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02-15-2011, 10:55 PM   #1
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prima's Avatar

Join Date: Feb 2011
Location: Malang (East-Java)
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[langtitle=id]Astron lens[/langtitle]

i got MC ASTRON-A 28-80 F/3.5-4.5,very high built in body,metal chassis but no internal focus...i use in my P30T

my question :

you know ASTRON lens history? [/lang]

12-12-2013, 11:41 AM   #2
PiDicus Rex's Avatar

Join Date: May 2013
Location: Melbourne, Australia
Posts: 1,263
This question came up as a Google result... when I was searching for history on the Astron brand.

AFAIK, they are rebranded Sigma lenses. I have an Astron branded 28-70 f3.5, and some Sigma's from the same era, items like the knurled grip for the Iris ring, rubber grips, machined points in the bayonet end, are all identical between the Astron and the Sigma units.
07-08-2017, 08:55 PM   #3
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Join Date: Jun 2015
Location: Melbourne
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I recently bought Astron MC ZOOM MACRO 1:3.8 - 5.2 28-135mm. A lens so I assume the only requirement is that you have to manually focus.
Sigma 28-135mm 1:3.8-5.6 Macro MF IF Lens Reviews - Sigma Lenses - Pentax Lens Review Database a later model?

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