Should I buy a Pentax-A SMC 50mm F1.2 Lens?


bjolester

Link Posted 20/04/2018 - 09:08
Algernon wrote:
There's no difference between the Pentax 1.2's K or A. The Tomioka 55mm f/1.2 is about the bestest

http://flickriver.com/search/tomioka+55mm+f%252F1.2/

Most of the stuff we've seen is on APS-C ..... FF should be more interesting.

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The K50/1.2 has 8 diapraghm blades, the A50/1.2 has 9 diapraghm blades (and the “A” setting).

The Tomioka seems like a great lens, do you own one?

Yes, it would be nice to see more shots taken with the Pentax 50/1.2 lenses on the K-1.
Bjørn

PPG
Flickr

Algernon

Link Posted 20/04/2018 - 10:03
I didn't know about the diaphragm blades, but they are usually used wide open so it doesn't make that much difference. It might at about f/4 - f/5.6

Yes I've got a Tomioka. It's a proper one with Tomioka on the beauty ring. What makes the bokeh so special is that being an M42 lens they had to grind away some of the rear element to work with M42 bodies see this pic (found on flickr not my photo)
https://www.flickr.com/photos/oldstan-on-flikr/4953772497

I've also got the Pentax K and another K mount f/1.2... Porst (I think).

All the flickr photos tagged... tomioka55mmf12
https://www.flickr.com/photos/tags/tomioka55mmf12

The photo of the keyboard and lenses on this site shows the difference between f/1.2 and f/1.4, but the f/1.4 is a Chinon which has much better bokeh than Pentax lenses. It could also have been made by Tomioka being M42.

https://pucci-studio.blogspot.co.uk/2015/01/auto-chinon-55mm-f12f14-m42.html
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Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Last Edited by Algernon on 20/04/2018 - 10:23

LennyBloke

Link Posted 20/04/2018 - 10:21
Here's a couple of "test" shots with the K50/1.2....

1. at f1.2:



2. at f5.6:



and this is with the Porst 55/1.2:

3. at f1.2:



Click on them to get a larger image.

These are literally snaps taken a few minutes ago - no PP (default LR sharpening removed). Handheld and optical viewfinder focused.

I'll put a couple of garden snaps up when I get a minute
LennyBloke

LennyBloke

Link Posted 20/04/2018 - 10:34
at f1.2 and no PP:


LennyBloke

LennyBloke

Link Posted 20/04/2018 - 11:01
last one...




at f1.2 - some PP (exposure, shadows and highlights) but no sharpening or the like
LennyBloke

bjolester

Link Posted 20/04/2018 - 11:39
Thank you for supplying images with the K-1 LennyBloke! "A picture is worth a thousand words", or so they say Anyway, it seems that sharpness at f1.2 on the K-1 is quite good, and the background blur, especially in the flower shot, is very nice.
Bjørn

PPG
Flickr
Last Edited by bjolester on 20/04/2018 - 11:40

bjolester

Link Posted 20/04/2018 - 12:29
Two shots with the A50/1.2 fitted on the Pentax K-5. I believe that catch-in-focus was used, but still it is hard to nail focus. I guess it is due time to do some more practicing with the A50/1.2

f1.2


Scilla
by bjolester, on Flickr

f1.2


Maria Nøkleblom
by bjolester, on Flickr
Bjørn

PPG
Flickr
Last Edited by bjolester on 20/04/2018 - 12:34

Algernon

Link Posted 20/04/2018 - 12:51
For wide aperture lenses the Canon Ee-S Super Precision focusing screen is a big improvement. Unfortunately you have to cut it down yourself

52 page thread

https://www.pentaxforums.com/forums/115-pentax-k-5/142241-best-screen-ever-manua...

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Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi

Horst

Link Posted 25/04/2018 - 00:36
Well, you guys convinced me. I did order the Pentax-A 1.2 from Japan. Now the waiting starts.
At least Japan Post is very reliable and reasonable fast.
I have bought lenses from Japan before and they have always been first class.
It cost me about $A750.-. There is no import duty under $A1000.- Which makes it worth while.

Thank you for all your interesting comments.

Regards, Horst

bjolester

Link Posted 25/04/2018 - 14:49
Horst wrote:
Well, you guys convinced me. I did order the Pentax-A 1.2 from Japan. Now the waiting starts.
At least Japan Post is very reliable and reasonable fast.
I have bought lenses from Japan before and they have always been first class.
It cost me about $A750.-. There is no import duty under $A1000.- Which makes it worth while.

Thank you for all your interesting comments.

Regards, Horst

I paid €450 for mine in 2013 from the Leica Shop in Austria, and I had to pay import fees. All in all a lot of money, but these lenses are not easily found, so absolutely worth every penny (Norwegian Kroner). I cannot believe I have ever seen the A50/1.2 for sale here in Norway btw.

I am looking forward to seeing images from the lens!
Bjørn

PPG
Flickr
Last Edited by bjolester on 25/04/2018 - 14:50

HarisF1

Link Posted 25/04/2018 - 17:33
I sold the mintyest copy ever for £400 - one of my biggest regrets. Only did it because loads of them came up on eBay so they seemed more common than they are.

robbiec

Link Posted 25/04/2018 - 21:59
A lot of the ebay ones have been butchered by Canon fiends, they chop down the aperture lever
My Gallery

Horst

Link Posted 01/05/2018 - 13:19
It has arrived. I received the lens yesterday. It is in prestine condition.
While I was waiting, I did some practice shots with my A-50mm f1.4 to lern about shooting wide open.
This helped a lot.
When the lens arrived, I went in to my backyard and made some test exposures. I found it easier to focus at f1.2 than at f1.4.
Here are some samples:













On this one I focused on the tree and not on the leaves.



This is really a great lens. It feels good too.

Regards, Horst

Algernon

Link Posted 01/05/2018 - 13:47
Yes it certainly has that f/1.2 magic about it
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi

pschlute

Link Posted 01/05/2018 - 17:02
You made the right decision. This is a classic case of if you can afford it, get t. Life is far too short not to. There is a dreaminess about the 1.2 bokeh that is rarely matched even by a 1.4 (maybe I am exaggerating !)

And what a lens it is !. Compared to the 1.4 it is massive and heavy. if you dont take care you can get vertigo looking through it off the camera, it feels like it wants to drag you into that vast space of glass.....oops , maybe too many glasses of Gamay, I will shut up now.
Peter



My Flickr page
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