Canon CN7x17 Operation Manual

Pages 122

Year 2015

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Canon CN7x17 Specification

The Canon CN7x17 lens, also known as the Canon CINE-SERVO 17-120mm T2.95, is a versatile and high-performance lens designed for professional video and cinema production. It features a focal length range of 17-120mm, offering a 7x zoom ratio, which is ideal for a wide range of shooting scenarios from close-up shots to wide-angle views. The lens maintains a constant maximum aperture of T2.95 throughout the zoom range, ensuring consistent exposure and depth of field control.

This lens is engineered with an advanced optical design that includes large-diameter aspherical elements and advanced coatings to minimize chromatic aberrations and enhance image sharpness and clarity. The CN7x17 supports 4K resolution, making it suitable for high-definition broadcast and cinematic applications. It incorporates a 180-degree focus rotation and a 0.8mm pitch gear for precise manual focus control, which is essential for professional cinematographers.

The lens is equipped with a detachable servo drive unit, providing electronic zoom, focus, and iris control, which is particularly beneficial for ENG (Electronic News Gathering) and documentary shooting styles. The servo unit enables smooth and variable speed zooming, enhancing creative flexibility. The CN7x17 is compatible with industry-standard accessories due to its EF and PL mount options, allowing seamless integration with various camera systems.

Additionally, the lens features robust construction with weather-resistant housing, making it durable for use in challenging environmental conditions. Its ergonomic design ensures ease of use during extended filming sessions. Overall, the Canon CN7x17 lens is a powerful tool for filmmakers seeking high-quality optics and versatile control in a single package.

Canon CN7x17 F.A.Q.

How do I attach the Canon CN7x17 lens to my camera?

To attach the Canon CN7x17 lens to your camera, align the lens mount with the camera mount, ensuring the index marks are aligned. Gently rotate the lens clockwise until it clicks into place.

What is the best way to clean the Canon CN7x17 lens?

Use a blower to remove loose dust and a microfiber cloth with lens cleaner for smudges. Avoid applying liquid directly to the lens.

How can I calibrate the back focus on the Canon CN7x17 lens?

To calibrate the back focus, adjust the flange back adjustment ring while focusing on a test chart until the image is sharp. Secure the ring once calibration is complete.

What should I do if the zoom function on my Canon CN7x17 lens is not smooth?

Check for dirt or debris in the zoom ring. Clean gently and ensure the lens is properly lubricated. If issues persist, consult a professional technician.

How do I update the firmware on the Canon CN7x17 lens?

Connect the lens to a compatible camera body, access the camera's menu, and follow the instructions to update the lens firmware via the camera interface.

Why is my Canon CN7x17 lens not auto-focusing correctly?

Ensure the autofocus mode is correctly set and check that there is enough contrast in the subject. If problems continue, perform a lens reset or consult technical support.

Can I use Canon CN7x17 lens in extreme weather conditions?

The Canon CN7x17 lens is built for durability but should be used with care in extreme conditions. Utilize weather protection gear, and avoid excessive exposure to moisture and dust.

What is the optimal way to store the Canon CN7x17 lens when not in use?

Store the lens in a cool, dry place within its protective case. Use silica gel packets to prevent moisture buildup and avoid exposure to direct sunlight.

How do I perform a manual focus adjustment on the Canon CN7x17 lens?

Switch the lens to manual focus mode, then rotate the focus ring until the desired focal point is sharp. Use focus peaking if available on your camera for precision.

What should I do if the iris control of my Canon CN7x17 lens is not responding?

Check the camera connection and ensure the lens is properly mounted. Reset the camera and lens, and if the issue persists, contact Canon support for assistance.