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Thread: Fun with the Noktax (50/1.2)

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    Fun with the Noktax (50/1.2)

    Just acquired this all manual lens and thought it appropriate to name it Noktax ...
    Sorry, I have no cat nor dog, but here are some of the first results @f/1.2 !






    WB slightly off

    Closest focus distance (0,45 mtr). Pretty good, no ?

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Very nice bokeh. Is this the 50mm f/1.2 Takumar?

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by tsjanik View Post
    Very nice bokeh. Is this the 50mm f/1.2 Takumar?
    Tom,

    it only reads: ASAHI OPT. CO. JAPAN SMC PENTAX 1:1.2 50mm

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Newest incarnation of the same lens - but still 30 years old! You are fortunate to find that lens, it's rather rare. The old manual focus Pentax lenses are wondeful and a great bargain.
    Here are some taken with your lens' poor cousin, the f/1.4

    Tom


    _IGP0166 by tsjanik47, on Flickr




    _IGP0179 by tsjanik47, on Flickr

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    Re: Fun with the Noktax (50/1.2)

    Tom, these are looking good, even by a poor cousin's standard ... 😜
    Obviously the jury is still out whether my 50/1.2 is any good at all.
    It came with front and rear caps only (no box), but it's almost mint as far as I can see.
    Bought the hood separately.

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    I'm sure you will enjoy the lens. Here are some comments you may find of interest:

    SMC Pentax 50mm F1.2 Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database

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    Re: Fun with the Noktax (50/1.2)

    Yup that's the lens alright. Thanks for the link, Tom. I'll have a look and hopefully its characteristics are not too bad.
    What I've read before purchasing it should be okay though.
    There are three versions with the same optics formula, only the last iteration has this A(uto-aperture) feature and different coating.

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Hi,

    I've shot Pentax for over 35 years and virtually all of the Takumars (including the last of the screw mounts, the SMC Takumars) and their near identical SMC Pentax K mount lenses were/are splended. Later on as the K mount lenses continued in their development, new optical formulas were developed for SMC K mount pentax lenses that had no screw mount counterparts. The 50mm f1.2 is one of them, as there was no screw mount Takumars faster than f1.4. Although somewhat soft wide open, the 50mm f1.2 is still highly sort after and an extremely nice lens. Some lovely images posted above!

    Dave (D&A)
    Last edited by D&A; 13th March 2012 at 21:52.

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    Re: Fun with the Noktax (50/1.2)

    Hi Dave,

    thanks for this interesting background information, much appreciated !

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Something odd with this lens. When it's fully locked in the camera mount, the aperture remains wide open at f/1.2 no matter how I turn the ring.
    Unlocking it and turning the lens 10 degrees or so makes the aperture ring fully operational.
    For a manual lens I'm surprised to find this little lever at the back of the lens that actually operates the aperture.
    The lever somehow must hit something inside the housing of the camera.

    Anyhow, nothing better than the zoo to try out a 'new' lens, no exception this time ...
    And nothing fancy of course.













    Last edited by Knorp; 17th March 2012 at 02:36.
    Bart ...
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    Re: Fun with the Noktax (50/1.2)

    WOW, fabulous Bart, you've got a winner there. The lever and behavior is normal. If you push the green button to measure exposure you will see the lens stop down, or push the DOF preview on the power switch and of course when an exposure is made. There is a small arm inside the body on the left side as you face the camera. I really like the last shot; you obviously have no trouble with the manual focusing.

    Tom

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    Re: Fun with the Noktax (50/1.2)

    Fabulous, Bart!

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    Re: Fun with the Noktax (50/1.2)

    Bart,

    Stunning images, all of them. The last one beyond believe, that good!

    Thanks, K-H.

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by tsjanik View Post
    WOW, fabulous Bart, you've got a winner there. The lever and behavior is normal. If you push the green button to measure exposure you will see the lens stop down, or push the DOF preview on the power switch and of course when an exposure is made. There is a small arm inside the body on the left side as you face the camera. I really like the last shot; you obviously have no trouble with the manual focusing.

