Amazon.com : UV Ultraviolet Clear Haze Glass Protection Protector Cover Filter for Canon EF 75-300mm f/4-5.6 III Lens : Electronics
Amazon.com : B + W Clear Protection Filter for Camera Lens – Ultra Slim Titan Mount (T-PRO), 007, HTC, 16 Layers Multi-Resistant and Nano Coating, Photography Filter, 82 mm : Electronics
Are Clear UV Filters a Pro or Con for Expensive Lenses
Confused about protective filters for your lens? Roger Cicala breaks it down: Digital Photography Review