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Black cinema lens barrel with drop-in filter slot and E mount, 85mm T1.9

Nisi

Nisi Athena Prime 85mm T1.9 Full-Frame Cinema Lens E Mount Drop-In Filter

SKU CH-MEHR-HEPA2

Full-frame 85mm cinema lens with T1.9 aperture, 46mm imaging circle and drop-in filter mount for E-mount cameras

  • TypeAccessory
  • T1.9 aperture enables shallow depth of field for cinematic subject isolation
  • 46mm imaging circle covers full-frame sensors with edge-to-edge clarity
  • Drop-in filter mount allows quick ND or polariser changes without front threading
  • Minimised focus breathing keeps framing consistent during rack-focus pulls
  • Ultra-low chromatic aberration and high micro-contrast deliver fine detail across the frame

85mm T1.9 Full-Frame Cinema Lens

The NiSi Athena Prime is an 85mm full-frame cinema lens with a T1.9 aperture and E mount. It covers a 46mm imaging circle and delivers maximum micro-contrast control with ultra-low chromatic aberration. A drop-in filter mount allows quick insertion of ND or polarising filters without front-thread accessories. Focus breathing is minimised for consistent framing during focus pulls.

Filmmakers needing fast portrait focal length

This lens suits cinematographers who want a fast 85mm prime with native E mount and internal filter workflow. The T1.9 aperture provides shallow depth of field and low-light capability. Shooters requiring zoom versatility, wider focal lengths, or autofocus for run-and-gun work should consider other options. The manual focus design demands practiced technique.

Drop-in filter mount eases workflow

Installation is a simple E-mount attachment with no adapter needed. The drop-in filter tray slides into the lens barrel, eliminating front-thread vignette risk on wide-angle shots. Common issues include forgetting to seat the filter tray fully, which can cause light leaks, and underestimating the focus rotation required for precise manual pulls.

Highlights

  • T1.9 aperture enables shallow depth of field for cinematic subject isolation
  • 46mm imaging circle covers full-frame sensors with edge-to-edge clarity
  • Drop-in filter mount allows quick ND or polariser changes without front threading
  • Minimised focus breathing keeps framing consistent during rack-focus pulls
  • Ultra-low chromatic aberration and high micro-contrast deliver fine detail across the frame

Specifications

TypeAccessory

Questions about this item

What camera mount does the 85mm Athena Prime T1.9 require to function?

The lens uses an E mount so it attaches directly to Sony E mount cinema or mirrorless bodies without an adapter.

Can the drop-in filter system on this 85mm T1.9 lens be used with older front-thread filters I already own?

No, the drop-in tray accepts only the dedicated drop-in filters; existing screw-in filters cannot be mounted on this lens.

How can I verify the 46mm imaging circle covers my full-frame sensor after mounting the lens?

Record test footage at T1.9 and check the corners for vignetting; even illumination across the frame confirms full coverage.

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