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It's HUGE! - Porst 135/1.8
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PostPosted: Fri Jan 15, 2010 10:12 pm    Post subject: It's HUGE! - Porst 135/1.8 Reply with quote

Today the Porst 135 f/1.8 arrived which I had recently bought from a forum member. My first impressions were WOW, what a piece of glass!

First experiences were quite alright and wide open it performs just about what was expected. Lots of CA and softness but no wonder with such opening! But I tried it a low light situation and there it really shines.

However it is quite a hard one to use when you have to stop it down a few. The shutter time together with the lack of stabilization makes it tricky, any tips on this?

Here's some photo's of the lens itself. I'd rate it R for the huge exposure Rolling Eyes










PostPosted: Fri Jan 15, 2010 10:19 pm    Post subject: Reply with quote

That's certainly a nice lens! I had one but I had to return it to the seller as the front element was full of scratches. I will find another one someday...

As for your stabilization problem: that's why they invented Pentax. Stabilization with ALL lenses, even manual ones (and also focus confirmation with ALL lenses).


PostPosted: Fri Jan 15, 2010 10:21 pm    Post subject: Reply with quote

I am aware of the Pentax stabilization indeed! 'Sadly' when I bought my DSLR, I never thought or knew about re-mounting old lenses with adapters and such. Who knows if I ever see a nice Pentax DSLR fly by in a bargain I might go for one, for now this will do. I'm just a student afterall Rolling Eyes .


PostPosted: Sat Jan 16, 2010 11:06 am    Post subject: Reply with quote

congrats! i also have this lens and i recommend to use a lens hood with this one.


PostPosted: Sat Jan 16, 2010 11:34 am    Post subject: Reply with quote

Hi,

nice to hear that you like it! So the shipping went well!

Tried the lens hood?


PostPosted: Sat Jan 16, 2010 1:25 pm    Post subject: Reply with quote

Keep the shutter speed at or above `focal length x crop factor'. Around 1/250 may do it depending on your ability to hand hold.

Otherwise invest in a monopod. I don't like IS as it seems to me an excuse to avoid correct technique.


PostPosted: Sat Jan 16, 2010 1:33 pm    Post subject: Reply with quote

i have a porst, that i think was cosina made, a 35-105mm that is like a tank! i love the rendition of the images on it though, quite unique. do you find the same?


PostPosted: Sat Jan 16, 2010 3:58 pm    Post subject: Reply with quote

I assumed that the lens isn't the sharpest 135 mm, but I like it a lot.

I love the potential of the 1,8 aperture in the 135 mm focal. In low light (for what the F/1,8 is) must be very nice to use. Another to my list, someday....

Congratulations!! Rino.


PostPosted: Sat Jan 16, 2010 6:25 pm    Post subject: Reply with quote

Karhallarn wrote:
Hi,

nice to hear that you like it! So the shipping went well!

Tried the lens hood?


I have Very Happy. Makes it even bigger Rolling Eyes .

martinsmith99 wrote:
Keep the shutter speed at or above `focal length x crop factor'. Around 1/250 may do it depending on your ability to hand hold.

Otherwise invest in a monopod. I don't like IS as it seems to me an excuse to avoid correct technique.


I'll try to keep that in mind, thanks for this!


PostPosted: Sat Jan 16, 2010 9:59 pm    Post subject: Reply with quote

I once had this lens myself and compared it with some Pentax 135mm lenses.
For the 1.8 isn't really that sharp you have to stop it down to 2.8 to get it really sharp (that is conformed by an old 135m-lens-test of the german ColorFoto about 1980: At 2.8 really sharp as the rest of the bunch, the fall-off to corners isn't visible with crop-dslr).
BUT:
Because the Pentax 2.5/135 and 2.8/135 are better in sharpness and contrast, I sold it again.
If you really need the 1.8 (for concerts, theatre ...) it is better to have it than not to get a sharp shot.
BUT:
If you have a camera with good low-light-performnace and/or image stabilizer (Olympus, Pentax, Sony) you can get the same resuluts with the more lightweight and more compact 2.x-lenses.

I found the Pentax K 2.5/135 to be the best compromise (yes: The Pentax A* 1.8/135 was a bit better at 2.8, but not that much...).

For a cheaper and nontheless very good 135mm I recommend a Pentacon MC 2.8/135 or the russian 3.5/135 (lovely bokeh...)


PostPosted: Sat Jan 16, 2010 10:40 pm    Post subject: Reply with quote

I really want one of these!


PostPosted: Tue Jan 19, 2010 11:03 pm    Post subject: Reply with quote

I have a Porst 135 / 1.8 too.
My lens has a big (~40 mm) scratch on the front lens, and I think it was the last lens where a fungus lived inside. That one I removed without traces.

Without a big hood the quality is very bad! I use a adapted hood of a Zeiss 180/2.8 medium format lens.
With hood I got some nice shots @ 1.8 in low light locations, great bokeh. Furthermore I got some nice pictures at 1.8 from some leaves with the sun shining through.
All with a EOS 5D, i think for smaller pixel the sharpness would not be enough - for 100% viewing.


PostPosted: Tue Jan 26, 2010 7:44 pm    Post subject: Reply with quote

Some photos from my Porst 135/1.8 with EOS 5D, fully open @1.8




PostPosted: Tue Jan 26, 2010 8:02 pm    Post subject: Reply with quote

Looks good!What a DoF...


