Archive for the '3d print' Category
Wednesday, May 10th, 2023
When shooting wet plates, you deal with a very light insensitive process (about iso 0.5). So most wet plate artists wants to get their hand on a fast lens. Wolfgang, a former participant of my wet plate workshop got his hand on a very fast lens and sent it over to me. For the first time, you can get the plates from this project on eBay, starting from 1 Euro – http://ebay.mhaustria.com
This Delta HD-6C ML lens is pretty huge and was used in vintage HD protectors many years ago. If you want to know more about this kind of lenses, check this blog post: blog.markus-hofstaetter.at/2023/03/shooting-an-ultra-fast-lens-140mm-f1-with-an-ultra-large-format-camera/
See the full transformation in my video
The yellow part of the flower absorbs a lot of UV light and thats the reason it appears dark when I exposed the plate normally. Thats why I did this series of 4 different exposures. I think every single one of them has something special in it. Just for fun, I created a digital HDR image out of them
Wednesday, April 5th, 2023
In today’s video there is a little preview of my current project, info about my wet plate lecture in Graz and how smartphones change images.
For “non-photographers” some features are really great and very helpful. But then I ask myself why are these features not called by it’s name. Other functions, like changing or even modifying facial features, are almost creepy. What do you think?
In the gallery underneath are a few examples of my moon photos and the equipment. Of course you can take pictures of the moon with small cameras/lenses nowadays, but I was a bit skeptical about the pictures from smartphones back in 2021.
Here the link to my lecture about wet plate photography in Graz. https://www.fomograz.at/veranstaltungen-2023/
Wednesday, March 8th, 2023
In short words “this lens is something else”. It’s extremely fast, huge and has a strange focus distance. It was used in Sony CRT Projectors from 1997. I bought it some years ago from a very interesting guy. He had so many more great stuff in his shop and I regret that I did not buy more. It took me some time to find the right opportunity to use that lens. But I think it was worth the waiting. I am glad my friend and former workshop participant Alois Stingl came over with is wonderful ultra large format camera.
Before I could use it, it needed some cleaning, I used a cloth that was soaked with water and just put it on the lens without wiping to avoid more scratches.
I measured the lens at infinity to calculate the F-Stop. I measured 135mm and the front element was 145mm That is about a F0.9 lens. But a document I found on the internet told me its more an F 1.0 lens. Still crazy fast.
When I saw the yellow coating on the front element of the lens, I thought about Mathieu Stern’s video about radioactive lenses. If it really is made of Thorium, it is indeed radioactive, but only for a very small amount. Watch Mathieu’s video to learn more about this Material
Because the lens is very fast it is still dangerous. If it focuses the sun on something, it will start to burn immediately. That’s the reason you should not put the lens near a window and always put a lens cap on it.
I thought it would be interesting to calculate the crop factor of an 40x50cm ultra large format camera. If you use the common formula to calculate crop factors you will see that this plate size has a crop factor of 0.0067 compared to a full frame sensor. With that you also can calculate the comparable depth of field F-Stop. This would also be F 0.067 compared to F 1.0 on a full frame camera. When I tried to focus on the ground glass, I could barley find something in focus. Thats why you see me focusing for a very long time.
But there is more. a 140mm lens is a tele lens on a full frame camera, but it’s a wide angle lens on an ultra large format camera. This is because of the bigger plate size of the ULF camera. listen to my full explanation in the video.
To “connect” the lens to the camera, I designed and printed a basic flange in Tinkercad. It needed some pool line and tape, but eventually it worked out.
The next issue was the fact that my darkroom was not made for 40x50cm plates. only for 30x40cm ones. After some tests with smaller plates, we only had one cup of developer left. Beside that, everything starts to get unpleasantly expensive if you pour on plates with this size. So my goal was to make it work with only one attempt. I did some dry runs to get comfortable with everything. Not only the dark room work was something I had to prepare for, but also the camera. These old beauties all have some quirks. Besides that, Alois made a beautiful plate holder by himself. These holder needed also some special attention. But as explained in the video, I love these challenges. It makes the result at the end even more sweet.
