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Compact-Servo lenses: Image Quality
Compact-Servo lenses

Cinema Quality Optics

Compact-Servo lenses feature high-performance optics in a compact design. Different aspects of lens performance are emphasized when shooting video compared to still images, and Compact-Servo lenses are optimized for video production.

High Level 4K Optical Performance

The 4K optical performance produces a significantly sharper image than 2K/HD. The various advanced design strategies used help to ensure over 4K resolution at picture center and a careful control of falloff of image sharpness at picture extremities.

The excellent contrast range associated with High Dynamic Range (HDR) imaging helps ensure both deep black reproduction and the excellent handling of scene specular highlights. HDR image capture significantly enhances both the contrast and the richness of colors in a scene, but it also poses a potential challenge in exacerbating the visibility of any lens chromatic aberrations. The Compact-Servo lenses’ optical design carefully anticipated this, incorporating advanced optical design strategies to help minimize such aberrations.

High Level 4K Optical Performance

Parfocal Operation – Precise Focus Through The Entire Zoom Range

Canon Compact-Servo lenses are parfocal in both manual and autofocus modes. The Compact-Servo lenses employ a special compensating lens group that moves to maintain precise focus while a separate lens group performs the zooming action. Maintaining focus while changing focal length allows the Compact-Servo lenses to be used in video production where zooming while recording is required.

Consistent Brightness Throughout
The Entire Zoom Range

Canon Compact-Servo lenses maintain a wide aperture of T4.4 (F4.0) throughout their zoom range. This allows zooming while at maximum aperture without any dimming of the image.

MINIMIZED FOCUS BREATHING

Designed specifically for video production, Canon Compact-Servo lenses minimize focus breathing when adjusting focus, making them ideal for cinema production. Focus breathing is a change in magnification of the image when adjusting focus.

CONTINUOUS IRIS CONTROL

Canon’s Compact-Servo lenses can smoothly adjust between open and closed for precise exposure control and live in-shot changes. This can be useful to compensate for a change in exposure when moving between indoor and outdoor light levels within a shot. The 9-blade iris creates a rounded aperture so out-of-focus highlights appear circular. An odd number of iris blades increases the number of radial lines in a lens flare while simultaneously reducing the radial lines’ size, creating a less distracting flare. Compact-Servo lenses’ irises can also be completely closed, which is useful when adjusting black balance.

9 blades

9 blades

6 blades

6 blades

Continuous Iris Control

Image Stabilization (IS)

Compact-Servo lenses offer three levels of Image Stabilization to allow for stable, smooth images. IS modes include the standard mode for handheld operation, a maximum mode for high-frequency movement such as vehicle vibration and a smooth mode intended for tripod-based operating. The IS function can also be switched off entirely to match user preferences.

Image Stabilizer ON

Image Stabilizer ON

Image Stabilizer OFF

Image Stabilizer OFF

Color Consistency with Canon Cinema Lenses

Canon’s color science has become highly refined over generations of lens designs, paying the closest attention to a pleasing skin tone reproduction. Compact-Servo lenses can be used interchangeably with other Canon Cinema lenses during the same production since both have the same warm, cine-look color characteristics – making it easier to maintain consistent color when multiple lenses are used.

Color Consistency With Canon Cinema Lenses

FLANGE BACK ADJUSTMENT

A flange back adjustment mechanism is built-in allowing you to adjust on site which helps to provide even greater optical performance among various cameras.

Certain effects and images are simulated.