PostPosted: Tue Jan 26, 2010 8:32 pm    Post subject: Reply with quote

I had one. This is one of the lenses where the idea goes behind feasibility. I do not know any other lens that is so much prone to halos and koma.


PostPosted: Tue Jan 26, 2010 8:33 pm    Post subject: Reply with quote

#1 is great.

I have got a silimar lens Sigma XQ 1,8/135 for sale in the marketplace section.


PostPosted: Tue Jan 26, 2010 9:07 pm    Post subject: Reply with quote

I have this lens in the Accura / Mitake brand - it's a real weapon Smile


PostPosted: Tue Jan 26, 2010 9:09 pm    Post subject: Reply with quote

mflex-on wrote:
I had one. This is one of the lenses where the idea goes behind feasibility. I do not know any other lens that is so much prone to halos and koma.

I agree... it is heavy, it's difficult to focus precisely, the lens has tons of CA, halos, maybe the design shows all currently known optical aberrations (maybe it has even the currently unknown ones Laughing ), but it simply WORKS




And that's the reason why I keep my copy Smile


PostPosted: Tue Jan 26, 2010 9:16 pm    Post subject: Reply with quote

Furthermore my lens was even cheaper than the Canon FD 135/2.0 today. I dont remember the price I payed for that lens, but in those times I didnt spent that much on photo equipment with dubious quality, and that scratch on the front lens was an good point to deal on the flea market.


PostPosted: Mon Apr 12, 2010 1:58 pm    Post subject: Reply with quote

hello

i have buy the carbonR's beroflex 135/1.8 witch is exactly the same as samigon listed here http://www.pbase.com/pganzel/samigon_135mm_f18_on_maxxum_7d
same color ,exact copy

but ,after a lot of search on the web ,i find ,in an asian forum ,there s different optical shemes
sigma YS has it s own design 6/5
after there s the soligor type ,this is the one dismantle by P Ganzel whith the big triplet .it s a 5/3
certainly same optical sheme under different names
and the 3rd version ,the spiratone ,whit 6/4 optical design

all of them are sonnar type i think

mine ,when i look trought whith a light source seems to be very similar with the spiratone first a doublet and after a single element



it will be interesting to know who have best quality/resolution ,and who made what


PostPosted: Mon Apr 12, 2010 2:09 pm    Post subject: Reply with quote

Beautiful sample Jiri!


PostPosted: Mon Apr 12, 2010 2:34 pm    Post subject: Reply with quote

Attila: Thanks!

AMDBill: Nice find. Thank you.

True (or typical) Sonnar is the one in the Ganzels drawing. The other two are heavily modified Ernostars (the Sigma has slight gaussian touch).

I took my Spiratone, flashlight and... voila, we have 4th 135/1.8 design in list...

My Spiratone isn't like the pictured one, I have the older model, which has different look, is native M42, doesn't state "Auto" word in it's name, but:

"1:1.8 f=135mm No.532xxx lens made in Japan SPIRATONE PLURA-COAT By Mitake"

this one has 3 elements in front group (none is cemented) and rear group consists of cemented doublet... seems to be Ernostar with rear element replaced by cemented doublet... something like:


http://kmp.bdimitrov.de/


PostPosted: Mon Apr 12, 2010 2:38 pm    Post subject: Reply with quote

AMDBill wrote:
hello

i have buy the carbonR's beroflex 135/1.8 witch is exactly the same as samigon listed here http://www.pbase.com/pganzel/samigon_135mm_f18_on_maxxum_7d
same color ,exact copy

but ,after a lot of search on the web ,i find ,in an asian forum ,there s different optical shemes
sigma YS has it s own design 6/5
after there s the soligor type ,this is the one dismantle by P Ganzel whith the big triplet .it s a 5/3
certainly same optical sheme under different names
and the 3rd version ,the spiratone ,whit 6/4 optical design

all of them are sonnar type i think

mine ,when i look trought whith a light source seems to be very similar with the spiratone first a doublet and after a single element



it will be interesting to know who have best quality/resolution ,and who made what


I like this post very much.

I saw a soligor (very old from the 60's) and perhaps it's a sonnar type lens, like you say.

Excelent to know the performance of the three and who made which.

Thanks to share your interest.

Rino.


PostPosted: Mon Apr 12, 2010 3:31 pm    Post subject: Reply with quote

I owned one under a different brand name a couple of decades ago. It was impressive in size and weight, but it was rather soft wide open. At about this same time, I acquired one of Vivitar's legendary 135mm f/1.5 "Professional" lenses. Talk about soft wide open! Anyway, I didn't see much use to keep the 135/1.8 when I had the Vivitar monster so I sold it.

There's a fellow on Flickr who has a Spiratone 135mm f/1.8, and who's taken a bunch of shots with it and his 5D. Here's his '135mm' set:

http://www.flickr.com/photos/mattbenn8/tags/135mm/

It'll give you a pretty good idea what the capabilities of the lens are. Me, I think it works better with a DSLR than it did with the old film cameras I used mine on -- if mine was even the same optical formula of the Spiratone, which it may not have been.


Last edited by cooltouch on Mon Apr 12, 2010 3:33 pm; edited 1 time in total


PostPosted: Mon Apr 12, 2010 3:32 pm    Post subject: Reply with quote

@ No-X can you post a pic of youre's ?

i m pleased to know mine is a ernostar modified

@estudleon : thank s a lot