HEIN-TECH focusing aid for Canon RF 100-500mm f/4.5 - 7.1 L IS green

HEIN-TECH focusing aid for Canon RF 100-500mm f/4.5–7.1 L IS USM, green

Working with long telephoto focal lengths can sometimes be a bit fiddly, especially when manual focus comes into play. This is exactly where the HEIN-TECH focusing aid for the Canon RF 100-500mm f/4.5–7.1 L IS USM comes in: it literally brings the focus ring closer to you and makes precise focusing noticeably more relaxed.

Ergonomic repositioning of the focus ring

The focusing aid is attached directly to the focus ring of the Canon RF 100-500mm f/4.5–7.1 L IS USM (model year 2020) and relocates its operating point to a more ergonomically favorable position. This means you no longer have to reach awkwardly along the lens, but instead have the focus where your hand naturally rests. This is particularly noticeable during longer sessions—wildlife, sports, maybe even a concert—because your hand position remains significantly more relaxed.

Comfortable manual focus in everyday use

If you like to focus manually, you know the situation: tiny movements, cold fingers, a subject that doesn’t give you a second chance. With this focusing aid, the manual focus can be operated comfortably and with control. The enlarged contact surface makes fine adjustments easier, allowing you to shift the plane of focus very precisely without constantly having to readjust your grip. Especially at 500 mm, where every small turn of the focus ring becomes visible, this is a real advantage.

Unobstructed access to all lens switches

Even with the focusing aid mounted, the switches on the Canon RF 100-500mm f/4.5–7.1 L IS USM remain accessible. AF/MF switch, focus limiter, image stabilizer—everything can be operated as usual. Our understanding was: the focusing aid should support you, not get in the way. That’s why it is designed so that you don’t have to make any compromises regarding the functionality of the lens.

Precisely tailored to the Canon RF 100-500mm f/4.5–7.1 L IS USM

This version is specially developed for the Canon RF 100-500mm f/4.5–7.1 L IS USM. Its shape closely follows the focus ring of this lens so that it mounts securely and nothing twists or wobbles. This keeps the feel consistent and lets you concentrate fully on your subject instead of worrying about the accessory.

Practice-oriented design for photo and video

Whether you’re tracking birds in flight, panning manually at sporting events, or aiming to achieve smooth focus pulls in video, the focusing aid supports you in all situations where you deliberately rely on manual focus. It helps you maintain control even in hectic moments because you can find the position of the focus ring more quickly and adjust it more finely. In short: less fiddling, more keepers.

Subtle yet visible green

The green version provides a subtle visual contrast to the lens without looking loud or distracting. In your bag, you can find the focusing aid more quickly, and on the lens you can see at a glance where your hand should go. At the same time, the overall setup remains professional and unobtrusive, matching the character of Canon’s L series.

Easy installation and everyday usability

Installation is straightforward and done directly on the focus ring of the Canon RF 100-500mm f/4.5–7.1 L IS USM. Once attached, the focusing aid can remain on the lens permanently, as it does not interfere with the use of the zoom ring or the attachment of additional accessories. This way you don’t have to tinker with your setup before every shoot—you can simply take it out of your bag and get started.

For everyone who likes to take focus into their own hands

This focusing aid is aimed at everyone who doesn’t see manual focus as a last resort, but as a deliberate tool—whether for precise focus shifts, challenging lighting situations, or simply because autofocus sometimes doesn’t do exactly what you want. With the HEIN-TECH focusing aid for the Canon RF 100-500mm f/4.5–7.1 L IS USM, manual focusing becomes noticeably more comfortable, more controlled, and less fatiguing in the long run.