Reply to thread

Message

<blockquote data-quote="Mike D90" data-source="post: 252803" data-attributes="member: 17556">I would stick with Nikon reverse mounts although there are several other makers of them.&nbsp; There are two kinds of reverse mounts.&nbsp; There is a reverse lens mount that reverse mounts one lens onto the filter threads of the main lens.&nbsp; This is called &quot;lens stacking&quot;.&nbsp; It has filter threads on each side of the thin ring.&nbsp; I suggest metal rings instead of plastic.&nbsp; Also, you have to know the filter size diameter of each lens you plan to use together.&nbsp; Many times they are different and you would need several rings in order to accommodate a choice of lenses, i.e. 52mm to 58mm lens adapter.The other ring simply screws into the filter threads of the lens you plan to reverse mount and it adds the F mount bayonette lugs so you can mount the lens backwards onto your camera.In either scenario you will lose in camera metering and auto focus.&nbsp; You have to use something like tape to hold the aperture tang open as there is no way to manually adjust it and the camera no longer powers the lens chip to adjust it automatically.AF-S lenses have no adjustment for aperture as the camera does this electronically so they have to have their aperture tang held open as well.&nbsp; The camera has no idea what aperture it is on when a lens is mounted reversed.remember, even with one lens mounted correctly, the lens mounted on the end of that lens is what you are shooting through.Older &quot;D&quot; lenses, even with manual aperture ring, still have to be held open as the ring only served as a manual &quot;stop&quot; so that the camera would not stop the lens aperture past what was manually set.</blockquote>

[QUOTE="Mike D90, post: 252803, member: 17556"] I would stick with Nikon reverse mounts although there are several other makers of them. There are two kinds of reverse mounts. There is a reverse lens mount that reverse mounts one lens onto the filter threads of the main lens. This is called "lens stacking". It has filter threads on each side of the thin ring. I suggest metal rings instead of plastic. Also, you have to know the filter size diameter of each lens you plan to use together. Many times they are different and you would need several rings in order to accommodate a choice of lenses, i.e. 52mm to 58mm lens adapter. The other ring simply screws into the filter threads of the lens you plan to reverse mount and it adds the F mount bayonette lugs so you can mount the lens backwards onto your camera. In either scenario you will lose in camera metering and auto focus. You have to use something like tape to hold the aperture tang open as there is no way to manually adjust it and the camera no longer powers the lens chip to adjust it automatically. AF-S lenses have no adjustment for aperture as the camera does this electronically so they have to have their aperture tang held open as well. The camera has no idea what aperture it is on when a lens is mounted reversed. remember, even with one lens mounted correctly, the lens mounted on the end of that lens is what you are shooting through. Older "D" lenses, even with manual aperture ring, still have to be held open as the ring only served as a manual "stop" so that the camera would not stop the lens aperture past what was manually set. [/QUOTE]

Verification