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Archive 2011 · Build your own apodization lens - like Sony 135 STF

ZoneV
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p.2 #1 · p.2 #1 · Build your own apodization lens - like Sony 135 STF

Made some first tests with a quick modified Non-Alternativ Canon EF 50/1,8 and my other three lenses with the not that smooth filters.
On the camera display the images looks promissing. And probably the effect of the not very dark transmission of the silde film appears - the bright highlights looks ~ nearly normal, but the details with not that much intensitys looks softer.

But as said, these tests are without comparison images and only viewed on the camera display.

Sep 05, 2011 at 06:20 AM

ZoneV
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p.2 #2 · p.2 #2 · Build your own apodization lens - like Sony 135 STF

I have some new things on my bokeh apodization site:
Testimage with a Tokina RMC 28mm/2.8


	http://www.4photos.de/camera-diy/Weitwinkel-Apodisation-.jpg

And there is some lens data: Which lenses are simple to get this filter inside - and which iris diameter has that lens.

Just by change I found that I own a second copy of that Tokina 28 mm lens, and now plan to make comparison images - but the weather is bad.

Sep 13, 2011 at 11:03 AM

ZoneV
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p.2 #3 · p.2 #3 · Build your own apodization lens - like Sony 135 STF

It seems that when using apodisation filters, even bushes in the background could become acceptable images:


	http://www.4photos.de/camera-diy/Bokeh-Test.jpg

But I hate the light loss due to this filter - in combination with our dark weather :-/

Sep 26, 2011 at 03:58 PM

wickerprints
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p.2 #4 · p.2 #4 · Build your own apodization lens - like Sony 135 STF

I really like the fact that you're playing with this technique on short focal length lenses. It's very promising!

Sep 26, 2011 at 04:01 PM

ZoneV
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p.2 #5 · p.2 #5 · Build your own apodization lens - like Sony 135 STF

wickerprints wrote:
I really like the fact that you're playing with this technique on short focal length lenses. It's very promising!

I would like to test it with much more lenses - and fast lenses.
But at them moment I have not enough motivation to work me through my Canon FD 24/1.4L, FD 85/1.2L, Zeiss 85/1.4 (C/Y), Jupiter 85/2.0, Porst 135/1.8 to get access to the iris :-/
They have all a more complex setup.
But I think I have to decide, which of those lenses I need to open :-/

Sep 26, 2011 at 04:28 PM

Aaron D
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p.2 #6 · p.2 #6 · Build your own apodization lens - like Sony 135 STF

Markus,

Your tinkering and modifications are always inspiring to me! This is something I may just try on my Yashica...should I get motivated and brave enough to try it.

Well done, keep up the good work!

Sep 26, 2011 at 05:04 PM

nixland
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p.2 #7 · p.2 #7 · Build your own apodization lens - like Sony 135 STF

ZoneV wrote:
I would like to test it with much more lenses - and fast lenses.
But at them moment I have not enough motivation to work me through my Canon FD 24/1.4L, FD 85/1.2L, Zeiss 85/1.4 (C/Y), Jupiter 85/2.0, Porst 135/1.8 to get access to the iris :-/
They have all a more complex setup.
But I think I have to decide, which of those lenses I need to open :-/

Woww ... that's a daring job ZoneV. Can't wait to see the result.

Sep 26, 2011 at 07:23 PM

Edgars Kalnins
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p.2 #8 · p.2 #8 · Build your own apodization lens - like Sony 135 STF

Very interesting

. I can see that a man who has so many lenses could be driven to modifications to find unusual results

Sep 26, 2011 at 07:41 PM

JimUe
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p.2 #9 · p.2 #9 · Build your own apodization lens - like Sony 135 STF

bravo for trying, it looks promising.

I've rented (bought & returned) the 135 STF for a week. The a-mount community hails it as the king of bokeh but i agree, like posts in this thread, cause the bokeh to be dizzy and artificial. e.g.

#1


	http://farm5.static.flickr.com/4138/4788605060_8456aecf9a_z.jpg


	http://farm5.static.flickr.com/4108/4848400938_a57781c1a9_z.jpg


	http://farm5.static.flickr.com/4095/4788085177_d9a8a24a80_z.jpg

However. The Minolta Maxxum 7 film body does have an "STF Mode" that essentially replicates the apodization filter on the 135 STF and this can be replicated in with digital PP. The STF Mode takes partial exposures at varying aperatures in the same film frame. This can be approximated by taking several shots at different aperatures and layering them in post with varying opacity. i.e.

#4


	http://farm3.static.flickr.com/2590/4088075485_65ecc64cbc_o.jpg

Sep 26, 2011 at 11:19 PM

ZoneV
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p.2 #10 · p.2 #10 · Build your own apodization lens - like Sony 135 STF

Yes, but for this exposure series you need non moving objects. Not possible with the tree and foilage thing (at least here in windy Hamburg).
The other easy way would be a moving iris during exposure. Camera manufacturers could implement this for exposure times equal and shorter x-sync. Or one could use central shutter lenses.

