Nikon 105mm f/2.5 NIKKOR-P AI'D Manual Focus Lens {52}

Nikon 105mm f/2.5 NIKKOR-P: the portrait focal length that built a reputation.

The NIKKOR-P 105mm f/2.5 is one of the most respected manual focus lenses in Nikon's history. At f/2.5, the 105mm focal length sits in a range long favored for portraiture and close subject work, giving enough working distance between photographer and subject while keeping backgrounds well separated. The NIKKOR-P optical formula underpinning this lens earned that reputation over decades of professional use.

This version has been AI'd, meaning an aperture coupling ridge has been added to bring the lens into the AI metering system. That conversion makes it compatible with the broad range of Nikon F-mount bodies that support AI lenses, integrating with the camera's meter than requiring workarounds. The 52mm filter thread is a common size, so existing filter sets from other Nikon glass of this era likely fit without adapters.

Manual focus is the operating mode here, full stop. For photographers who already work that way, this lens slots into a deliberate, considered shooting practice. Its pedigree makes it one of the more compelling reasons to keep a film body or manual-focus-capable DSLR in the bag.

Who It's For

Portrait photographers shooting on Nikon F-mount film bodies or manual-capable DSLRs get the full benefit of the AI metering integration at f/2.5 on a focal length purpose-built for that work. Studio and controlled-light photographers will find manual focus no obstacle when subjects are stationary and precision matters. Film photographers building a period-correct Nikon kit have a direct use case here, as this lens fits naturally into that system. Collectors and optical enthusiasts drawn to the NIKKOR-P formula have a tangible reason to seek out this specific version over unmodified pre-AI glass.

Key Features

• 105mm focal length optimized for portraiture and close subject work
• f/2.5 maximum aperture for subject isolation and shallow depth of field
• Manual focus operation for deliberate, considered shooting practice
• AI coupling ridge enables metering integration on compatible Nikon F-mount bodies
• 52mm filter thread compatible with common filter sets
• NIKKOR-P optical formula with established professional reputation

FAQ

What does AI'd mean on this lens?

The lens has been retrofitted with an AI coupling ridge, which integrates it with Nikon F-mount bodies that support AI metering. Without the AI conversion, this lens would require workarounds on those cameras.

Is this lens autofocus?

No, it's strictly manual focus. The NIKKOR-P 105mm f/2.5 is a manual focus design, period.

What cameras will this lens work on?

Any Nikon F-mount body that accepts AI lenses. The AI coupling allows metering integration on compatible bodies. Compatibility varies by body; check your camera's manual for AI lens support.

What's the filter thread size?

52mm. That's a common size, so you likely already have filters that fit without adapters.

Why choose 105mm for portraiture?

At 105mm with f/2.5, you get enough working distance from your subject while still isolating them from the background. It's a focal length that's been standard for portrait work for decades.

Can I use this on a digital camera?

Yes, on any digital Nikon F-mount body that supports AI lenses. Manual focus and manual metering apply, but the lens will function optically.

What optical formula is this?

This is the NIKKOR-P design, a respected optical formula that earned its reputation through decades of professional use.