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Top features Take blur free shots using high quality Image Stabilisation Professional build quality resistant to dust and moisture Capture spontaneous moments faster with quick Ultrasonic focusing Get better colour balance and sharper images Optimal flash metering for better flash photography Take blur free shots using high quality Image Stabilisation An Image Stabiliser helps you to take better shots by compensating for camera shake. The lens allows shutter speeds two stops slower than normal to be used without blur. For convenience the stabilisation can be turned off to allow for panning. Professional build quality resistant to dust and moisture Part of Canon's L series flagship professional range, this lens features the best in precision designed EF optics, and combines superior performance with premium build quality resistant to dust and moisture. Capture moments faster with Ultrasonic focussing An ultrasonic motor makes focussing faster and more accurate in near silence so you don't miss out on capturing spontaneous moments. Manual override allows seasoned photographers to adjust focus without leaving autofocus mode. Get better colour balance and sharper images Canon's Super Spectra coating improves colour balance, and reduces lens flare and picture distortion. The coating allows up to 99.9% of light to pass through the CMOS camera sensor to minimise ghosting, where a faint second image appears in a photo. The result is a consistent colour balance and sharper images. Optimal flash metering for better flash photography When taking shots the Canon EF 300 mm f4.0 passes distance information between yourself and your subject back to a compatible Canon EOS camera flash system to ensure optimal flash metering, and better quality shots that don't look overexposed.
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