    Tom
    Mmm, seems I missed all bells&whistles of this nifty camera or dSLRs in general for that matter .
    I suppose we M-users still live in the Dark Ages.
    Or is it just me ...

    But seriously, the DOF preview works indeed (in M-mode) with this manual lens too.
    And the image is made with the chosen aperture value.
    So far so good.

    But I like to set aperture and leave the shutter speed to the electronics.
    So right then: why doesn't my camera engage aperture adjustment when in Av-mode ?
    Also the DOF preview is not working.
    Beats me ...

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by Knorp View Post
    ..........But I like to set aperture and leave the shutter speed to the electronics.
    So right then: why doesn't my camera engage aperture adjustment when in Av-mode ?
    Also the DOF preview is not working.
    Beats me ...

    Kind regards.
    By setting the aperture ring and using the green button in M mode you are de facto in Av mode. Pentax cameras from the era of your lens had a mechanical coupling to transmit aperature information. The mechanical coupling is absent in their DSLRs.

    Please post more shots from that lens

    Regards,


    Tom

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by tsjanik View Post
    By setting the aperture ring and using the green button in M mode you are de facto in Av mode. Pentax cameras from the era of your lens had a mechanical coupling to transmit aperature information. The mechanical coupling is absent in their DSLRs.
    Thanks Tom, but there IS a mechanical coupling !
    In M-mode the selected (manual) aperture is selected and used.
    You can actually hear the coupling doing its work and the photo has more DOF as expected.

    But why can't this all work in Av-mode, I wonder ?
    I mean everything is there ! What am I missing ?

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Doing some more reading, it's now clear to me, though not the technical aspect, this lens is not going to work stopped down with automatic shutter speed in Av-mode.
    Although I've read a bit of tape will get you the first three stops, but why bother if its main purpose and attraction is to be shot wide open, right ?
    So therefore I'll stop asking questions and better start shooting now.

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Bart: all the hanky-panky and monkeying around with the lens aside, the zoo pictures, especially the last one are terrific.It ain't the lens that made the difference in these pics, it was a damn good photographer!

    Roy Benson

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    Re: Fun with the Noktax (50/1.2)

    Although I'm used to handle fast glass, I'm surprised to find it quite difficult to get consistent focus with this lens.
    Here's my dad patiently posing

    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Walking through rainy Amsterdam.
    Again I found myself flabbergasted by the inconsistent focus hit rate.
    I'll setup my LensAlign Pro some time soon for some serious testing.









    Bart ...
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    Re: Fun with the Noktax (50/1.2)

    These are stunning, Bart. Fantastic demonstration of this lens...it'll be sure to drive up the lens lust

    Best,
    Ashwin
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    Re: Fun with the Noktax (50/1.2)

    Exactly Ash and that's why I have to ask for some more shots, focused on objects about 2-3m away at f1.2.
    Thinking about getting it for a portrait set-up.

    The macro stuff looks awesome too, but that won't be my primary field of use.
    My Flickr

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    Re: Fun with the Noktax (50/1.2)

    Just Wow!

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    Re: Fun with the Noktax (50/1.2)

    Not much in the 2-3 mtr range here, I'm afraid.
    Here a few of the this time of the year 'obligatory' cherry blossom shots.
    First two @ f/1.2 , last @ f/2.8 (probably).





    Bart ...
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    Re: Fun with the Noktax (50/1.2)

    Makes me smile every time I look at this portrait ...



    | cropped |
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Very nice Bart. Wonderful lens used well.

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    Re: Fun with the Noktax (50/1.2)

    Shot through a windowpane.



    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    I recently sold a lovely K-50/f1.2 that I'd been using for about 6 months adapter on a GH2 and also on a K-7 and LX.

