For this reason your home made lens is not going to be a general purpose replacement for a normal macro lens, but if you want to experiment with shallow depth-of-field macro photography with plenty of artistic expression without spending a lot of money, this is could be your perfect lens! Bear in mind that a slide projector lens has no aperture diaphragm, so you can only shoot wide open. You can use your camera's manual focusing aids to focus just like with any other manual focus lens. And your lens is complete… just mount it to your camera like you would any other lens! (See General notes on using adapted lenses if your camera tells you that you have no lens attached.) Then screw the focusing helicoid into a Sony E mount adapter (either normal for close focusing, or slim for focusing to infinity). Just put a ring of Blu Tack around the slide projector lens where it will sit against the focusing helicoid to hold it in place (you might find your projector lens sits snugly enough in the focusing helicoid to render Blu Tack unnecessary). The method for building this lens could hardly be simpler. So my total spend was £41 (or £47 including both normal and slim M42 adaptors for a full focusing range). Just modify my search terms once you get to eBay to find adapters for other cameras. Using a slim adapter will enable you to focus to infinity but at the expense of close-focusing distance, so you might want to get one of each! Use these links to find M42 adapters for Sony E mount cameras on eBay: Standard M42 to Sony adapter or Slim M42 to Sony adapter. If you have a mirrorless camera you can overcome this by using a 'slim' M42 adapter specially designed to mount focusing helicoids on a mirrorless camera. The furthest distance you’ll be able to focus on will be 1-1.5 meters. Important note: if you use a normal adapter designed to mount SLR lenses on your mirrorless camera, or if you are using DSLR, you won’t be able to focus to infinity. The least I've paid from a U.K supplier on eBay is £13. I paid £5 for one direct from an independant manufacturer in China via ebay, but it took a 2 months or more to arrive! If you want to be cautious and get one from a U.K.
These are available for pretty much every mirrorless camera (and some DLSRs too), and can be found cheaply on either Amazon or eBay. You can also use black tak, which is stickier than blue tak and is also less visible.Īn adapter to mount M42 lenses on your camera. You will use this to hold the slide projector lens in place in the focusing helicoid. If you want to use the exact same lens I used to make absolutely sure it will fit look for an Enna München MC Ennalyt 90mm f2.5… I found one on eBay for £13 it it has given me fantastic results.
And avoid lenses for Kodak Carousel projectors as they are too big to fit in the M52 helicoid. Lenses from famous high-end brands like Leitz, Rollei and Zeiss Ikon often command a significant premium, so if you have a limited budget avoid those (Carl Zeiss Kipronar lenses are particularly sort after and sometimes sell for £100s!). Most standard lenses from consumer 35mm slide projectors with a focal length of 85 or 90mm and an aperture of f/2.8 or f/2.5 should fit fine in the M52 to M42 focusing helicoid mentioned above. You can find slide projector lenses easily on eBay. I paid £22.69 for a Pixco M52-M42/M (36-90) focusing helicoid on Amazon. Note that is not a typo! I’ve never actually seen an M52 mount lens (M42 is a common lens mount for vintage SLRs) but an M42 to M42 focusing helicoid isn’t big enough to fit a slide projector lens (I tried!). The resulting lens will take great shallow depth-of-field macro shots! IngredientsĪ focusing helicoid designed to mount an M52 screw mount lens on an M42 screw mount SLR camera with a extension range of 36-90mm. This project uses cheap adapters to mount the same slide projector lens I used in the freelensing project on a mirrorless camera (a Sony A7II). Turn a 35mm slide projector lens into a macro lens
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