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Panasonic Lumix G Vario 14-140mm f/3.5-5.6 ASPH. No issues with flare were encountered during testing and only a slight loss of contrast can be seen when shooting into the light at telephoto focal lengths.
#Objektiv test software#
The distortion pattern remains constant across the frame throughout the zoom range, which should make corrections in image editing software afterwards relatively easy to apply although the amount of distortion present is so low, it will rarely need correcting.
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At 14mm Imatest detected 0.978% barrel distortion, and at 140mm this decreases to 0.01%. Visually uniform illumination is achieved with the aperture stopped down by one stop from maximum throughout the zoom range.ĭistortion is extremely well controlled for such a superzoom lens. At 14mm the corners are 1.86 stops darker than the image centre at maximum aperture and at 140mm the corners are 1.58 stops darker. It can be cured in software.Īpochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.įalloff of illumination towards the edges of the frame is fairly well controlled throughout the zoom range. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. This amount of fringing may be visible in some situations, but is low enough not to cause too much concern.Ĭhromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Fringing is at its most prominent at 14mm, where it covers just short of 0.7 pixel widths. Simple.įor this review, the lens was tested on a Panasonic Lumix G3 using Imatest.įor a 10x zoom lens, chromatic aberrations are very well controlled throughout the zoom range. The taller the column, the better the lens performance. The scale on the left side is an indication of actual image resolution.
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Averaging them out gives the red weighted column. The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. In fact, this is one of the most consistent super-zoom lenses tested so far, as at 140mm, there is little to differentiate the performance here from that at other focal lengths. With the lens zoomed to 50mm, performance is much the same as at 14mm, with sharpness being excellent in the centre fo the frame and very good towards the edges. Stopping down improves sharpness slightly, but not by all that much, with similar performance being maintained until the lens is stopped down past f/11. Sharpness in the centre of the frame at 14mm and maximum aperture is already excellent, and the clarity toward the edges of the frame approaches very good levels. It allows sharp hand held images to be taken at shutters speeds as low as 1/20sec at 140mm, which is roughly four stops slower than the usual rule of thumb for sharp hand held images allows.
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The Power Optical Image Stabiliser is activated via a switch on the lens barrel.
#Objektiv test manual#
The manual focus ring is smooth to operate and well damped, which makes applying fine adjustments a pleasure. Autofocus is very quick in good light, only struggling slightly in darker conditions. The zoom action is smooth, not tightening at any point in the zoom range and zoom creep isn't an issue.įocusing is performed internally, so the 58mm filter thread does not rotate, making this lens ideal for use with graduated and polarising filters. Much like its predecessor, this lens doubles in length as it is zoomed to maximum telephoto. The lens balances well with the Panasonic Lumix G3 used for testing. High quality plastics finished with a gun-metal effect have been used for much of the lens barrel and a metal lens mount adds to the overall robustness. Weighing only 265g, this lens is quite lightweight and compact, especially for a 10x zoom. Panasonic Lumix G Vario 14-140mm f/3.5-5.6 Handling and Features Choose used and get affordable access to kit that doesn’t cost the earth. Every month, visual storytellers sell more than 20,000 cameras and lenses to MPB. MPB puts photo and video kit into more hands, more sustainably.