Canon EF 500mm f/4L IS USM mkII Lens + FREE 1.4x Mk III Extender

Super TelephotoTELEPHOTOA lens with long focal length capable of making distant objects appear nearer thus larger. Essentially, it isolates and magnifies the subject so that it appears as a full image when shooting from a distance. Telephoto lenses are ideal for photographing subjects that are further away, such as wildlife and sports photography. Lens

The EF 500mm f/4L IS II USM super telephoto lens features completely redesigned fluorite optics that deliver sharper images with less chromatic aberration and has a lighter weight thanks to magnesium and titanium construction elements.

Image Stabilisation Technology

Because image Stabilisation Technology in super telephoto lenses may inadvertently over-compensate and interfere with composing and framing distant or moving subjects, the EF 500mm f/4L IS II USM includes an advanced third Image Stabilization mode (Mode 3) that activates IS only when the shutter button is fully pressed.

Suited to professional action, sports & nature photography

Additionally, all three IS modes give the equivalent effect of a shutter speedSHUTTER SPEEDAperture, shutter speed and ISO form what is known as the exposure triangle in photography. Shutter speed is the length of time that a single frame is exposed for, more specifically how fast the shutter opens and closes to permit light entering the lens, to reach the sensor. A slow shutter speed means a longer exposure time useful for motion blur like the silky look of flowing water, whereas a fast shutter speed means a shorter exposure time useful for freezing the appearance of motion in images like a hummingbird in flight. It is measured in seconds starting at 1 second and halving our doubling in time. For example: 1/2s, 1/4s and 1/8s are all fractions of a second with 1/2s being the longest exposure time, 1/4s half of that and 1/8s another half etc. four stops faster, ideally positioning the Canon EF 500mm f/4L IS II USM for professional action photography, from sports to nature. The addition of the Power Focus mode enables smooth focus change when shooting video. Buttons and switches are redesigned for intuitive, deliberate operation, and dust and water sealing keeps the EF 500mm f/4L IS II USM functioning flawlessly in even the most challenging environments.

Features

• EF mount L-series lens
• ApertureAPERTUREAperture, shutter speed and ISO form what is known as the exposure triangle in photography. Aperture refers to an opening inside the lens, similar to the iris of your eye, that changes in diameter to control the amount of light that enters a camera. Aperture is expressed in f-stops: the lower the number, the larger the aperture, e.g. f/1.4 is larger than f/8. A larger (or wider) aperture allows more light to pass through the lens to the sensor (film) as a picture is taken, particularly useful in low-light conditions. A larger aperture also produces a shallower depth-of-field, and thus more background blur. range: f/4-32
• Fluorite optics for sharper images
• Three-mode optical Image Stabilisation
• Ultrasonic Autofocus Motor
• Power focus mode & focus preset
• Manual focus override
• Dust & moisture proof sealing
• Magnesium / titanium for lighter weight
• Attachment slot for wire-type lock