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Cine Lens Forum
Cine Lens Forum Website
Announcements & Rules
Announcements pertaining to this website and forum along with the rules.
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Suggestions
A place to make suggestions and give feedback. All forum users can vote on the suggestions.
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Manual Focus Cine Lenses (Excluding Anamorphic)
Manual Focus Anamorphic Lenses
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Mirrorless Autofocus Photography Lenses for Cine Please note that if the mirrorless autofocus lens is specifically marketed for video or as a "hybrid" photo/video lens then it belongs in the "Autofocus Cine Lenses (Excluding Broadcast/ENG)" forum instead of this forum.
The Workshop (Maintenance & Repair)
DIY Maintenance & Repair
Hands-on advice for cleaning glass, removing fungus, fixing stiff focus rings, addressing aperture issues, and so on.
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Lens Storage & Protection
Discussing humidity control, dry cabinets, hard cases, caps, and travel safety.
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Modification & Customization
Discussing de-clicking apertures, adding follow focus gears, lens mount conversion, and other DIY cine-mods.
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Service Directory & Marketplace
Professional Repair & Mod Services (Europe)
A directory of trusted European technicians for CLA (Clean, Lube, Adjust), fungus removal, polishing, repairs, and cine-mods (professional mount conversions, de-clicking, etc).
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Professional Repair & Mod Services (North America)
A directory of trusted North American technicians for CLA (Clean, Lube, Adjust), fungus removal, polishing, repairs, and and cine-mods (professional mount conversions, de-clicking, etc).
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Professional Repair & Mod Services (Other)
A directory of trusted technicians outside of North America or Europe for CLA (Clean, Lube, Adjust), fungus removal, polishing, repairs, and and cine-mods (professional mount conversions, de-clicking, etc).
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Rehousing Vendors
Dedicated listings for companies that perform full lens rehousing.
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Marketplace (Buy/Sell/Trade)
Buy, sell, and trade your lenses and related gear here. Please note that we have no oversight or of the transactions in this or any forum and any buying, selling, or trading is at your own risk.
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Lens Adapters & Modifiers (Excluding Anamorphic)
Autofocus-adding Adapters
These innovative adapters physically move the entire lens back and forth to achieve focus, effectively giving autofocus capabilities to manual focus vintage lenses. They utilize the camera's phase-detection AF signals to drive a motorized variable extension helicoid built into the adapter itself.
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Electronic Smart Adapters
These adapters bridge the communication gap between different brands, using electronic contacts to translate protocols for autofocus, aperture control, and image stabilization. They allow modern lenses to function on different camera systems (such as mounting Canon EF lenses on Sony E bodies) while retaining essential automated features.
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Focal Reducers (Speed Boosters)
These optical adapters condense the image circle of a lens, allowing smaller sensors (like APS-C or MFT) to achieve a wider field of view closer to the lens's original format. By concentrating the light, they also increase the effective lens speed, typically by one stop.
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Integrated & Drop-In Filter Adapters
These adapters house optical filtration directly within the mount assembly, utilizing either a removable drop-in drawer or a permanently fixed internal element. This design allows for the use of Variable NDs, polarizers, or diffusion behind the lens, which is particularly critical for ultra-wide optics that cannot accept standard front screw-on filters.
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Mechanical Mount Adapters
These adapters provide a purely physical connection between a lens and camera body, bridging different mount types by precisely correcting the flange focal distance. They contain no glass or electronics, relying entirely on the user for manual focus and aperture control.
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Optical Tuners & Look Modifiers
These specialized adapters contain adjustable optics designed to introduce aesthetic characteristics such as spherical aberration, astigmatism, or vintage textures to otherwise clinical lenses. They allow cinematographers and photographers to "de-tune" modern, sharp glass to emulate the organic feel of heritage optics.
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Teleconverters & Format Expanders
These optical adapters magnify the image circle, effectively increasing the focal length or allowing lenses designed for smaller formats to cover larger sensors. This expansion extends the reach or compatibility of the lens but results in a proportional loss of light transmission.
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Tilt-Shift & Macro Helicoid Adapters
These mechanical adapters incorporate adjustable movements into the mount itself, expanding the functional capabilities of standard static lenses. Macro helicoids extend the flange distance to enable extreme close-up focusing, while tilt-shift versions allow for perspective correction or creative manipulation of the plane of focus.
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Optical Filtration (Lens Filters)
Color, Correction, & Spectrum
Manipulating the wavelength of light: addressing IR pollution, UV filtration, colour correction, colouration, and so forth.
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Diffusion & Contrast Control
Lens filters that pertain to manipulating the texture and sharpness of the image. For example: ProMist, Glimmerglass, Black Satin, Low Con, Digicon, Soft Contrast, etc.
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Diopters, Streaks, & Optical Effects
Manipulating the path and geometry of light. These filters physically alter where the image forms or how points of light are rendered shape-wise.
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ND, Polarizers, & Exposure
Manipulating the intensity and direction of light waves. This includes ND filters, polarizers, and the like.
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Lens Science, Aesthetics, & Resources
Education & Media
A forum for the best lens databases, reference books, podcasts, YouTube channels, historical archives, websites, and more.
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Optics & Lens Theory
Deep dives into how lenses work. Discuss optical designs (Tessar, Cooke Triplet, Double Gauss), glass elements, coatings, aberrations, and physics.
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Visual Language & Aesthetics
Discussing the look of lenses. Topics like depth of field, bokeh character, flares, compression, lens characteristics, and selecting focal lengths and other attributes for storytelling.
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