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PORTRAGON 100mm 1:4 Japan
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PostPosted: Thu Apr 24, 2008 10:12 am    Post subject: PORTRAGON 100mm 1:4 Japan Reply with quote

Hallo, now I want complete my bottlebottom-series.

I got this lens beside a jena lens.
It looks like a part of a bigger lens, but it works.
Its only a tube without back lens, only one lens in the front.
This lens is a portrai-lens by using the lens-mistakes to get a soft picture, I believe.
It must be a supercheap lens without blind. Only a telescope tupe.
This is the opposition of an ultron.





a test picture - it works, but ......


this should be the end of the my serie "the bottlebottoms" ,
but in the next day comes a bag with differnt lenses, perhaps .....

regards Peter


PostPosted: Thu Apr 24, 2008 10:28 am    Post subject: Reply with quote

Hi Peter,
I am sure there is still a lot of bottlebottom on the bay
Better read reviews on this forum and stay away of those super cheap lens


PostPosted: Thu Apr 24, 2008 11:19 am    Post subject: Reply with quote

Bottlebottom ... In French , "Cul de Bouteille" ...Bottle's "ass" ! Embarassed This lens is Wonderful ! I could'nt reach that tremendous sum of defaults with any of my homebrew lenses collection . Even a simple meniscus from a kodak box give decent results !
here : kodak meniscus (approx 95mm focal length , f/9) on dslr.




I want a copy of this lens.... Mr. Green


PostPosted: Thu Apr 24, 2008 12:17 pm    Post subject: Reply with quote

Here is an example of production of the beer bottle bottom lens, sorry it is in finnish but seeing the pictures you got the main idea:
1 theory http://www.teknofokus.fi/Foto/Optplo/ppohjalns1.htm
2 grinding the lens http://www.teknofokus.fi/Foto/Optplo/ppohjalns2.htm
3 assembly http://www.teknofokus.fi/Foto/Optplo/ppohjalns3.htm
4 test pictures http://www.teknofokus.fi/Foto/Optplo/ppohjalns4.htm


PostPosted: Thu Apr 24, 2008 12:59 pm    Post subject: Reply with quote

The beerglasspictures are super! I am in the winepart of austria, I could take a winebottle, like Helios wrote.

This is my passion, now, to test all lenses, good or bad.
Perhaps, if you love this effect (CAs, blure), this lens is spectakulare.

Its like laterna magica. I will shoot another pics -

see you later

Peter


PostPosted: Thu Apr 24, 2008 3:28 pm    Post subject: Reply with quote

kansalliskala wrote:
Here is an example of production of the beer bottle bottom lens, sorry it is in finnish but seeing the pictures you got the main idea:
1 theory http://www.teknofokus.fi/Foto/Optplo/ppohjalns1.htm
2 grinding the lens http://www.teknofokus.fi/Foto/Optplo/ppohjalns2.htm
3 assembly http://www.teknofokus.fi/Foto/Optplo/ppohjalns3.htm
4 test pictures http://www.teknofokus.fi/Foto/Optplo/ppohjalns4.htm


Now this is amazing!

@Peter, nice that you have found a new field to play in. Wink


PostPosted: Thu Apr 24, 2008 3:49 pm    Post subject: Reply with quote

I found a lot about this lens in the web.
Its serious, a kind of art, the center is soft and the borders are blurred.
Its an analog lens for friendly pictures (skin-friendly)

www.pbase.com/dang/image/72011276&exif=Y

With regards Peter


PostPosted: Fri Apr 25, 2008 7:37 am    Post subject: Reply with quote

I tested the lens on my childs


It was an "anolog mini diffusor".

regards Peter


PostPosted: Fri Apr 25, 2008 9:55 am    Post subject: Reply with quote

Thanks for posting the pictures, Peter.

I am very fond of soft focus lenses and I am collecting them. Personally, I find these "monocle" lenses like the Portragon to be the least interesting type of soft focus lenses. The soft focus effect is too obvious and lacks delicacy. These lenses also tend to exhibit ubiquitous color fringes, but the results can be pleasant in black and white. As the Portragon as no diaphragm, the lens cannot be stopped down to lessen the effect.

Cheers!

Abbazz


PostPosted: Fri Apr 25, 2008 11:25 am    Post subject: Reply with quote

These is one of the worst lens what I ever seen , perhaps a pin hole lens cap produce better quality. Thanks for sharing!


PostPosted: Fri Apr 25, 2008 12:15 pm    Post subject: Reply with quote

Mmm.. reminds me of my ex-EF135 f2.8 SF lens with soft focus switch on to level 2. I get dizzy looking at OOF images Crying or Very sad I sold the damn lens.


PostPosted: Mon Oct 23, 2017 1:34 pm    Post subject: Reply with quote

Hi, I know the thread is rather old.
But I want to say, I like such lenses.
I do not think that it is low quality but it gives a dreamy feeling to the pictures.
I try to get one. Nevertheless I build such monocle lenses myself, and I like the results.
Especially the children photos you posted look phantastically.
Thanks for showing.

I have the Sima lens which is similar, but allows to use stops.


PostPosted: Mon Oct 23, 2017 7:44 pm    Post subject: Reply with quote

Indeed this is interesting. I suggest playing with old zooms by removing or reversing one or more elements. It is the cheapest way with most possibilities. Like Photo Lego-land.


PostPosted: Tue Oct 24, 2017 11:07 am    Post subject: Reply with quote

Any lens will produce crap like that if it's not focussed properly.


PostPosted: Wed Nov 01, 2017 7:27 pm    Post subject: Reply with quote

I have one of these and it is terrible, but I could see its usefulness for portraits. I've used it a bit, mostly with a custom stop made out of cardboard. It's still terrible stopped down. Fortunately I paid less than $5 for it.


PostPosted: Thu Dec 07, 2017 3:11 pm    Post subject: Reply with quote

Hi, I know it is an old thread.
But I got my portragon just this week. Compared to the Sima 2,0/100 it is much smaller, but it does not have the same macro capabilities without using extra macro rings.

It gives nice soft pictures.
I added a kitchen sink sieve stop to influence the bokeh. By the way, you can add stops in front of the lense. This is not designed but rather easy.

Christmas star by Bernd Hutschenreuther, auf Flickr
without stop

Mini-Aster by Bernd Hutschenreuther, auf Flickr
nearest distance

Cactus by Bernd Hutschenreuther, auf Flickr
with kitchen sink sieve stop