![pentax 645 vs contax 645 pentax 645 vs contax 645](https://images.squarespace-cdn.com/content/v1/55d537b4e4b0c18ea41a132c/1544248632091-BCMILT4BGD71HOVCWAOO/Jom+%26+Emily+Polo+Barn+Lexington%2C+Ky+Wedding-24.jpg)
Prisms are heavier and reduce the visible image area in your finder, meaning that you might get unexpected elements in your composition. WLFs are lighter and provide a 100% view of the focusing screen, but can only be used for landscape-orientation shooting.
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You can choose from waist-level finders, which allow you to look down onto a ground glass, or from traditional eye-level prism finders, both metered an un-metered. Interchangeable film backs allow you to swap film types mid-roll, or shoot preview images on instant film. Modular system cameras are very useful for some people. That said, the Pentax also allows simple adaptation of the fantastic lenses from the larger Pentax 6x7 SLR. The Pentax is actually less modular the film back, prism finder, and trigger grip are built-in. The Mamiya appealed to me because it can pair with the lens with the widest aperture for a medium format camera: an 80mm f/1.9. For example, the Bronica employs leaf shutter lenses (exclusively), which is great for flash shooters since you can sync at all shutter speeds. The Mamiya 645, Pentax 645, and Bronica ETR are common examples, each of which bringing something unique to the table. The most common medium format cameras are modular SLRs, which consist of a body, film back, finder, and lens as well as other optional accessories. Furthermore, medium format cameras themselves are designed completely differently than their 35mm relatives, adding a bit of intrigue. Even the 6x4.5 format, the smallest of the medium format aspect rations, offers twice the image size of 35mm film and seem to create a wholly different look. It wasn't long after I started shooting film that the inevitable happened: I was seduced by medium format (beyond my work with the Holga).