    It's a good lens (build quality especially is stunning) but you pay an big premium for the f1.2, and in my mind the M-50/f1.4 is better at every aperture they share. The f1.2 just doesn't have the clarity and 'crispness' that you get with the M stopped down (perhaps because of the extra glass?).

    Anyway, here's a few from my time time with the K

















    And mounted on my mate's EPL2 (not the best ergonomic match...)
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    Re: Fun with the Noktax (50/1.2)

    Nick, a fine series you're showing here and i'd say too bad you sold the lens !
    I think it's just gorgeous ...

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    I have a recently-bought 50mm M-series f1.4 ($69 AU!), and itís quite soft (in a flary way) wide open. Extra sharpening and Clarity in C1 assists, but stopped down itís excellent. Just need to make some samples good enough to post here.

    Pity Adelaide is not as pretty as Amsterdam!

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by mediumcool View Post
    I have a recently-bought 50mm M-series f1.4 ($69 AU!), and itís quite soft (in a flary way) wide open. Extra sharpening and Clarity in C1 assists, but stopped down itís excellent. Just need to make some samples good enough to post here.

    Pity Adelaide is not as pretty as Amsterdam!
    Hi there Ian,

    that lens seems to be a bargain. Silas Slack (Jono's son) also recently bought a 50/1.4 but that's a PENTAX-A.
    Perhaps the coating is different and more flare resistant.
    Do you use a lens hood ?

    Anyhow, looking forward to your posts.

    Kind regards.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by Knorp View Post
    Hi there Ian,
    that lens seems to be a bargain. Silas Slack (Jono's son) also recently bought a 50/1.4 but that's a PENTAX-A.
    Perhaps the coating is different and more flare resistant.
    Do you use a lens hood ?
    No hood but lighting was overcast in the shot shown below (100% view from C1). Also need to find a microfibre cloth that came with one of my Macs to get the front element really clean!



    Quite like the glow!

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    Re: Fun with the Noktax (50/1.2)

    Here is the full frame. I think I will treat this lens as a great 50mm f2, and a special effects lens at f1.4. No regrets at $69!


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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by mediumcool View Post
    No hood but lighting was overcast in the shot shown below (100% view from C1). Also need to find a microfibre cloth that came with one of my Macs to get the front element really clean!



    Quite like the glow!
    Ian, then cleaning should have top priority, also check the back element.
    But really, if the lens is prone to flare, better use a hood at all times.
    That said, I have a Leica 35/1.4 Summilux-M (pre-aspherical) and wide open the glow is overwhelming.
    But some like it that way ...

    All the best.
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by Knorp View Post
    Ian, then cleaning should have top priority, also check the back element.
    But really, if the lens is prone to flare, better use a hood at all times.
    That said, I have a Leica 35/1.4 Summilux-M (pre-aspherical) and wide open the glow is overwhelming.
    But some like it that way ...
    No, itís uncorrected spherical aberration (or similar) because it improves greatly with stopping down (nowt to do with sky bounce, etc.). Sample of SA with a Mamiya lens (look at the right side to see the glowóquite subtle).

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    Re: Fun with the Noktax (50/1.2)

    Poppies in the wind ([email protected]/1.2)

    Bart ...
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    Re: Fun with the Noktax (50/1.2)

    Hi all. I have just put up a few shots taken with my M-series 50/1.4, in the K5 thread, along with two from my eBay-sourced Vivitar 28mm f2.

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by mediumcool View Post
    Hi all. I have just put up a few shots taken with my M-series 50/1.4, in the K5 thread, along with two from my eBay-sourced Vivitar 28mm f2.
    Ian, I'm not 'all' - I'm Bart !
    Bart ...

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    Re: Fun with the Noktax (50/1.2)

    Quote Originally Posted by Knorp View Post
    Ian, I'm not 'all' - I'm Bart !
    There are other folks looking and posting here too, Bart!

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