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06-11-2010, 06:11 AM   #1
JohnBee's Avatar

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Jupiter 37AM w/1.7X AF TC(230mm) testing

I've been messing with the Pentax AF 1.7X TC on some older lenses and some combinations are proving to be quite interesting. Such as the case with the infamous MC Jupiter 137AM 135mm lens. And I was pleasantly surprised to find that it retained it's bokeh despite being coupled with a TC. Though more interesting is the low CA output and detail retention it provides overall(really nice).


Scruffy little birds... - click to view full size

A crop of the crop - click to view full size

The end...

09-23-2010, 11:03 PM   #2
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Location: Southern Alberta
Posts: 8
It seems hit-and-miss when it comes to using a TC with certain lenses... some become worse, and some just shine through.

Manually focused with my Jupiter 21-M 200mm f4 with a Tamron FA 2x tele-converter.
ISO400, f10 (on aperture ring, actually f20? because of tele-converter), 2 seconds.
Image posted straight out of camera. Colour is as captured.
The ship was a little over 2km away, as measured on Google Earth.

100% crop

09-24-2010, 05:46 AM   #3
JohnBee's Avatar

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Original Poster
Looks great!
A little sharpening/deblurring and you're right up there with the best of them.

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