the Antilia U in camera body with the UVR Optics NIR Block on the lens with Hood tube. LWIR was with the Pulsar Helion XP 50 ISO800, 1/6th sec, F8 ISO100, 1/800th sec, F3.2 850+nm another shot but closer in to see the visitors ISO100, 1/400 sec F3.2 These last were with the Pulsar in different color modes, straight out of camera,640res jpgs. The lens is so fast, it's hard to get everything in focus. Time is off as I had the battery out, Pics were taken about 9:30am White Hot- Very hard to not over expose(failed) pretty hot center Rainbow Black hot Thanks for checking these out.

For some reason old cars taken with IR bring a special old time vipe to life Nikon D800 850nm Nikon 28-300mm f3.5-5.6 ED VR Tameron SP 150-600mm F5-6.3 Di VC USD G2

Hi some nature and street photos from Mauritius take with Nikon D800 850nm IR

Went to this nudes photography workshop with Renée Jacobs in France and my luggage was delayed for 5 days so i only had my Nikon D800 850nm Camera :-/ but that made it just that more interesting as trying to avoid show veins and arteries was a struggle

Since my UV-attempt at minimalism (https://www.ultravio...432-minimalism/ ) was received benevolently, and I did mention there that I had taken some minimalistic shots in IR some time ago, here are a few of them. The camera was Canon EOS 6D, converted to 700nm, but I don't remember the lens, probably a fast prime with a couple of extension tubes which didn't transmit the lens-data to the camera. All I can say is that they were taken at ISO 100, and between 1/640 and 1/2500 s. I took them at one of my favourite hunting-grounds, the local Botanical Gardens, and I have no idea which plants they are (I took them in June, but since it's mostly leaves and no blossoms, that won't help any). Processing is also pretty basic, cropping, desaturating, reducing clarity and black (not all of them in all photos), and adding some colour cast to lights and/or shadows.

In the summer of 1972 I saw an article in Petersen's Photographic magazine about infrared photography that got me interested (see last pic). I needed a 35MM camera to use the available film so I found a used Yashica 35GS for about $50. It was a rangefinder camera and so well-suited for photography with an opaque filter. I couldn't afford a glass IR filter so I bought a couple of Kodak gelatin filters for infrared which cost about $3 each. It was 50 years ago this month (Aug 1972) that I shot the first roll so I thought I would post a few photos from it. These were taken in the Midwestern US where I grew up. As you can see the images are vignetted because of my rather large filter stack/sandwich. I used the UV and Skylight 1A filters that came with the camera to make a sandwich to hold the cut gelatin #87 filter. It was roughly equivalent to an IR720 or IR760 modern filter. The film was Kodak High Speed Infrared which required total darkness to load and process. I processed this myself in D-76 developer because I couldn't trust the photo labs to handle it properly. Kodak High Speed Infrared Spectral Response (Taken from Kodak publication P-9, 1970) Combining the spectral sensitivity of the film with my #87 filter probably gives an approximate capture spectrum of 750-920nm. Fifty years later I still have that magazine and what's left of the Kodak Gelatin filters I cut up. Petersen's Photographic Jun 1972, High Speed Infrared Film specsheet & Kodak IR Gelatin filters. After this first roll of film I was completely sold on IR photography and kept with it off and on for the next 50 years. About 10 years ago I discovered how easy digital infrared photography was (compared to film) and got interested all over again. Next month is my 50th anniversary of shooting color infrared and I'll post a few of those then.

The Italian astronomy specialists, PrimaLuce Labs https://www.primalucelab.com/, recently advertised their full-spectrum modification of the new Nikon Z5 camera. UVP (Birna) has received a review sample and my findings will be reported in this thread. A mirrorless model in the Nikon Z line-up, the Z5 has a "full-frame" FX 24 MPix sensor, calibrated ISO range 100-51.200, and dual card slots for SD cards. It is powered by the ubiquitous EN-15-class batteries common to most Nikon mirrorless models. The Z5 comes with the EN-15C version, however the older types can be used too, but maximum number of frames might be reduced. There is an option of using real-time charging via USB-C to avoid any downtime from a battery swap, or one can use the A/C mains option available. Full specifications of the Z5 can be found at Nikon's web site: https://imaging.niko...mirrorless/z_5/ The PrimaLuce modification entails replacing the stock AA filter with their own "full-spectrum" version, plus recalibrating the camera to enable reliable AF with the native Z lenses. The graph (from the PrimaLuce web site) shown above indicates the modified camera should be ideal for IR photography nd by extension, also for various kinds of multispectral photography. The replacement internal filter rolls off more rapidly towards 300nm than the UV aficionado would prefer. Whether this is a serious drawback remains to be seen when conditions allow in-depth UV testing, using dedicated UV lenses such as hte Coastal Optics 60mm f/4 APO and the UV-Nikkor 105mm f/4.5. At present, winter is approaching and good subjects for UV evaluation are harder to find. First impressions are quite positive as I reveived a very clean camera with no sensor dirt (not always the case from better known conversion services). PrimaLuce throw in a 64GB SD-card for good measure so one can be up and shooting in a short while. They will give a 4-year camera warranty once the camera is registered on the Nital.it web site, however I could not complete this process as the site refused (?) non-Italian citizenship. I guess Nikon Nordic would honour a world-wide warranty though. The camera feels and handles just like an ordinary Z5/Z6/Z7, thus is easy to set up exactly as the end user wants. Accessories such as L-brackets, GPS devices, and remote controls from other Z models all function as expected.