Sep 27, 2011 at 01:17 AM

ZoneV
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p.2 #11 · p.2 #11 · Build your own apodization lens - like Sony 135 STF

Edgars Kalnins wrote:
Very interesting

. I can see that a man who has so many lenses could be driven to modifications to find unusual results

It is not the number of lenses I have, that drives me to do that - they are not harmed in this apodization DIY job.

It is the realisation that most talk about "good bokeh" is about the quantity. And the quality differences - we talk here in the alternative lenses board about - are relative small.

I own and love the Meyer Trioplan with its soap bubble bokeh. And one of the better lenses in terms of smooth bokeh - the Minolta Rokkor 58/1.2. And some others. But their smooth bokeh is still not very smooth.
Because of this I started the search and tinkering.

Sometimes the lack of material urge me to think about tinkering. My unique system to have changable IR filters inside my EOS Rebel XT was started that I want the possibillity to make IR photos without the need for a tripod (that would be too much luggage for a walk with my small child and camera), but still need that camera as a backup system for my second Rebel XT for nude photgraphy.

Sep 27, 2011 at 01:36 AM

lovinglife
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p.2 #12 · p.2 #12 · Build your own apodization lens - like Sony 135 STF

zone V - Nice experiment and excellent pictures!

Oct 14, 2011 at 10:47 PM

xxxpisogaxxx
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p.2 #13 · p.2 #13 · Build your own apodization lens - like Sony 135 STF

Hello Zone V,
I'm very interested with your work here, it's awesome!!!
I have a question, if I make an apodization filter by your method and use it as a rear filter, will it produce the same effect?
I really want to try this on my samyang 85 1.4, but don't want to mess it up so bad

Jul 22, 2012 at 03:34 PM

FlyPenFly
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p.2 #14 · p.2 #14 · Build your own apodization lens - like Sony 135 STF

I don't understand the "dizzy" comments about the bokeh. It seems the opposite of that. If anything, it looks too clinical and perfect.

Jul 22, 2012 at 03:52 PM

ZoneV
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p.2 #15 · p.2 #15 · Build your own apodization lens - like Sony 135 STF

xxxpisogaxxx wrote:
...
I have a question, if I make an apodization filter by your method and use it as a rear filter, will it produce the same effect?
...

Thank you :-)
Behind the lens it will most likely produce vignetting - and probably less sharp image.
The place of the iris is a bit magic, you could not copy the effects of that position on other position to 100% - probably even not 10%.
You could put any obstacle in iris position in the light path - you will not see the form in the sharp image areas. But you see it in the bokeh, absolute sharp.
Behind the lens you most likely see it in the sharp areas too.

Jul 22, 2012 at 04:12 PM

ZoneV
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p.2 #16 · p.2 #16 · Build your own apodization lens - like Sony 135 STF

FlyPenFly wrote:
Can't argue with the awesomeness of your results.

FlyPenFly wrote:
I don't understand the "dizzy" comments about the bokeh. It seems the opposite of that. If anything, it looks too clinical and perfect.

The blurred background with an apodization lens is very special. I don´t like it on every image, either.
Sometimes I even like the Trioplan soap bubble bokeh :-)

Interesting new think about apodization is that Canon has patented two apodization lenses with variable apodization effect: http://www.canonrumors.com/2012/07/patent-ef-135-f2-8-180-f3-5-with-apodization-filter/

Jul 22, 2012 at 04:18 PM

Mescalamba
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p.2 #17 · p.2 #17 · Build your own apodization lens - like Sony 135 STF

Only problem with STF is that its "too good". In real life its pretty cool thing for certain types of product photography. Not much for anything else tho..

Yea and interesting thing, when you stop down that lens, its incredibly sharp...

Jul 22, 2012 at 05:06 PM

Bifurcator
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p.2 #18 · p.2 #18 · Build your own apodization lens - like Sony 135 STF

The Wiki page is interesting: http://en.wikipedia.org/wiki/Apodization and mentions Photon Sieves as sited in this article: http://optics.org/article/30113 which makes me wonder if exposing that to your slide film and using it in place of the gaussian blur gradient one wouldn't produce better results. Or perhaps less "dizzy" bokeh?

http://img.optics.org/archive/news/13/6/1/sievecentre.jpg

Jul 22, 2012 at 06:20 PM

ZoneV
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p.2 #19 · p.2 #19 · Build your own apodization lens - like Sony 135 STF

This structure looks like it could be seen better in the bokeh than the ~ Guassian kind of filter.

Jul 23, 2012 at 01:58 AM

carstenw
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p.2 #20 · p.2 #20 · Build your own apodization lens - like Sony 135 STF

I wonder what would happen if instead of little circles, you used another shape? Triangles for example

Jul 23, 2012 at 02:16 AM

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