To calculate the strobe power I needed, I used my wet plate strobe calculator that I created for my Patreon supporters. Since I made it, I use it all the time for myself, because it makes life much easier with the wet plate process. If you are a fan of analog photography and the wet plate process, have a look at our wet plate conversation magazine on Flipboard. Besides many great stories about our favourite process, you’ll wind there also work from other wet plate artists.
But this is not the end, because of some kind of funny coincidence, a former workshop participant sent me a very similar lens over. I am thinking to do a still life plate with that one. What do you guys think?
But there is more, I got also a very tiny lens. I guess I need to build a camera for this one
I hope you enjoyed that journey. It took me a long time to finish everything, but I am again glad that I worked through it.
Wednesday, December 21st, 2022
Maybe you missed my exhibition, or you want to come for a portrait or a workshop. Then you have now a chance to walk with me in a brief overview through my studio.
Wednesday, July 27th, 2022
Even I am an analog guy, I am not shy to bring new technologies to my darkroom. With the wet collodion process I always try to avoid touching anything unnecessarily. So I build some home automations to assist me with that. Every analog photographer knows the struggle. You work in your darkroom and in this very moment you don’t want to be disturbed. Just imagine, somebody opening the door and your film/paper/plate is exposed to light. For sure, you just can mount a red light on the entrance door and you are safe. But in my case (and I am pretty sure I am not the only one), I have a main entrance to the darkroom and two other doors. One door leads to my studio and the other door to my pouring room. That means if any of these doors are open, it is safe to enter the darkroom. If I just would have a red light on the main entrance door, it would be hard to understand for my workshop participants or sitters if it is safe to enter. Thats the reason I build a solution for that with Apple Homekit (you for sure can build it also with Google/Alex or anything else). But there is more. We all have running water in our Darkrooms. And I think some people will have a water detector. But what if you have to wash something with running water and are not in your darkroom all the time? I used Homekit for that as well. I show you also a solution for measuring time without touching anything. This may be very specific to the wet collodion process, but maybe it may be helpful for others as well. The last topic is about how I feel more safe with my 3D printer.
I looked also for Google/Alexa devices, but most of them are working with wifi instead of low power bluetooth or thread. So I am not sure if I want to recommend any of these, please let me know which ones work great and I post them here.
Works with Homekit: Eve Energy power switch
International https://amzn.to/3BfCqIH Germany: https://amzn.to/3cEAH5s
Eve Door sensor
International https://amzn.to/3J3MV3S Germany: https://amzn.to/3b4PiXu
Inernational: https://amzn.to/3Pxnn1n Germany: https://amzn.to/3POEJHv
Eve smoke is not available right now, I found only this alternative from Netatmo
Works with Homekit and Google/Alexa
Philips Hue lightstrip
International: https://amzn.to/3J7jnlR Germany https://amzn.to/3cGmZzd
Philips Hue Bridge
International: https://amzn.to/3z6bYP9 Germany: https://amzn.to/3cxRdEl
Philips hue switch
International https://amzn.to/3b1NGxY Germany: https://amzn.to/3Ox1kGX
Apple Watch app https://apps.apple.com/de/app/click-metronome/id705075264
Water resistant JBL BT Speaker (new version
International: https://amzn.to/3Be74Cj Germany: https://amzn.to/3J4DKjA
Wednesday, July 20th, 2022
In todays video I show you guys how to make Waterhouse stop if you do not have any existing ones.
