Canon Ultrasonic EF28-135mm f 3.5-5.6 IS USM Instruction Manual

Canon Ultrasonic EF28-135mm f 3.5-5.6 IS USM manual cover
Pages 14
Year 1997
Language(s)
English en

Canon Ultrasonic EF28-135mm f 3.5-5.6 IS USM Specification

The Canon Ultrasonic EF28-135mm f/3.5-5.6 IS USM lens is a versatile zoom lens designed for Canon's EF mount cameras, offering a focal length range of 28-135mm. This lens is equipped with Canon's Image Stabilization (IS) technology, providing up to two stops of shake correction, making it ideal for handheld photography in low-light conditions or at longer focal lengths. The Ultra-Sonic Motor (USM) ensures fast and near-silent autofocus performance, which is beneficial for both still photography and video recording. With a variable aperture range of f/3.5-5.6, the lens balances performance and portability, making it a practical choice for everyday use. The optical construction features 16 elements in 12 groups, including a molded glass (GMo) aspherical element, which helps to reduce distortion and aberrations throughout the zoom range. The lens also boasts a minimum focusing distance of 50cm, enabling close-up shots with a maximum magnification of 0.19x. Its seven-blade diaphragm contributes to a pleasing out-of-focus quality, or bokeh, in images. The lens is constructed with a durable build, weighing approximately 540 grams, making it relatively lightweight for its class. The filter thread size is 72mm, allowing for a variety of filters to be used to enhance image capture. Overall, the Canon EF28-135mm f/3.5-5.6 IS USM lens is a reliable and flexible option for photographers seeking a wide-to-telephoto zoom lens with stabilization and quick autofocus capabilities.

Canon Ultrasonic EF28-135mm f 3.5-5.6 IS USM F.A.Q.

How do I properly clean the Canon Ultrasonic EF28-135mm f/3.5-5.6 IS USM lens?

To clean the lens, use a microfiber cloth or a special lens cleaning tissue. Gently wipe the lens surface in a circular motion. For stubborn spots, apply a small amount of lens cleaning solution to the cloth, not directly on the lens. Avoid using household cleaners or rough materials.

What should I do if the image stabilization (IS) feature is not working?

First, ensure the IS switch on the lens is turned on. If it is on and the IS is still not working, try cleaning the lens contacts with a soft, dry cloth. If the problem persists, the lens may require professional servicing.

Can I use this lens with Canon DSLR cameras that have an APS-C sensor?

Yes, the Canon Ultrasonic EF28-135mm f/3.5-5.6 IS USM lens is compatible with both full-frame and APS-C DSLR cameras. Note that on APS-C cameras, the effective focal length will be approximately 45-216mm due to the crop factor.

What are the steps to calibrate the autofocus of this lens?

To calibrate autofocus, use a focus chart and set up your camera on a tripod. Switch to live view mode and manually focus on the chart. Then, use the camera's AF microadjustment feature to fine-tune the autofocus. Check your camera manual for detailed instructions.

How can I reduce lens flare when using this lens?

To reduce lens flare, use a lens hood to block stray light. Avoid pointing the lens directly at strong light sources like the sun. Additionally, adjusting your shooting angle and using a polarizing filter can help minimize flare.

What should I do if the zoom ring feels stiff or sticky?

If the zoom ring is stiff, check for any debris or dirt that may be lodged in the mechanism. Gently clean around the zoom ring with a soft brush. If the issue persists, it may require professional servicing to avoid further damage.

Is it possible to use this lens for macro photography?

While this lens is not a true macro lens, it can be used for close-up photography with a minimum focusing distance of 0.5 meters. For better macro results, consider using extension tubes or a dedicated macro lens.

How can I achieve sharper images with this lens?

To achieve sharper images, use a tripod to minimize camera shake, especially at slower shutter speeds. Utilize the image stabilization feature, close the aperture slightly (around f/8-f/11), and ensure proper focus.

What maintenance should be done to ensure the longevity of this lens?

Regularly clean the lens surfaces, check for dust or debris, and store the lens in a dry, dust-free environment. Use a lens cap when not in use, and avoid exposing the lens to extreme temperatures or humidity.

How do I mount the Canon Ultrasonic EF28-135mm f/3.5-5.6 IS USM lens onto my camera?

Align the red dot on the lens with the red dot on the camera mount. Gently insert the lens into the mount and rotate it clockwise until you hear a click, indicating the lens is securely attached.