IronGlass / Spherical Prime
IronGlass Soviet MKII
Rehoused Soviet optics that include the Helios 44-2 58mm. IronGlass preserves distinct donor-lens rendering while adding cine housings and matched 95mm fronts.
Representative lens illustration. Details simplified. Not to scale.
01 / The lens
Optical Profile
- Lens type
- Spherical Prime
- Focal range
- 20–135mm in the six-lens reference set
- Max. aperture
- T2.1–T3.6 in the reference set
- Coverage
- Super 35 / Full Frame
Full Frame in the six-lens reference set. Larger coverage varies by donor lens and sensor mode.
- Mounts
- PL
- Image circle
- Not established
GLM sourcing
Ask GLM about sourcingGLM can use this profile as a starting point for lens strategy, sourcing, or adjacent package recommendations.
GLM editorial assessment
Rendering notes
These are qualitative selection notes. Evaluate the exact lens version, focal length and aperture on your intended camera.
Use cases
- Character-led vintage lens packages
- Close portraiture with Helios or Jupiter rendering
Tradeoffs to test
- Aperture and rendering differ among the donor lenses.
- Custom MKII options extend beyond the six-lens reference package.
02 / Before the shoot
Plan a lens test
Test the focal lengths and apertures you expect to use. Check the center and edges, move a light across frame, and pull focus through your planned working distances. Include skin tones and the lighting conditions from your shoot.
03 / Further reading
Sources
Consult the original documentation for the specific focal length, mount and lens version. GLM's rendering notes and use cases are editorial interpretation.