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<p>[QUOTE="SuperDave, post: 2401915, member: 1892"]Vess1, the XTi is one generation short of being able to use the tethering setup - it lacks Live View, which is imperative to real-time viewing. It would make this whole process far more cumbersome and frustrating to have to try and manually-focus with only your viewfinder as a visual aid. That's why the XS is the "sweet spot" - it's the oldest and cheapest of the Live View-enabled Canons, essentially the XTi's sensor with the newer firmware.</p><p><br /></p><p>Threads vary with these lenses, but there's an adapter available for just about anything. Part of the learning process is understanding the thread types and what you need to connect one component to another. Differing bellows use differing threads/mounts, as well. The Schneider (my example, at least) uses the Leica M39 (mm diameter) thread, and the bellows an M42 thread; I have a little adapter ring which works between them. Another adapter at the top of the bellows connects its' M42 to the Canon EF mount on the camera.</p><p><br /></p><p>M39 (39mm x 26tpi), M42 (42mm x 1mm thread pitch) and C-mount (1.0" diameter x 32tpi)) are the most common.[/QUOTE]</p><p><br /></p>
[QUOTE="SuperDave, post: 2401915, member: 1892"]Vess1, the XTi is one generation short of being able to use the tethering setup - it lacks Live View, which is imperative to real-time viewing. It would make this whole process far more cumbersome and frustrating to have to try and manually-focus with only your viewfinder as a visual aid. That's why the XS is the "sweet spot" - it's the oldest and cheapest of the Live View-enabled Canons, essentially the XTi's sensor with the newer firmware. Threads vary with these lenses, but there's an adapter available for just about anything. Part of the learning process is understanding the thread types and what you need to connect one component to another. Differing bellows use differing threads/mounts, as well. The Schneider (my example, at least) uses the Leica M39 (mm diameter) thread, and the bellows an M42 thread; I have a little adapter ring which works between them. Another adapter at the top of the bellows connects its' M42 to the Canon EF mount on the camera. M39 (39mm x 26tpi), M42 (42mm x 1mm thread pitch) and C-mount (1.0" diameter x 32tpi)) are the most common.[/QUOTE]
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