Lomo OKC 1-22-1 22mm
You will get STL files for rehoused lens with 95 and 80mm front diameter , also 4 different options to use circular threaded filters.
As an end result you will get a lens with :
95mm or 80mm front diameter for Matte Box use (Clamp-on style supported )
82,77,72 or 67mm filter thread for your favorite lens filters
0.8 module gears for follow focus and iris control with hard stops
70 degree focus throw
aperture marking
weight and length (80mm OD):
Canon EF mount : 199g , 74mm
Sony E and Fuji X mount :228g , 85mm
weight and length (95mm OD ):
Canon EF mount : 210g , 74mm
Sony E and Fuji X mount :238g , 85mm
Close focus is 14cm on EF mount and 15.5cm on Sony E and Fuji X.
Lens will focus to infinity but keep in mind that quate pronounced vignette will appear at aperture closed beyond 5.6 at infinity focus.
The focus throw is quate short - around 70 degrees, however using manual or wireless follow focus unit makes the use of this lens pretty nice and easy.
The lens barrel will move forward when focusing also the focus ring will move forward due the the m42 helicoid design.
However this will not impact the lens usage with wireless follow focus. I have tested this lens with PD movie wireless follow focus and works great.
In order to install the housing you will need a Lomo OKS 1-22-1 lens block with removed aperture ring.
Please keep in mind that you will need to buy separately a step up ring, heat inserts, hex screws , scrub screws etc. ( full list with all parts and hardware needed is provided below).
Check my links below ( those are not affiliated links , but I have used those sellers to purchase mine and those are world wide available ).
Not mandatory step but , I would highly recommend to take apart the m42 helicoid and remove the pre applied grease, clean it with alcohol and re-grease it with proper grease ( I have used bardahl marine grease ,but any NLGI 3 grease will do the job, Ciatim greases will work too ).
Tap M4x0.7mm thread to all holes indicated with RED ARROWS.
M2 heat insert to all holes indicated with BLUE ARROWS.
For the rehousing assembly, don't over tighten the screws, instead use a low or low to medium strength thread locker for plastic (Loctite or Loxeal ).
For the front cap , aperture stickers, use high quality paper or better use vinyl. If you print your lens stickers at home , use an A4 size paper setting.
Last but not least, if you don't like the design of my front cap , you can purchase a high quality front 80 or 95mm aluminum lens cap that will fit on my housing ( see the links below ).
Parts needed:
1 x 10-15.5mm M42 helicoid :https://a.aliexpress.com/_EIBSTXt
3 x 1.4mm 5mm long screws ( to replace the original short helicoid screws): https://a.aliexpress.com/_EIOyqaT
1 x 1mm OD, 12mm long metal pin:(to change the aperture)
3 x M4 3mm long grub screw:(to secure the lomo lens block) : https://a.aliexpress.com/_EysxfIR
4 x M2 heat inserts (for EF cap only) : https://a.aliexpress.com/_EIPY3OJ
4 x M2 bolts 5mm (for EF cap only):
https://a.aliexpress.com/_EG6eHdN
Please select the appropriate adapter for your system:
1 x EF to M42 adapter :https://a.aliexpress.com/_EGDSkQb
1 x Sony E to M42 adapter: https://a.aliexpress.com/_Ewb5att
1 x Sony E mount rear lens cap :https://a.aliexpress.com/_ExVGsDt
Fuji X to M42 adapter: https ://a.aliexpress.com/_EuNZwEx
Fuji X mount rear lens cap: https ://a.aliexpress.com/_EHagbIr
6x M2 8mm long bolts (to connect the aperture ring with the main body ): https://a.aliexpress.com/_EGMGM1D
3x 15mm long 4mm OD M2 aluminum standoff spacers :https://a.aliexpress.com/_EuekrXZ
for 95mm OD front with 82mm filter thread:
1 x 77-82mm step up ring: https://a.aliexpress.com/_ExfQWab
4 x M4 5mm long grub screws: https://a.aliexpress.com/_EuBWO75
for 95mm OD front with 77mm filter thread:
1 x 72-77mm step up ring : https://a.aliexpress.com/_ExfQWab
4 x M4 5mm long grub screws : https://a.aliexpress.com/_EuBWO75
for 80mm OD front with 72mm filter thread:
1 x 67-72mm step up ring : https://a.aliexpress.com/_ExfQWab
4 x M4 3mm long grub screws : https://a.aliexpress.com/_EuBWO75
for 80mm OD front with 67mm filter thread:
1 x 62-67mm step up ring: https://a.aliexpress.com/_ExfQWab
4 x M4 5mm long grub screws : https://a.aliexpress.com/_EuBWO75
In case you want fancy front metal caps:
1 x 95mm front aluminum lens cap :https://a.aliexpress.com/_EvCJmJV
1 x 80mm front aluminum lens cap :https://a.aliexpress.com/_EJMoh6X
Videos of the actual assembly and wireless follow focus use here:
https://drive.google.com/drive/folders/1dw8qtHJOAkGJ3G6swDNKpflQZu-lR7me