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Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.
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I just won a Sigmatel 135/1.8 fast telephoto
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Posted: Mon Oct 04, 2010 2:47 pm
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Posted: Mon Oct 04, 2010 2:47 pm
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Plutonium: These fast lenses will not do well in bright light, so how about doing a comparison of the two lenses, both at fully open and in muted light? I'd be curious what the actual difference is in exposure. I've read some opinions that the Series 1 was actually faster than labeled.


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Posted: Wed Jun 22, 2011 12:45 am
Post subject: Spiratone 135mm f1.8 in Minolta MC/MD mount
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Posted: Wed Jun 22, 2011 12:45 am
Post subject: Spiratone 135mm f1.8 in Minolta MC/MD mount
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My copy of this giant hunk of glass came in Minolta MC/MD mount.
I'm using an adapter from Fotodiox, it has glass in it.
I know this isn't the correct solution, but, I wanted to play as soon as I could.
I am uncertain if the adapter or the lens causes the vignetting I see in my pics.



From the brief play time I had, the first two photos suggests swirly bokeh:



This photo shows the great far distance blur of this lens:


The following series show the great close distance blur of this lens:

- f16 :


- f5.6 :


- f1.8 :


this ^^^ series of 3 is a pool railing, BTW...


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Posted: Wed Jun 22, 2011 12:48 am
Post subject: Spiratone 135mm f1.8 in Minolta MC/MD mount
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Posted: Wed Jun 22, 2011 12:48 am
Post subject: Spiratone 135mm f1.8 in Minolta MC/MD mount
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hmm, the preview was good, the posting is not?
Oh, patience grasshopper, patience...
Seems to work now, good.


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Posted: Mon Mar 12, 2012 11:34 am
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Posted: Mon Mar 12, 2012 11:34 am
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The Sigmatel is absolutely gorgeous to look at.
God, i knew subscribing to this site would have been a bad idea, now i'm screwed.
Very Happy


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Posted: Mon Mar 12, 2012 1:43 pm
Post subject: The Sigmatel is NOT the same as the Spiratone...
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Posted: Mon Mar 12, 2012 1:43 pm
Post subject: The Sigmatel is NOT the same as the Spiratone...
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Update:
I have been researching the optics and mechanical designs of various 135mm f1.8 lenses.

The following models are all optically identical (5 elements in 4 groups) and all were made by Mitake:
Spiratone Plura-Coat, Porst, Computar, Promura CP-Lux, Kenlock, Formula 5, Eyemik, Apollo, Accura, Varo, Vivitar and Weltblick (possibly a few more I don't know about too).

The following models are optically identical too (6 elements in 4 groups) but of a different optical and mechanical design to the ones above...They were made by a currently uknown manufacturer (Which was possibly Goyo Optical, Yoshida Industries, Tomioka or Tokina):
Spiratone (the "normal" version), Polaris, Raynox-Polaris, Carena, Beroflex and Samigon (and again, possibly a few more I don't know about too).

The Soligor version has a simple optical design (5 elements in 3 groups) and its unique to it and no other 135mm f1.8 lenses, at least that I know of.

The Sigmatel and The Sigma XQ versions are optically identical (6 elements in 5 groups) and both were made by Sigma.



Last edited by DSG on Fri Mar 15, 2013 4:15 pm; edited 1 time in total


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Posted: Tue Mar 13, 2012 10:11 am
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Posted: Tue Mar 13, 2012 10:11 am
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I once had a Formula 5 MC 135mm f/1.8 made by Mitake. Already sold it.

In indoor shots the sharpness looks OK at wide open. On outdoor daylight shots I sometimes spotted some purple-green LoCA.












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