Waterhouse Stop Database: http://waterhousestops.mhaustria.com
Gerald’s video about aperture & f-stop https://youtu.be/OaSq0ES1ArE
Website about measuring waterhouse stops: https://apenasimagens.com/en/measuring-lens-aperture/
Tuesday, July 12th, 2022
I wanted to cover topics in this video, that I did not find in other videos. Beside that I talk about some cool accessories you might want and wet HDR video means. Bonus: you can also get free stuff
Wednesday, May 4th, 2022
Corrine of www.corrinewestmedia.co.uk booked a wet plate workshop before the pandemic started. Two years later we were finally able to do it. The main subject was to get comfortable with the wet collodion process and to create images similar to the ones of spirit photographer William H. Mumler. Mr. Mumler created images (probably double exposures) where his clients could take a picture with their deceased relatives. The photograph of Mary Todd Lincoln with the “ghost” of her husband (Abraham Lincoln) was his most famous one. Corrine found my double exposure wet plates and that was the reason she contacted me in the first place. About two months before the workshop Corrine surprised me with a question: “Can we build a wet plate camera together?”. I talked with a friend and after a long visit at a DIY market I was sure that we can do it. A DIY Camera and capturing ghosts, that sounds like a fun workshop for me 🙂
I could not capture everything in the video, because I was focused to deliver a great workshop experience. So let me explain a bit here. I build a diy camera kit so to say. But I did not want to build everything. It was important for me that we put the major parts together in person, to really create a camera and an understanding how a camera works.
It took me a long time to figure everything out, I wanted to create a diy camera, that is adaptable and upgradeable without any special parts. It also should be able to shoot portraits and landscape and if something breaks, just go to your diy marked and get a replacement part. The only thing needed is my self designed camera back. I wanted to invent/adapt something that you can get in the market, but I was without luck finding such a part. The 3D printed design took many hours and a lot of filament to work as expected.
For the lens I went for a 150mm Leitz Dimaron (F2.8), Elmaron (F2.8) or Hektor (F2.5). These lenses have three things in common. 150mm is kind of a “normal” lens for the 4×5 large format and they all have the same diameter and not too expensive if you buy them online. All of them are pretty sharp as well as you could see in the video (this was a Dimaron)
The camera and lens support is build like this one in that posting: Camera and Lens support
For the Film/Plate holder I decided to go for the std international 4×5 holders. I had them water jet cut for a clean look and we modified it with silver wires, because these are more resistant against acid and fit into the silver nitrate workflow
We were super happy with our first result. The portrait looked awesome and the resolution of the lens is great. When you look closely at the video you will see, that we used two boxes for portrait distance.
Here is a detail scan of Corrine’s eye – pretty impressive result of a 4×5 plate shot with a self made camera and a projection lens.
For the spirit photographs that are inspired by Mr. Mumler we wend for wet plate double exposures.
To make our live easier, we marked all positions with sticky tape on the ground.
We decided to use my Dallmeyer 3B Petzval lens for the first double exposure, because it fits better to the time when the original images were captured.
The second double exposure was a bit more modern, but also should get the ghost look. For that we used a Zeiss 300mm F4.5 Tessar lens. This lens is pretty new (about 2ß-30 years old) and is very crisp. I thought that makes more sense for this kind of image and also fits to the story (see caption of the image)
What a great 3 Day workshop that was. We created so many different portraits. (more in the gallery) and time flew so fast. At this point I want to say thanks again to Corrine for visiting my workshop and trusting me with the camera design. I looking forward to see what she will do for her PHD with the wet collodion process.
Wednesday, December 22nd, 2021
Because I got asked a lot about 3D printing, I did this short introduction into it, or like I call it: let the fails continue.
It’s about the Artillery Sidewinder X2 and some broken parts. Very different to all these unboxing where everything works out of the box. I will show you also why a 3D printer can be very cool for photographers. Here you can find all tools I use for wet plate, 3D printing and filming: http://list.mhaustria.com
Tuesday, December 14th, 2021
In todays video I documented my fails (wood working and 3d printing with sidewinder x1 – also building plate change of the sidewinder x1) while I tried to mount my new lens on my camera. I got this lens, because I do more and more wet plate family portraits and for that I wanted a sharp affordable lens. Normally I would show you guys how I did a family wet plate portrait(its online now, scroll down for the second part). But I couldn’t do it, because of our lockdowns. So I worked on a self portrait. To make this easier, I turned my studio into a darkroom, so I can move without getting a ghosty image on the plate. Because I put metal sheets into the ceiling during my studio renovation, I could mount the red light easily with magnets. To see the whole story, watch the video 🙂