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Archive 2017 · Speedboosting

  
 
ZoneV
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p.1 #1 · p.1 #1 · Speedboosting


I like small depth of field, I like special bokeh, I like much blur.

But the lenses I can afford donīt fullfill all my dreams!
So I started some years ago experiments with homemade speedbooster (here: combination of two positive lenses).

Hirsch by Markus, auf Flickr

Super Fast Lens by Markus, auf Flickr

After I bought the Sony A7II I got more and more posibillities - I could for example focus my lenses up to infinity.

These are made with something about 150mm f/1.2 - a bit of Aero Ektar effect:
NSFW: https://flic.kr/p/MXEPUX
NSFW: https://flic.kr/p/MQe1Mt

And now with the Kipon medium format speedbooster and a bit of modification I again got some pleasent results. Bokeh is more on the neutral side, but this helps to get more sharpness.

These two are made with the Canon Fd 400mm f/2.8L - now 280mm f/2.0 on fullframe:

DSC07507 by Markus, auf Flickr

Is My Hair OK? by Markus, auf Flickr

I love my FD 400mm f/2.8L lens for this, but have some other lenses like the Diaplan 100mm/2.8 (Trioplan sister) or episcope lenses as front lenses as well.
At first sight it seems one of my DIY speedbooster gives nearly the same results as the Kipon medium format speedbooster on this less demanding 0.7 factor. For my DIY lenses I often use ~0.5 or even 0.3 as factor for the resulting focal lengths.




Feb 21, 2017 at 06:24 PM
bluloo
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p.1 #2 · p.1 #2 · Speedboosting


Very cool. Would make for an excellent DIY write-up/read.

Nice work.



Feb 21, 2017 at 08:19 PM
ZoneV
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p.1 #3 · p.1 #3 · Speedboosting


Thank you!
Yes, probably have to do this. Up to now I have not made images from the lens parts.

Hamburg City Old "Speicherstadt" by Markus, auf Flickr



Feb 23, 2017 at 04:50 PM
ZoneV
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p.1 #4 · p.1 #4 · Speedboosting


Another one from the speedboosted Canon FD 400mm f/2.8L

Lady Long Legs by Markus, auf Flickr



Mar 07, 2017 at 06:00 PM
dumplinknet
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p.1 #5 · p.1 #5 · Speedboosting


Zone, this is beautiful! I love it! Can you show me a picture off your setup? I'm so interested!


Mar 08, 2017 at 07:52 PM
ZoneV
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p.1 #6 · p.1 #6 · Speedboosting


dumplinknet wrote:
Zone, this is beautiful! I love it! Can you show me a picture off your setup? I'm so interested!


Thank you!
Here the FD 400 + Kipon Speedbooster back:

Lens Modification with Lensbooster by Markus, auf Flickr

Here an result of Canon FD 300mm f/2.8L + Kipon 0.7x Medium Format Speedbooster + Sony A7II + a bit of tinkering:

Dark and Blue by Markus, auf Flickr



Apr 06, 2017 at 03:02 PM
ZoneV
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p.1 #7 · p.1 #7 · Speedboosting


Now a mirror lens on speed: Russian Rubinar 500mm f/5.6 with the Kipon speedbooster - now a 350mm f/4.0 mirror lens with characteristic bokeh:

Cherry Blossoms by Markus, auf Flickr



Apr 09, 2017 at 03:33 PM





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