Sony DT 18-55mm SAM
Sony 18-55mm (55mm filters, 7.5 oz./210g, about $200, often kitted with Sony cameras like the Sony A55). bigger. This free website's biggest source of support is when you use these links, especially these directly to it at Adorama or at Amazon, when you get anything, regardless of the country in which you live. See also all the kits with the A55V or A55, as well as the various kits with the A33. Thank you! Ken.
It has mediocre performance, but more than good enough for the casual use it's likely to see from the people who actually will buy it. It is not as good as Nikon's outwardly similar 18-55mm f/3.5-5.6 or Canon's 18-55mm f/3.5-5.6 lenses, which is odd, because they share what look like similar performance in other regards. Maybe I got a bad sample of this Sony lens — but then maybe you would, too.
Rear, Sony 18-55mm. bigger.
Note Sony's clever use of an orange band on the rear mount to distract potential buyers from noticing the disposable plastic lens mount.
Barrel Bottom, Sony 18-55mm. bigger.
Sony adds the letters SAM DT to this lens' name. They probably mean something about the AF motor and the fact this lens only works on1.5x sensor cameras, and not full-frame.
8 elements in 7 groups.
2 aspheric elements.
Pumper zoom: front group moves in and out as zoomed.
18-55mm, which gives the same angles-of-view on 1.5x sensor cameras as a 28-85mm lens would give on 35mm and full-frame cameras.
0.82ft (0.25m), rated.
Moves with zooming and rotates with focus.
Front, Sony 18-55mm at f/22. bigger.
7 blades, stopping down to f/22-36.
2-3/4" x 2-3/4" (69.5 x 69mm), rated.
7.5 oz. (210g), rated.
It's usually sharp in the center, where it matters.
At 18mm, it's soft on the sides at most apertures.
At 28mm, it's sharp throughout the image.
At 55mm, it's soft everywhere wide-open at f/5.6, and improves at f/11.
It has a load of barrel distortion at 18mm (use +5 in Photoshop's Lens Correction filter to correct.) The distortion goes away as zoomed to 55mm, at which focal length it has no distortion.
It is relatively free from lateral color fringes, except at 18mm.
I wouldn't buy one of these things.
I'd rather shoot with an old Minolta MAXXUM 50mm f/1.7, which has much better optical performance, is completely compatible with Sony DSLRs, including full-frame, and sells for about $75 used at eBay.
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