Author Topic: Bell and Howell Lumax 1" f/1.9 Lens Samples ***** (Read 3450 times)

GumPhoto · « **on:** February 25, 2010, 08:59:41 AM »

the Bell and Howell Lumax c mount lens - 1 inch and f1.9

examples all shot at f1.9

here it is at f4

and at f8

GumPhoto · « **Reply #1 on:** February 25, 2010, 09:02:29 AM »

sorry, 1st time. I'll space it better next time

gareth · « **Reply #2 on:** February 25, 2010, 09:08:54 AM »

small cine lens. nice.

did you crop the photos? does it vignette?

BTW, you can modify your message and add one (or two) return lines between the photos to space them out if you wish.

GumPhoto · « **Reply #3 on:** February 25, 2010, 11:32:53 AM »

Quote from: gareth on February 25, 2010, 09:08:54 AM

small cine lens. nice.

did you crop the photos? does it vignette?

BTW, you can modify your message and add one (or two) return lines between the photos to space them out if you wish.

I've standardized on the square format because so many of the c mount lenses DO vignette. This one not as much, as you can see in the last image which is full frame.

adash · « **Reply #4 on:** February 25, 2010, 12:41:45 PM »

Small and cute lens.
Very artistic effect with vignetting though.
Is the bokeh so twisted only when wide open?
Can you retake the last photo with the lens stopped down to f:4, for example?
Would be nice to see how bokeh and vignetting change when stopped down.

cosinaphile · « **Reply #5 on:** March 30, 2010, 09:21:14 PM »

love the tangerine, love adapted glass...........bravo

zcream · « **Reply #6 on:** August 21, 2010, 04:24:29 PM »

Hi GumPhoto!

Hi mate. I have the same lens. I had to disassemble mine to relube the helicoid, and now I cannot screw it back in. Just wondering if you ever opened your lens and were able to reassemble the rear helicoid aka focus ring assembly.

I removed the screw helicoid WITHOUT marking the alignments.
There is one collar that attaches to the lens body, one collar is the rear C-mount and the focus ring that is on top of these 2 collars.
The rear collar has a screw that goes into a slot in the lens body collar.

However, the threads in the 2 inner collars are different, so when I align the 2 inner collars and screw into the focus ring, the lens body collar moves more than the rear collar and the screw slips out.

cosinaphile · « **Reply #7 on:** August 21, 2010, 09:17:03 PM »

keep trying the helicoid thread will catch eventually likke a stubborn filter thread for pentax 110!!

Bell and Howell Lumax 1" f/1.9 Lens Samples *****