วันศุกร์ที่ 24 มิถุนายน พ.ศ. 2554

Canon PowerShot SX210 Lens Quality

Canon PowerShot SX210 Lens Quality


Wide: Sharp at center

Wide: Softest in lower right corner
Tele: Sharper at center

Tele: Quite soft, upper left corner

Sharpness: The wide-angle end of the Canon SX210's zoom is fairly sharp from center to corner in all but the lower right corner, which is quite soft. The telephoto end shows stronger blurring in the corners, which extends a little further in toward center than we typically like to see.

Wide: Moderate barrel distortion; only slightly noticeable
Tele: Moderate pincushion distortion, slightly noticeable
Geometric Distortion: Barrel distortion at the Canon SX210's wide-angle setting is moderate (0.4%), as is pincushion distortion (0.2%) at telephoto. In both cases, the distortion is mild enough that it doesn't detract too much from the overall image.

Wide: Bright
Tele: Strong
Chromatic Aberration: Chromatic aberration at wide-angle is quite bright, with strong green and purplish pixels glowing along either side of the target lines. At telephoto, the distortion is again strong and quite visible, though somewhat intensified by strong blurring in the corners of the frame. This is not unusual, though, for a lens with a 14x zoom range.

Macro
Macro with Flash
Macro: The Canon PowerShot SX210 IS' Macro mode captures fairly sharp details at the center of the frame, though blurring is strong around a wide perimeter of the frame (enough that the edge of the brooch looks like it's behind a glass of water). Minimum coverage area is 2.74 x 2.05 inches (70 x 52mm). Flash coverage is quite uneven, with the lower right corner in total darkness and a strong hot spot in the top left. External lighting will be your best bet with close-ups like this.

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