Without a doubt it would have to be the 1.4 Takumar for your SP, anything else is just sacrilege. Prices are on the way up, but they are still a bargain, and don't dismiss the older single coated Super Takumar, still a great lens, and one I actually prefer for B&W.
The older Super Takumars are Coated that doesn't mean "Single Coated" multiple coating was first used by Zeiss in 1938 although probably only became more prevalent in the late 50's & 60's.
What Pentax introduced was Super Multi=coating based on technology developed in conjunction with Zeiss.
Last edited by Ian Grant; 03-01-2010 at 09:56 AM. Click to view previous post history.
If you can accept 55mm instead of 50mm then some of the nicest ones are the 55/1.8 SMCT and 55/1.8 SMC. The 55/2 versions of these lenses seem to be the same but with different markings. The 50/1.7 Alpa (Chinon) is a very good lens. It was made for the Si 2000 (also a Chinon) and focuses to about 1:3.
I have a Carl Zeiss Jena Biotar 1:2 5,8 cm T lens with M-42 mount on my Praktica MTL 5 B, which I really love. Someone gave it to me as a gift several years ago. I like it for its contrast and sharpness as well as for its build quality.
i am shopping and wonder what is the best, or one of the best lens for my spotmatic around the 50mm focal!
If you are looking for the "ultimate" in Pentax lenses but could live with 85 mm., might I suggest the Pentax 85mm Ultra-Achromatic. (No 'glass'... elements are fluorite and quartz... for imaging in the UV to IR range)
At a certain point with the Japanese cameras, there wasn't a whole of performance difference between many of the 50mm lenses, as most were based on the Carl Zeiss Planar.
I think the original Planar design was 5 elements in 4 groups.
Over time the Planar name became more of a brand than a specific design, as there are 6 element and 7 element designs.
And even though a lens may have the same elements and groups, the exact curvature of the surfaces and order of the groupings vary quite a bit.
Heres some snippets from the web:
Zeiss calls this the Zeiss Planar T* f/1,4 50 mm ZF
Optics: 7 elements, 6 groups. T* brand multicoating.
New FD 50 mm f/1.2L
Lens construction: 6 groups, 8 elements
New FD 50mm f/1.4
Lens construction :6 groups, 7 elements
New FD 50mm f/1.8
Lens construction: 4 groups, 6 elements
AF Nikkor 50mm f/1.4D
Lens construction 7 elements in 6 groups
Nikkor Ai :
Focal length/Aperture: 50mm f/2.0;
Lens construction: 6 elements in 4 groups
Focal length/Aperture: 50mm f/1.2
Lens construction: 7 elements in 6 groups
Focal length: 50mm; Maximum aperture: 1: 1.4
Lens construction: 7 elements i n 6 groups
Focal length: 50mm; Maximum aperture: 1: 1.8
Lens construction: 6 elements in 5 groups
50mm f1.4 .. 8-element Super-Takumar (M42 screwmount) with one radioactive (!) element
50mm f1.4 .. classic 7-element Super-Takumar