The OLYMPUS 35 DC is a high-performance rangefinder camera equipped with an F.ZUIKO 40mm f/1.7 lens. - Brand: OLYMPUS - Model: 35 DC - Lens: F.ZUIKO 40mm f/1.7 - Film Speed: ASA 100 - DIN Speed: 21° DIN Thank you for viewing. The shutter was heavy and wouldn't fire. The timer works, but stops midway. The inside is stiff and I haven't been able to check it. It feels like it's almost ready to open, so someone who knows how might be able to open it. It's a junk item as I don't know if it works.