Post Number: 16
|Posted on Friday, January 29, 2010 - 08:05 am: ||
hi,i am thinking about getting this lens,its in mint condition,tried to look it up but cant find anything about it,is there anyone who has or has used this lens and can tell me something about it,
Post Number: 7
|Posted on Wednesday, May 25, 2011 - 08:41 am: ||
If it is "Z" it may not be M42. Think it may be Fuji "X" mount which only fits Fuji. Generally it is a good lens like any other 75-150mm.
Actually, in the industry, one "genius" will design a lens and other manufacturers will then copy it. Then third party manufacturers may or may not "tweak" the design to make the aperture a bit faster or similar.
An example would be the 100-200mm zoom. Canon made one, then Minolta made theirs, then Sigma made one. The only real difference in many lenses is how well they were made in terms of quality materials and tolerances.
Post Number: 927
|Posted on Thursday, May 26, 2011 - 05:32 am: ||
The original 'Z' was a M42 screw mount and there are plenty of sample photos on the internet to allow performance to be judged. Fuji, like many manufactures who joined the early rush to interchangeability on the M42 bandwagon, soon realised that all that wrist ache went away if a bayonet mount was used.
The sweeping statement, that most lenses of similar focal lengths were/are basically the same, can only be applied to the multitude of 'own brand' rebadged and mediocre optics that were churned out by dozens of assembly lines at the time. However, it is absolute rubbish to apply sweeping generalities to the optical output of the major manufactures, such as Canon. There is a logical explanation as to why zoom lenses appear to fall into certain focal length bands for all manufactures of 35mm SLR equipment - Better people than this writer have written on the subject, but basically it all comes down to magnification ratios based on the standard 50mm lens.
Post Number: 53
|Posted on Thursday, May 26, 2011 - 10:26 am: ||
Well, in the case mentioned by Photographer X, referring to 100-200mm zooms, Canon introduced theirs in 1966. Some time afterwards Minolta introduced theirs in MD mount. It was virtually identical physically and had the same spec.s so safe to say it was a "copy". Later on Olympus made one that, again, physically was virtually identical but improved the spec.s to get the aperture to f5 instead of f5.6 for their OM series. Somewhere around that time, Sigma introduced theirs, also physically virtually identical, but improved the aperture to f4.5
The example he used could just as easily have been the 28mm f3.5 Now there was a lens that showed up in a lot of top manufacturer's stables unaltered.