Nikon 300mm f/2.8 NIKKOR IF ED AIS Manual Focus Lens {39 Drop-In/Filter} with Built-in Hood

Nikon 300mm f/2.8 AIS: the manual-focus telephoto that defined a generation

The 300mm f/2.8 NIKKOR IF ED AIS is a fixed focal length telephoto built around two core engineering decisions that still matter today. Internal Focus keeps the barrel length constant during focusing, so your balance point never shifts mid-shot. ED glass addresses chromatic aberration at the source, correcting it before it compounds through the optical path.

The 39mm drop-in filter system lets you swap filters without removing the lens from the camera, a practical advantage when working in changing light with a lens this size. The built-in hood is always ready without adding bulk to your kit. AI-S metering coupling means this lens communicates aperture data to compatible Nikon bodies, and compatibility with the broader F-mount ecosystem gives it reach across decades of Nikon film and digital bodies.

At f/2.8, you have real light-gathering capability at 300mm, which matters when the action is moving fast or the ambient light is dropping. A lens with this optical pedigree, in the F-mount, at this focal length, represents strong value for any shooter who works in manual focus.

Who It's For

Sports and wildlife photographers who shoot manual focus will find the f/2.8 aperture at 300mm gives genuine low-light reach that slower telephoto alternatives cannot match. Film photographers building a serious F-mount kit get full AI-S metering coupling with compatible bodies. Studio and portrait shooters who want precise control over focus placement at a long telephoto distance benefit from the internal focus design, which keeps handling consistent throughout the focus range. Documentary photographers working in the field will appreciate the drop-in filter holder, which allows filter changes without dismounting the lens.

Key Features

• 300mm fixed focal length with f/2.8 maximum aperture
• Internal Focus system maintains constant barrel length during focusing
• ED glass elements correct chromatic aberration
• AI-S metering coupling for aperture communication
• 39mm drop-in filter system, no threaded filter ring
• Built-in hood integral to optical design
• Nikon F-mount (AI-S) compatibility across film and digital bodies
• Manual focus operation

FAQ

What does Internal Focus mean on this lens?

The barrel stays the same length when you focus from infinity to close distance, so your balance point and weight distribution don't shift mid-shot. That stability matters when you're tracking action or working handheld at 300mm.

Why does ED glass matter in a 300mm telephoto?

ED (Extra-low Dispersion) glass corrects chromatic aberration at the source before color fringing compounds through the optical path. At 300mm, color separation becomes visible fast, so ED elements directly affect sharpness and contrast.

How does the 39mm drop-in filter system work?

Filters load into a holder built into the lens barrel without removing the lens from the camera. When light changes and you need a different filter, you swap them in place instead of unscrewing a standard threaded filter and breaking your shooting position.

Will this lens meter on modern Nikon digital bodies?

AI-S metering coupling communicates aperture data to compatible Nikon bodies. Compatibility varies by body - check your camera's manual for AI-S lens support, as operational behavior differs between film and digital.

What's the practical advantage of f/2.8 at 300mm?

You get real light-gathering power at a long focal length. With fast film or higher ISO digital bodies, you can shoot in lower ambient light or at faster shutter speeds without losing depth of field to stopped-down apertures.

Is the built-in hood removable or permanent?

The hood is built into the lens design. It's always ready without adding separate gear to your kit or introducing one more piece to lose.