The Durst Siriocon 80 is a condenser which converts the enlarger from the standard 50mm to allow the mounting of an 80mm lens on the Durst Modular 70 enlarger, this is used when working with 6cm x 4.5cm up to 6cm x 6cm film stocks.
The M70 has a 150watt opal light source in the lamphouse, this condenser fits underneath the lamphouse, and is interchangeable depending on film size. The lamphouses deflecting mirror moves the light through the condenser to ensure a directional light and thus produce prints with sharp and brilliant image rendition.
The Siriocon 80 does not come standard with the M70 black & white kit.