The Pentax ZX-7 was also marketed as MZ-7. These two models are technically identical. For a number of years Pentax produced two styles of SLR's, one with traditional controls and one where the exposure mode is set on a dial like on today's DSLRs. The MZ-7 / ZX-7 represents the latter style. But even then you can still set the aperture on the aperture ring in which case Av and M exposure modes are possible. Lenses without an aperture ring and lenses where the aperture ring is set to the "A" setting can be used in all exposure modes. Metering is done with the lens fully open in any event since the lens mount is a fully functional KAF mount. In other words, this camera can be used with all Pentax K-mount lenses. The only restriction is that power zoom is not supported by this mount; power zoom lenses will have to be zoomed manually. DA lenses may create dark corners since these lenses are designed for the smaller APS-C format. The Pentax MZ-7 / ZX-7 has the traditional exposure modes Av, Tv, and M in addition to a number of program modes: Green, Portrait, Landscape, Close-up, Action and Night scene. The camera also has the auto-pict mode where it automatically selects the program modes that fits the scene the best. Extra flash functions with external flash: Contrast control. The MZ-7 /ZX-7 was later replaced with the MZ-6 /MZ-L / ZX-L which has a few more features.