Halfway through this video I checked the comments and was shocked to see how small your view and subscriber count are. This is such a clear and easy to follow explanation, and a criminally underrated video.
I found the panomicron blog about viewfinder design and thought I'd be happy with a plain viewfinder for the 6x17 camera I designed. I thought I could live with physical mask overlays on the objective lens, then I found your hybrid viewfinder post. Wow what a great post and video... but curse you! Now I feel compelled to try to make a hybrid viewfinder with changeable projected overlays. Great job... subscribed
I subscribed to you because I think you deserve it. Not particularly interested in cameras, but I will watch your videos until your viewers increase because the Algorithm will certainly give you much more exposure with the effort you put in this video. Whatever algorithm brought me to your video... 👍
Amazing project! You might be able to take some ideas from VR, by rendering the inverse of the chromatic aberration and distortion on the phone, so that when viewed through the lens, the lines will be straight and abberation free.
I wasn't expecting that second prism to be over the screen. I thought the split screen would face the phone screen directly. Of course, this would require the second prism to be over the lens on the phone.
Thank you so much for this wonderful video! For a hobbyist, there's so little practical information on optics beyond the general "how it's made" stuff. Wishing you many more subscribers!
Nice project, can you try to build n analyse a analogue Director's viewfinder.There is no much material available for the instrument online to study about it n build one
A directors viewfinder like this one? www.denz-precision.com/en/cinetec/oic-35-opt-viewfinder/ I would guess that just works by putting a ground glass (with frame lines) in the focal point of the lens (where the film/sensor would be) and then flipping the image with mirrors/prisms so it's correctly oriented when looking through the other side of the viewfinder. There may be an additional lens for the eye so it's more comfortable to focus on the ground glass. The problem with that it's rather clunky.
@@vlztn ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lMptU-YjIzQ.html I was designing one for personal use n stuck as there is no enough material to refer to online...thx for the reply
could you do something like this for a rifle scope? Is there any books or websites you would recommend to learn how to do this in more depth? If you were to add this in front of a scope how would it affect the transparency of the scope with the view finder in its path? Could you still get 90 % transparency? Your project is fantastic!! thank you for posting.
I listed my sources at the end of the blog entry: volzo.de/thing/hybridviewfinder/ The optics books explain the fundamentals in depth but are not exactly beginner friendly. To the best of my knowledge riflescope designs are basically the same as the viewfinder but in reverse (thus increasing the magnification instead of reducing it) and are not using a Galilean geometry (so they need to have a focal length sufficiently long that the image can flip inside the riflescope barrel and exits upright again). That makes the optical design a lot more complex than just a positive and a negative lens with a beamsplitter in-between and less suitable for DIY projects. But the concept is the same: put a beamsplitter in the right spot. Controlling the transparency is easy, it depends solely on the beamsplitter and ratios like 50/50 or 70/30 are common. I remember seeing a similar project with a small single-color display for a riflescope a few years ago, but couldn't find it in a quick search.
ok thanks..would you happen to know the transmission rate of those len's combined with the prisms? and if this setup would be the best setup to use on a regular rifle scope? I want to add my own small screen in the path of the scope so i can add some images like you did...but its for a scope so i want to keep the profile down if that is possible. Perhaps a different configuration..thanks
I'm afraid I don't know enough about riflescopes in general to say anything helpful in that regard. The transmission rate is probably something you can calculate from the datasheet of the lens manufacturer.
Great project and a fantastically clear presentation! I was in the camera/photo biz before I retired, and remember well when the X100 was first announced at Photokina in Cologne Germany that year :-)
