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Light shielding an enlarger lens

Manuel Iniesta View Drop Down

Joined: 08 November 2018
Country: Argentina
Location: Buenos Aires
Status: Offline
Posts: 25
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    Posted: 17 January 2020 at 17:04
Hello everybody!

I'm constructing a film digitizing rig composed of a Sony A7R4, an enlarger column + baseboard, a M42 bellows and and a Fujinon EX 75mm f4.5 enlarger lens.

I lay negatives strips (just B/W so far) over a 14mm thick piece of glass backlit by a led device. The Fujinon can cope with the A7R4 resolution better than my Sony 100mm f2.8 Macro, besides the bellows makes it much easier to focus with finesse.

But I found out that the various openings in the Fujinon generate light gatherings that lower the contrast and micro contrast a lot, producing dull and compressed pictures.

Which is the best way to shield the lens and/or fill the openings? Just black tape? Is there something I am missing out?

Thanks in advance.

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