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Sigmatel "Multi Scalematic" Y/S 135mm F1.8 | | Latest Review Posted | Sigmatel "Multi Scalematic" Y/S 135mm F1.8
I bought this lens practically mint, for less that £55, including delivery back in 2008.
I was'nt really expecting it to be any good as I had been lead to believe that all the old 135mm f1.8 lenses that are available were optically one and the same, and I'd seen some pretty awfull wide open samples from lenses like the Spiratone 135mm f1.8.
However, I have subsequently discovered that it has completely different optics from all the other 135mm f1.8 lenses out there, like the Spiratone, and the Soligor, except for the optically identical Sigma XQ version. The Sigmatels optical design proved so effective that Pentax decided to borrow most of it when they produced their SMC-A version.
Here you can compare six optical diagrams used in various 135mm f1.8 lenses, including the Sigmatels:
http://imageshack.us/a/img715/1344/135mmf18optics.jpg
Both Spiratones and the Soligor version have an 82mm filter thread and weight about 1.2kg but the Sigmatel, which is physically smaller, has a 77mm filter thread, so the Sigmatel can use cheaper and easier to find filters and lenshoods, and it only weighs about 820g too.
I use a "Sonia Brand" 77mm lenshood which I keep on it at all times. Here is how it looks with the hood when fitted to my camera:
http://img202.imageshack.us/img202/8408/sigmatel1c.jpg
It performs best between f4-f5.6...Here are some handheld samples, some taken at f4 and some at f5.6:
http://img3.imageshack.us/img3/339/sdim3217bc.jpg
And a 100% crop:
http://img851... | |
