10/12/2012

Features And Reviews For Canon 0345B002

By Alexandra Anderson


The 0345B002 is a 70 to 300mm f 4 to 5.6 USM interchangeable lens with Image Stabilizer. This camera in other words is perfectly capable of taking long range shots without any shaking or blurring using a three stop IS mechanism. It is a higher model over the previous 75 to 300mm interchangeable lens from Canon and should be ideal for nature lovers and sports enthusiasts because of the impressive autofocus response and superb blur reduction capabilities.

The canon 70-300mm EF IS f 4-5.6 USM provides one extra stop over its previous model ensuring that it does three stops slower. The shutter speeds can operate three times slower increasing exposure to the environment for longer without a perceptible increase in blurring. The result of this technology is that photographers will be able to take a shot at 1 by 500 seconds and it shall give the result of a shot at 1 by 60 seconds. This directly affects low light shooting.

Image stabilization for the Canon 70-300mm IS USM operates using tiny sensors called gyro gears. These gears are rigged to smaller lenses inside the camera lens that orient their direction against the movement of the camera hence correcting all those light rays that have deviated off their actual path onto the film and sensor. This IS system usually offers two modes for shooting. One corresponds to a stable object and the other to a moving object. The first mode will provide corrective movements for horizontal and vertical directions and the second one works only for the vertical direction. This system for image stabilization is rigged to automatically shut down when the camera is attached to a tripod thus ensuring zero redundancy.

This upgrade ensures that the AF works even faster and better. Thanks to a high-speed calibrated USM micro controller, the AF shutter manages to perform precision and accurate silent movements stopping exactly when required. Good torque ensures accurate AF stopping that provides a good focal point and prevents overshooting.

Because of its large size, the lens is prone to easy scratching of the surfaces. To ensure that something like this never happens it comes with a simple zoom lock setting that prevents the zoom ring from extending the lens. Thanks to this, you can either sling the camera around your neck or store it without worrying about scratches.

This upgrade from Canon will offer you a chance to click pictures of far off objects with the highest focus while the rest of background is blurred out. To make this happen it relies on a circular aperture based EMD device. EMD is short here for electromagnetic diaphragm, it comes with all wide-angle lenses.

Ghosting and flares are less prominent in this lens. It utilizes a special kind of spectra lens coating that by shaping lens elements detracts from the reflection on the sensors. What you get in return is a better image with crisper edges and balanced tone of colors.

A distance measurement chip inside the 0345B002 Canon lens directly communicates with an E-TTL II flash unit such that it can set up a perfect flash. Moreover, it is fully compatible with EOS 5D and EOS 1D models. This lens shall also hook up with the EX Speedlite series offering better flash and focus.




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