Yes thats upgrade The D300s plus 18-105 mm is probably a bit much for the UCA even if you didn't get vignetting with the zoom lens ( which you will ). In AF mode the lens will bump up against the UCA when zooming. You can test it out though by setting it up on a table and sliding the camera up to the eyepiece.
I'm using second hand 24/28/35/50 mm Nikon lenses with the Panasonic Lumix G1 with good results. I find the best focal length to be the 24/2.8 which has a 52 mm thread if you have a DCA adapter but will fit on the UCA when reversed.
Neil.
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Nikon D300s
I'm using second hand 24/28/35/50 mm Nikon lenses with the Panasonic Lumix G1 with good results. I find the best focal length to be the 24/2.8 which has a 52 mm thread if you have a DCA adapter but will fit on the UCA when reversed.
Neil.
...................................................
Nikon D300s