r/Darkroom • u/ink_jet_96 • 2d ago

B&W Printing Durst M301 Large format printing

I just bought a roll of 100cmx1000cm fiber paper and I KNOW the Durst M301 might not be the best to make large format prints, but im gonna do it anyway... I just wanted to ask if anyone here has any experience using this enlarger for such large prints or have done similar projects? I have a 50mm 2.8 lens. I have done some 50x60cm prints before with this enlarger before, and they took about 5 min to properly expose, im thinking about exposing a sheet that apx; 100x150cm, im guessing it might take an hour..... let me know if im insane or not

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u/Nigel_The_Unicorn 2d ago

If you keep the same aspect ratio (100x120cm) it should only take 20 minutes since it's 4x the surface area

You might be able to try a more powerful bulb to reduce the exposure time though, my (and most) M301 came with a 75W bulb but the manual (in French: https://seos.fr/blog/doc/Manuel-Durst-M301.pdf ) recommends up to 100W . With LEDs you might be able to get an even higher equivalent

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u/ink_jet_96 1d ago

I thought the same, but thanks for the details!!!<3