Hi all, I have some pretty good tele and wide lenses for Nikon. And I love my 50mm (I think it's an Ai?). However, the copy I got is mechanically starting to fall apart and do some weird things. Like an old clunker, it still gets the job done but barely That being said, I'm looking to replace it with a really good (But not ludriciously expensive) 50mm. I've looked at maybe the current 1.8D and it's a gooder cheap but look to be not very contrasty or sharp wide open. I heard the 1.4D is not much better? (Let me know if I'm wrong! Maybe I'm looking at bad samples). I've also considered getting an older Zeiss T* 50mm F2 and then using an adaptor but I think the Nikon to Zeiss adaptor needs the "magnifying lens", which (on the ebay ones anyway) I heard kills some of the resolution. Also considering getting a Leica R 50mm F2 and getting Nikon to Leica adaptor. Not sure if I can use at infinity though? Anyways, I'm considering options but would like some guidance Again - contrasty and sharp wide open. Thanks!