Nikon D800 ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,RG850 f/8.0 iso200

The Hallstatt culture (https://en.wikipedia.org/wiki/Hallstatt_culture) was pretty dominant in parts of central Europe during the late Bronze Age and early Iron Age. In the Austrian village of Mitterkirchen there is an open-air museum with some 20 buildings, located at the site of a dwelling from that age - they found quite a few human remains inside a tumulus as well. Great care was taken to build in the original style, using materials and techniques as similar as possible (and as far as is known, Archeology relies a lot on educated guesses, after all ). They even reconstructed the interior of one of the tumuli. The village is not to far from the current bed of the Danube, in earlier times the river would have been running freely in plenty of arms, which probably accounts for the massive dugout-canoe. Neither the Wikipedia-site (https://de.wikipedia.org/wiki/Keltendorf_Mitterkirchen), nor the site of the village (http://www.keltendorf-mitterkirchen.at/keltendorf) sports an English version, but apart from the musum, they offer the usual type of events, like Build-Your-Own-Slingshot, or Pottery-The-Hallstatt-Way, etc., mainly for kids, I suppose. However, perhaps you'll find this to be of interest, 3D-model of the Keltendorf: http://www.keltendorf-mitterkirchen.at/Keltendorf/Ueber_uns/3D-Modelle_vom_Keltendorf , and the 2D-description: http://www.keltendorf-mitterkirchen.at/Keltendorf/Ueber_uns/Beschreibung_mit_Rundgang, perhaps you can auto-tranaslate this in your browser. It is really interesting to see that the people living in this part of the world around 1000 - 600 BC were not barbarians how we imagine barbarians - even though they were living on the left bank of the Danube, so to the Romans, they were barbarians. But, as we know now, the Danube-Limes was never a fully closed border, there was a lot of going to and fro, and plenty of trading. Today I went there with some friends, taking along the Canon EOS 6D, converted to 700nm, and the Canon 11-24, thinking the 11mm might come in handy. Especially indoors those 11mm truly work wonders, no big surprise that real-estate agents use them. Also, this time I did play around with hue and saturation a bit more than usual. I've taken around 150 shots, I guess, and after weeding out the failures and duplicates ended up with about 100. Of course, plenty of them still are very similar, so I selected but a few. #1: view from the chief's hut, towards the summer-house left, and the backing-hut, which is partly subterranean #2: view from the entrace to the burial mound towards the frame which protexts the dugout canoe #3: eatery for the visitors (basically this: https://dict.leo.org/englisch-deutsch/jausenstation ) #4: view from the weaving-shed (the one for the visitors), left is the pottery #5: inside the pottery #6: from left to right, the chief's house (painted white). winter-house, summer-house, backing-hut (partially underground). I don't know the purpose of the one construction in the foreground, but seeing as it is located above the gully, it's probably to hide the modern underworld #7: well, through the wooden frame you can catch a glimpse of the dugout canoe #8: from left to right, wood-workshop, museum-workshop (where they build and repair stuff), metal-workshop, fence of the pasture, back-side of the chief's house #9: roof of the backing-hut #10: interior of the summer-house, in the back room there's a huge single bed, in the front room a fire-place and chairs, etc. The pole leaning at the wall left of the door has a few rungs sticking out, turning it into a simple kind of ladder #11: the chief's house #12: chief's house, and winter house (they kept animals and people under the same roof, for biological heating ) #13: view from the weaver's hut, left to right, summer-house, chief's house, winter-house #14: fence and pasture at the back of the winter-house. They do keep a couple of goats here #15: view from behind the chief's hut, dugout canoe (pretty big), wooden-workshop and musum-workshop #16: room inside chef's hut, left the chief's chair, in the center fire-place with chimney. In the opposite corner there's a bed, but it's hidden by the chimney, estimated length of bed: 1.60 m #17: up the chief's chimney #18: the chief's axes #19 (this I added afterwards): interior of the burial mound, where a woman was buried with a hearse, horse-harness (they did not bury the horse, I belive), and plenty of bronze and pottery. Talk about equal rights / rites: women and children were buried in the same style as the men. #20 (also added): fully working reconstruction of the hearse: #21 (added): Yours truly, pretending to be the coxswain of the dugout-canoe, so the canoe is really not that small

