mawz Offline Upload & Sell: Off
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I used to use a cheap eBay adapter for this, it worked fine for my uses, which mostly was using 50mm, 100mm and 135mm lenses as cheap telephoto options.
The more expensive adapters have finer tolerances and are less likely to need shimming for infinity out of the box. Which is best depends on what lenses you are using. the shorter the focal length, the more sensitive the lens is to tolerances in adapter depth. Also if you are using lenses with CRC (floating elements), rear focusing or internal focusing, they are more sensitive than standard helical focusing lenses as their focusing systems are tuned for an exact mount-sensor distance.
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