Yashica FX3 2000 SUPER problem with 50mm 1.9 objetive

Hello and welcome to the Forum.

My first suspicion would be that the mirror has slipped by about 1.5-2mm rather than a f1.9 lens having some form of rear-focusing problem. 

Which 50 1.9 lens are you talking about: DSB, ML or ML C?  Can you take a close-up photo of the front of the mirror or at least check that it is flush with its support frame.  I have tried to replicate the problem using a FX-3 Super 2000 and each of the the first two lenses and I can't get anything to snag.

Hello str,

I hope the re-setting of the mirror solves your problem.

As for recommending some lenses to expand your photographic opportunities, there are literally hundreds of options in terms of focal length, prime or zoom and so many manufacturers....  I would suggest spending a little while looking through the Forum's Lenses and 3rd Party Lenses sections to get an idea of what Members favour.

If one's looking to do this on a budget and expand your photo-taking capability, it's probably easiest to add a wide-angle and a medium telephoto to your 50mm lens; I would recommend a 28mm and a 135mm as a good starting point; it largely depends on what you are planning to photograph but for general photography - landscapes, portraits, etc. - this will be helpful.  You need to ensure that the lens has a C/Y or Contax/Yashica mount and once you have established that, you have a massive choice available.  If budgets are a consideration, you can forget about the Contax Zeiss T* lenses but Yashica's ML lens range is comprehensive and the quality is generally very high and, with a few exceptions, they're not too expensive. 

If I was buying, I'd probably aim for a ML 28mm f2.8 and ML 135mm f2.8 which with your 50mm will give you 3 prime lenses - wide-angle, standard and portrait/short telephoto.  You can then decide if you'd like to use a zoom to enjoy the flexibility it can offer; here Yashica has one of the most comprehensive range of any manufacturer.  There are a few that can be expensive (ML 28-50, ML 35-70 f3.5, ML 35-70 f4, ML 70-210 f4) although bargains can sometime be found but lenses like the rather fine ML 35-105, ML 75-150 and the classic ML 80-200 can offer great value.  There is another excellent ML lens, the 28-85mm, which I would recommend but you need to be sure that it is free from any signs of haze as some seem to have issues with balsam separation but a good one is a super lens to use.  As you can see, with just two lenses: ML 28-85 and ML 80-200 you can cover everything from wide-angle to telephoto. 

Of course, there are other lens-makers and they too can offer great glass at reasonable (and sometime very cheap) prices.  Names to look out for include Super-Paragon, Sigma, Tokina, Vivitar and Tamron.  If you spot a lens with the C/Y mount that you think may be right for you, do check it for reviews on the web.

The Tamron Adaptall range of lenses is particularly interesting as they offer an adapter to fit Contax/Yashica SLRs but if you have other SLRs, they usually have adapters for them too so with 1 lens and 2 adapters, you can take photos on 2 different systems.  Tamron has a fair selection of prime lenses and a large number of zooms; most of their lenses are inexpensive but their superior SP range can prove costly.  Both Vivitar and Tokina offer similar superior quality ranges (Series 1 and AT-X respectively) that can be expensive but as with Tamron's Adaptall lenses, the non-premium quality glass is pretty good.  

A really good system would be your FX-3 Super 2000 + 50 1.9, ML 28mm, ML 135mm and ML 80-200. I might add a set of Auto Extension Tubes so that you could do some macro work; they're usually pretty cheap as they don't contain any glass.  A 2x Teleconverter can be a useful accessory though most will slightly degrade the image and you'll lose 2 stops of light in return for the doubling of the focal length.

I'm sure other Members of the Forum will have alternative opinions...