Instamatic + film adapter + lomo 100 35mm

I found an old Kodak Instamatic at my grandparents' house during the Christmas break. They were sure it wasn't working anymore and hasn't been used for a very long time. I bought a 35mm adapter to test it and I used a roll of Lomography 100. The result is actually better than expected! I read somewhere that the advancing is different, so I tried to leave a black shot between the frames. However, some still overlap ... suggestions? Not the sharpest lens but a good change in style :)

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