Canon Ultrasonic EF50mm f 1.2L USM Instruction Manual

Canon Ultrasonic EF50mm f 1.2L USM manual cover
Pages 11
Year 2006
Language(s)
English en

Canon Ultrasonic EF50mm f 1.2L USM Specification

The Canon Ultrasonic EF50mm f/1.2L USM Lens is a high-performance lens designed for professional photographers seeking exceptional optical quality and low-light performance. With a maximum aperture of f/1.2, this lens allows for superior light gathering, resulting in outstanding performance in dimly lit environments while providing beautiful background blur and depth of field control. The lens construction includes eight elements in six groups, incorporating advanced optical designs to minimize aberrations and ensure sharp, high-contrast images throughout the frame.

The Ultrasonic Motor (USM) technology enables fast, precise, and near-silent autofocus, making it suitable for both still photography and video applications. Full-time manual focus override allows photographers to make fine adjustments without switching out of autofocus mode. The lens features a robust build quality consistent with Canon's L-series, including weather sealing to protect against dust and moisture, making it reliable for professional use in varying environmental conditions.

With a minimum focusing distance of 0.45 meters, the EF50mm f/1.2L USM Lens provides flexibility for capturing subjects at close range while maintaining excellent image quality. The lens is compatible with full-frame Canon EF-mount cameras and can also be used with APS-C models, where it offers an effective focal length of approximately 80mm. The nine-blade circular aperture contributes to pleasing out-of-focus highlights, enhancing the aesthetic quality of bokeh in photographs. Weighing approximately 580 grams, this lens balances well on a variety of camera bodies, ensuring ease of handling during extended shooting sessions. Overall, the Canon Ultrasonic EF50mm f/1.2L USM Lens offers exceptional optical performance, build quality, and versatility for professional applications.

Canon Ultrasonic EF50mm f 1.2L USM F.A.Q.

What are the key features of the Canon Ultrasonic EF50mm f/1.2L USM Lens?

The Canon Ultrasonic EF50mm f/1.2L USM Lens features a large f/1.2 aperture for low-light performance and shallow depth of field, ultrasonic motor (USM) for fast and quiet autofocus, and high-quality L-series optics for superior image quality.

How do I clean the Canon EF50mm f/1.2L USM Lens?

To clean the lens, use a blower to remove dust, then gently wipe the lens surface with a microfiber cloth. For stubborn smudges, use lens cleaning solution applied to the cloth, not directly on the lens.

How do I achieve the best focus with this lens?

For optimal focus, use the lens's manual focus ring for precision or enable autofocus for speed. Focus using the center AF point for accuracy and utilize the lens's wide aperture for a shallow depth of field.

What is the best way to store the Canon EF50mm f/1.2L USM Lens?

Store the lens in a cool, dry place, preferably in a padded camera bag or case. Use lens caps on both ends to protect from dust and scratches and avoid exposure to extreme temperatures and humidity.

How can I reduce lens flare when using this lens?

To reduce lens flare, use the lens hood provided with the Canon EF50mm f/1.2L USM. Avoid shooting directly into bright light sources and consider adjusting your shooting angle.

What should I do if the autofocus is not working properly?

If autofocus issues arise, check that the lens is securely attached to the camera, ensure the AF/MF switch is set to AF, and clean the lens contacts. If problems persist, reset the camera settings or consult Canon support.

Can I use this lens with a full-frame and APS-C camera?

Yes, the Canon EF50mm f/1.2L USM Lens is compatible with both full-frame and APS-C Canon DSLR cameras. On APS-C cameras, the effective focal length becomes approximately 80mm due to the crop factor.

How can I achieve a bokeh effect with this lens?

To achieve bokeh, use a wide aperture (f/1.2) to blur the background, focus on a subject close to the lens, and ensure that the background is distant. This creates a pleasing out-of-focus effect.

What should I do if I notice chromatic aberration in my images?

To reduce chromatic aberration, stop down the aperture slightly from f/1.2, use in-camera corrections if available, or correct it in post-processing software like Adobe Lightroom or Photoshop.

How do I protect the lens from moisture and dust?

Use a UV or clear protective filter to shield the front element. Ensure the lens is sealed properly with the camera body and store it in a dry environment with desiccants to prevent moisture accumulation.