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Lens Sigmatel 135 mm f/ 1.8

sigmasd14 :: 02.03.2013 21:04:27

lvl. 1 (Lens-Learner)

Lens Sigmatel 135 mm f/ 1.8
Format: 35mm SLR

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: C/Y (contax/yashica), Canon FD, FDn, Konica AR, Nikon F (FX, DX), Olympus OM, Pentax K, Minolta SR (MD, MC)

Optical scheme: 6 elements in 4 groups


Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr.)Height (mm.)


sigmasd14 :: 02.03.2013 21:13:55

lvl. 1 (Lens-Learner)

Hi all, this is my first post on here.  I found this site when searching for web comments on the Sigmatel 135mm f1.8.  The review here is wrong about the optical scheme.  Its actually 6 elements in 5 groups, not 6 elements in 4 groups.

Also, the minimum focus distance is actually 4 foot 3 inches, (1.33 meters) not 2 meters.

The Sigmatel is optically identical to the Sigma XQ 135mm f1.8, but is different optically to all other 135mm f1.8 lenses.

Its design was so good that Pentax borrowed most of it when they produced their SMC-A version.

I have compiled the known optical diagrams of the various 135mm f1.8 lenses out there (not all brand names are shown):

Nik_SSG :: 09.03.2013 01:17:09
Russia, Taganrog
lvl. 6 (Lens-Master)

Ответ для sigmasd14 (02.03.2013 21:13:55):

Thank you for help.

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