Web Analytics RiceHigh's Pentax Blog: True Round Diaphragm Pentax Lens!

Tuesday, December 20, 2011

True Round Diaphragm Pentax Lens!

This must be the true round diaphragm Pentax lens ever! See:-



Via: http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=40088160

It has even two more blades for what I saw and reported for the last time:-

http://ricehigh.blogspot.com/2010/11/round-lens-diaphragm-see-this-o.html

Wonderful! The bokeh of this Takumar must be good! And, Pentax wins (won actually) other once again, eventually! ;-D
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Spotmatic's avatar

Spotmatic · 690 weeks ago

Just so you know, Rice: the future will be round again. Like Mr. Kitazawa already mentioned in his already famous interview this will probably be made in the form of liquid crystal apertures, so no more moving parts. Also the edge of such a LCD aperture can be made in the form of a gradient from clear to black, theoretically making a Gaussian blur in the bokeh possible (doing away with the harsh outlining in some circumstances).

It can only get better ;)
1 reply · active 690 weeks ago
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RiceHigh 110p · 690 weeks ago

I am afraid that those things are mostly impractical and his thinkings are unrealistic before technologies of those become mature, but not in the foreseeable near future! :-o
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Jim Purcell · 690 weeks ago

What a sweet lens. Thanks for sharing this.
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Andreas · 690 weeks ago

Hi RiceHigh,
great that this photo serves you. However, since it is mine and I actually has all rights for it reserved
I'd appreciate if you would give credit to me and link back to my flickr page: http://www.flickr.com/photos/kuuan/5296475055/in/...
btw. I have two copies of this lens, one copy in excellent condition is for sale
1 reply · active 689 weeks ago
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Andreas · 689 weeks ago

oh, and this photo shows even better how round the aperture remains, even when stopped down: http://farm7.staticflickr.com/6218/6222070450_186...

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