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Reviews (2)
17 July 2015
In general a decent entry-level kit zoom lens.
0 of 1 found this helpful Positive:
Decent range/wide (24 mm equivalent)
Precise auto focus
Internal focus
Non-rotating filter/hood
Good contrast
Negative:
Small aperture
Very soft corners
Heavy and inconsistent zoom action
Loud manual focus
Complex distortion at the wide end
Focus distance window difficult to read
Build is inferior to the 18-55 SAM II
This lens looks and feels like an older design than the mid 1990's Minolta AF 24-85 f/3.5-4.5 and 28-105 f/3.5-4.5 lenses. It is very similar in size and weight and covers the entire range of the older 28-105 with the addition of the 16-28 wide range. Unfortunately it doesn't perform anywhere near the 28-105 as far as image quality and ease of operation. The zoom action reminds me of the 1980's Minolta AF 28-135--very inconsistent and heavy. It seems to be both a much cheaper and a much more compromised lens design.
This is a slow lens even compared to the Sony DT 18-55 SAM II kit lens. The bulk of the lens seems to have used for attaining the wide 16 mm focal length. By 18 mm it is at a maximum aperture of f/4--slower than the cheaper kit lens, and at 24 mm it is already at f/4.5. At 35 mm it is at f/5--just like the 18-55 kit lens.
It does have better image quality on the wide end than the 18-55 SAM II lens--less barrel distortion than the 18-55 but more complex distortion. Most of the frame is sharper on the wide end compared to the 18-55 except the extreme corners. The corners are always soft at all focal lengths.
It has better contrast than the Minolta 24-85 but considerably softer corners. The auto focus of this lens is spot on in the center, while the Minolta 24-85 and the 18-55 SAM II back focus often. Similar image quality to the 28-105 at 105 mm, but considerably inferior to that lens in the rest of the range.
Retracted it is just slightly larger than the Minolta 28-105. It extends quite a bit further with two smaller diameter barrel tubes.
In general a decent entry-level kit zoom lens. Centered subjects will be sharp. It provides a decent quality 16 mm wide angle of view, but is never as good as the 18-55 is at 55 mm. The older Minolta 24-85 and 28-105 mid level lenses are consistently better options if you can give up the wide end of the range. Though those lenses do lack the built-in corrections on Sony cameras.
09 December 2016
A rebranded Kaxinda 50mm F2.4
This is a well-made, small, all-aluminum manual lens. The size is great on the small E mount bodies. It is a bit heavy with the fairly large front glass element and the all metal construction. The rear element is tiny compared to most cheap/fast 50 mm lenses. The size of the rear element is probably related to the strengths and weaknesses of this lens. Smaller elements should decrease aberrations but increase vignetting.
The lens has great central sharpness--even wide-open--but the left and right edges of the APS-C frame are darker and soft. There is a good amount of pincushion distortion which is also odd for a standard prime lens.
Compared to the Kaxinda 50mm F2.4, the smallest aperture number written on the aperture ring and the product packaging has been changed from "2.4" to "2.0", but the depth-of-field scale on the lens is still marked "2.4". The aperture appears to be much smaller than f/2.0. It certainly is not 25 mm in diameter which is f/2 or 50 mm / 2. It exposes wide-open like an f/2.8 lens with similar depth-of-field.
The minimum focus distance of 650 mm is quite long for a standard 50 mm prime lens.
The focus mechanism is smooth and nicely damped. Initially it was slightly gritty, but that mostly went away. The aperture mechanism is also smooth but heavily damped without any click stops. It still easy to change the aperture inadvertently. As already noted, the aperture values displayed on the ring seem to be inaccurate.
I directly compared this with an adapted Minolta MC Rokkor-X 45mm F2. The Rokkor lets in nearly a stop more light, is just as sharp in the center and is much sharper in the corners, and has very little distortion and no vignetting. The Rokkor, while slightly smaller without the adapter, is much larger when mounted with an adapter on an E mount body.
If you can get past the aperture size fudging and accept its actual limitations, the lens is a decent value.