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Anybody have Lux 50 ASPH on a helicoid adapter (such as H...
  
 
turnstyle
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p.1 #1 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


Hi all,

I've followed some discussions regarding whether the Lux 50 ASPH will perform optimally if it doesn't reach infinity focus a the hard stop.

I've also been interested in using a helicoid adapter to reduce the MFD.

Just wondering:

1) what is the reduced MFD for the Lux 50 ASPH with the helicoid engaged?

2) how is the IQ, with a subject near the reduced MFD with the helicoid engaged? (Happen to have any examples?)

Thanks kindly! -Scott



Nov 14, 2013 at 08:06 PM
philber
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p.1 #2 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


I am using a Lux 50 on a NEX 7, mounted via a Hawks' helicoid. It reduces the MFD by about 40%, which makes flower shots much more of a possibility. I happen to find the results very much to my liking.
Here are two examples




  NEX-7    ---- lens    1/125s    100 ISO    0.0 EV  






  NEX-7    ---- lens    1/400s    100 ISO    0.0 EV  




Nov 15, 2013 at 10:35 PM
turnstyle
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p.1 #3 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


Thank you kindly for sharing!

Any downsides to the Hawk's for regular shooting? (I assume you don't also use a 'regular' adapter?)



Nov 16, 2013 at 02:22 PM
 

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philber
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p.1 #4 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


Yes, there is a minor downside. The Hawks' has a tab for focusing the helicoid. When that tab is not set for zero helicoid extension, and I focus the lens to infinity for a quick grab, I am so badly mis-focused it is not even funny. Same thing when I focus precisely, then adjust something else and knock the helicoid tab a bit. It just needs a bit of extra care when handling.


Nov 16, 2013 at 07:23 PM
turnstyle
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p.1 #5 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


Thanks -- have you heard anything about Voightlander's soon-to-be-released helicoid? Do you think it would address that problem? Thanks again...


Nov 16, 2013 at 10:58 PM
lumis beans
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p.1 #6 · Anybody have Lux 50 ASPH on a helicoid adapter (such as Hawk's)?


philber wrote:
Yes, there is a minor downside. The Hawks' has a tab for focusing the helicoid. When that tab is not set for zero helicoid extension, and I focus the lens to infinity for a quick grab, I am so badly mis-focused it is not even funny. Same thing when I focus precisely, then adjust something else and knock the helicoid tab a bit. It just needs a bit of extra care when handling.


Phil, I have a tabbed Cron; didn't want two tabs to deal with. The tab on the Hawk's is held on by 2 tiny screw. I believe they are #00 philips. Remove the screws and voila, comes right off.



Nov 16, 2013 at 11:09 PM





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