I did a short video of clouds using the EL-Nikkor 105mm lens with a DB850 and Tiffen#12 stack. Hue rotated 45 degrees to make the sky blue, and contrast adjusted. Speed has been increased by a factor 10x relative to normal life.

Went outside, on a very humid day, to snap IR test shot with Super Takumar 35mm. Captured a nice image using liveview. Then I looked at the lens and saw the front element was totally covered in dew. Amazing how little it affected the infrared image. Always heard IR cuts through the atmosphere much better than visible light. Didn't realize it was this drastic. So cool! Pentax K-1 full spectrum modified by Kolari Vision, Super Takumar 35mm lens (thanks for the recommendation @ulf}, and Hoya R72 filter. Fogged uplens taken with Pentax Q and #01 (40mm eq. lens). Thanks for looking, Doug A

Nikon D800E ,AF-S NIKKOR 14-24mm f/2.8G ED ,RG830 1/250s f/8.0 at 24.0mm iso200 1/320s f/8.0 at 16.0mm iso200 1/250s f/8.0 at 14.0mm iso200

Nikon D600 full spectrum, mono, UV-Nikkor + Hoya R72. Images resized to 50% & JPG quality 70%

Taken last July with the Pentax K-01 mirrorless APS-c camera converted to full spectrum by Szabo. Used Pentax DFA100 macro and Pentax ringflash. F11 1/180 with Hoya R72 filter. A little surprised there isn't any false color. Looks more like 850nm IR to me. Perhaps it is because there isn't any sky. Photographed last season . Still processing some images. Thanks for looking, Doug A

I've been in Holland a few times over the last years, and here are a few souvenirs. I hope to be able to go there soon, and return to the main cities like Amsterdam, Rotterdam or Utrecht, which I've seen before, but only with VIS-cameras, alas. Equipment the usual (I usually forget to use the LensTagger-plugin, so can't remember the lenses, but probably a mixture of Soligor 21mm, Cassar-S 50mm and some 35mm or other for UV, and Canon 16-35 or 50 for IR) UV: Canon EOS 6D, b/w UV IR: Canon EOS 6D, 700 nm Holland is all about water, so first a few of those famous dykes: What else is Holland famous for, um, draw-bridges perhaps? Naturally, there is the coast to visit, first near Vlissingen: And perhaps the most famous beaches of them all: Scheveningen, where all of DenHaag goes to relax (with the main sights being the pier with the Ferris-wheel and the Bungy-jump tower, and the Kurhaus): How else to finish this than with bicycles (with the Oude Kerk in the background)

Nikon D800E ,Nikkor 8mm f/2.8 Fisheye Ai-S 1/200s f/8.0 at 8.0mm iso200, RG830

I've been searching for a good walkaround lens to use on my APS-C camera for IR but so far not really any luck. According to Christopher Frost, this lens, while being exceptionally cheap is also rather sharp and doesn't suffer from much distortion or other aberrations, so it piqued my interest. I have already tried the Meike 25mm f/1.8 which according to Kolari was good for IR, but A) it's not, it has a large hotspot and B) the image quality is just dreadful, with a lot of distortion, so I am selling it. I will probably buy it if nobody here knows, but I am asking in case anyone does, as to not waste my money, time and energy. Thanks.

Nikon D800 , Nikkor 17-35mm f/2.8D ED-IF AF-S ,RG850 f/8.0 iso100 25 images

Equipment [Sony a600 full spectrum, Carenar AUTO 35mm f/3.5, Zomei 850 filter] processed in darktable

Just a simple R72 photo. This was the Asahi Super-Takumar 35/3.5 at F/8 1/30" ISO100. Camera was the converted A7S. Processing included spinning the color wheel, white balancing on clouds, and some Photoshop autotone on the water (separately from the sky).