This is the main condenser lens assembly for the Omega B-600 condenser lamphouse. Two condenser lenses are mounted in a metal frame, which fits into the recessed area in the lamphouse. Refer to the B600 enlarger manual for installation instructions and cleaning procedure. This lens assembly can also be used to upgrade a B635 35mm enlarger to B600 specification. (Note that such an upgrade also requires changing the lamp to Omega #471-038 or type PH140.)
An auxiliary condenser lens for use with lenses shorter than 50mm focal length is also available - please see the separate listing.
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