De 503 CW heeft een ingebouwde TTL-OTF flits meter systeem en de mogelijkheid om mer de CW Winder te werken. De schuivende spiegel maakt het mogelijk altijd (ook met tele lenzen)het gehele beeld door de zoeker te zien. Betere zwartcoating in de camera zorgt voor een betere lichtopbrengst op de zoeker. De 503 CW is standaard uitgevoerd met het lichtsterke Acute Matte matglas. Deze camera is de nieuwste versie in de aloude 500 serie van Hasselblad.

Specificatie's in het Engels:p>

• Camera body: One-piece, cast aluminium alloy shell with 3/8 and 1/4 socket threads and tripod plate for rapid mounting with the Hasselblad tripod quick-coupling accessory.
• Film format: 6x6cm or 6x4.5cm resp. 6x3cm with format masks. 6x4.5cm with accessory magazine.
• Film choice: 120 and 220 rollfilm, 70mm perforated film and Polaroid film with accessory magazines.
• Film advance: Manual or motor driven with Winder CW.
• Lenses: Interchangeable Carl Zeiss CFi/CFE-, CF-, CB- and C-lenses with focal lengths of 30, 40, 50, 60, 80, 100, 120, 135, 150, 160, 180, 250, 250Sa, 350Sa and 500mm. Teleconverter 1.4XE, Converter 2XE and the PC-Mutar 1.4X Shift Converter.
• Shutter: Between-lens shutter with speeds from 1 sec. to 1/500 second and B.
• Flash sync: The between-lens shutter provides flash synchronization up to 1/500 second.
• Flash Control: TTL center-weighted dedicated system with OTF metering. Controls flash duration automatically. Film speed range from ISO 16 to ISO 1000.
• Exposure metering: Meter Prism Viewfinder available as accessories. Center-weighted TTL flash metering.
• Viewfinders: Fitted with GMS, Gliding Mirror System, which always provides an entire image in the viewfinder. Interchangeable focusing screens for different applications. Folding focusing hood that can be exchanged for prism viewfinders with 45i and 90i viewing angles as well as correction eyepieces.
• Compatibility: All CF- and C- lenses. All magazines manufactured since 1957. All viewfinders and most other accessories.
• Dimensions: With focusing hood, Planar CF 2.8/80mm, film magazine A12: width 4.5" (114mm), height 4.3" (110mm), length 7" (180mm).
• Weight: With focusing hood, Planar CF 2.8/80mm, film magazine A12: 3.3lbs. (1.5kg) Camera body only: 1.3lbs. (0.6kg)