Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: ben730 on January 18, 2018, 11:33:39 am

Title: Bokeh: 3 different aperture constructions....
Post by: ben730 on January 18, 2018, 11:33:39 am

Hi
I just tested three different shutters on my Rodie 90 HR-W to see the difference of the bokeh.

See the pictures:
4636.jpg: Linhof Synchro Compur, 5 blades
4637.jpg: Old Synchro Compur, 10 blades
4638.jpg: Copal 0, 7 blades

The oldest Synchro Compur with 10 aperture blades is the clear winner concerning bokeh for me.
All the expensive techcam Rodies and Schneiders, called the "best lenses" can't be bought with more than 7 aperture blades.
It's a shame.
The 5 bladed Linhof Synchro Compur shows the best contrast. The older Compur and the Copal seem to generate some internal reflections.
You can see this around the lamp (the big white spot in the background). The blades of the old Compur are not mate and grey.
Regards,
Ben

Title: Re: Bokeh: 3 different aperture constructions....
Post by: Garry Sarre on January 24, 2018, 05:59:08 pm

Thanks for taking the time to test and post this Ben. I like your work as well but what the hell is this? Haha. http://www.benhuggler.com/index.php?/products/

Title: Re: Bokeh: 3 different aperture constructions....
Post by: ben730 on January 24, 2018, 06:40:23 pm

Quote from: Garry Sarre on January 24, 2018, 05:59:08 pm

Thanks for taking the time to test and post this Ben. I like your work as well but what the hell is this? Haha. http://www.benhuggler.com/index.php?/products/

Thanks Garry :)
It's a GEBERIT Pluvia, a roof drainage system.

https://www.geberit.com.au/en/

Title: Re: Bokeh: 3 different aperture constructions....
Post by: BernardLanguillier on January 25, 2018, 01:05:50 am

Very interesting, thank you!

Cheers,
Bernard

Title: Re: Bokeh: 3 different aperture constructions....
Post by: Garry Sarre on January 25, 2018, 09:04:00 am

Quote from: ben730 on January 24, 2018, 06:40:23 pm

Thanks Garry :)
It's a GEBERIT Pluvia, a roof drainage system.

https://www.geberit.com.au/en/

Well, no bokeh on that one haha.

Title: Re: Bokeh: 3 different aperture constructions....
Post by: Herbc on January 25, 2018, 10:02:17 am

I just sold a Wollensak Beach 12 inch old time portrait lens that must have had more than ten aperture blades, although I did not try to count them. Big old and very heavy, but I expect a determined dude could mount it on whatever camera they happen to have. It was designed for 8x10.