The Sony sắt 2/28 is a small and affordable fast prime for the Sony Alpha 7 series. Can it convince in the field as well as on paper? I have owned it for more than three years now and share my experience in this long-term review.
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Sample ImagesSpecificationsDiameter | 64 mm |
Length | 60 mm |
Filter Thread | 49 mm |
Weight | 200 g |
Max. Magnification | 1:6.6 |
Close Focusing Distance from the sensor | 0.29 m |
Number of aperture blades | 9 (rounded) |
Elements/ Groups | 9/8 |
The Sony fe 2/28 sells for $448 at amazon.com or B&H photo (affiliate links). If you purchase the lens through one of these affiliate-links I get a small compensation with no additional cost to lớn you.
Contents
Optical performanceFlare resistanceVignetting Other popular articlesBuild Quality
The fe 2/28 has a metal mount. The focusing ring và the lower part of the lens hull are made from aluminium.The upper part of the lens (a bit more shiny in the picture), the filter thread và the intestines are made from plastics.
This design looks quite nice but the softer aluminium easily attracts scratches of which my copy now has quite a few.The focusing ring feels very smooth but it offers enough resistance và it has zero play.
All in all I think the build chất lượng is okay but nothing lớn get excited about.
plastic at the front, metal at the backSize,Weight và HandlingMinolta MC 2/28 | Minolta MD 2.8/28 | Sony fe 2/28 | Canon nFD 1.4/50The lens is very small for a fast 28mm lens, above you see it besides a much bigger và heavier Minolta MC 2/28 & a still bigger Minolta 2.8/28. At 200g the lens is also the lightest 2/28mm lens I know of. The fe 2.8/35 is even shorter & lighter but also a stop slower.
Handling is quite good overall, the focusing ring is very wide & feels nice, the lens hood is just the right size: it protects the front lens effectively without adding too much bulk.
on my Alpha 7Manual FocusAs mentioned before the focusing ring feels nice, what I don’t like too much is the focus by wire implementation.
The problem here is that it matters how fast you turn the focusing ring, so if I turn it by 20 degrees very fast the focus changes from 29 centimet to infinity. If I turn it slowly it takes more than 360 degrees (one full turn) to change focus from the close focusing distance khổng lồ infinity. It also feels like there is a small lag between the moment when you turn the focusing ring và when the lens reacts.
Manual lenses where the focusing ring is coupled directly lớn the focusing helicoid are nicer và faster to use but with a little patience you can focus the fe 2/28 very precisely. So manual focus works okay but it isn’t very enjoyable (says a hardcore manual lens user).
AutofocusAF worked well & precise, it is one of the faster fe lenses. So you will be limited mostly by your camera. On my a7II the small Sony is quite responsive when there is enough light but it slows down noticeably in lower light. On the a7III I would expect excellent performance.
Xem thêm: Logistic Và Quản Lý Chuỗi Cung Ứng, Ngành Logistics Là Gì
Optical performanceBokeh
The sắt 2/28s bokeh is smooth for a wide-angle lens.
It is very smooth at short distances, still pretty good at portrait distances and more nervous at long distances.
great bokeh at a very short distancethe bokeh in the center is still very smooth but the corners deteriorate a littleAt this distance bokeh is good in the very center và okay outside of itScenario 1: Close Focus, semi demanding background
Further Analysis
Bokeh fringing is very noticeable at f/2 and f/2.8. Not a strength of this lens.Under some circumstances one can see some onion ring like structures in highlights.Thanks to lớn 9 rounded aperture blades bokeh circles stay pretty round stopped down.Cat eyes are pretty obvious at f/2 and at f/2.8 the shape of oof-highlights is still not very even.Flare resistanceThe Sony fe 2/28 shows good flare resistance in most scenarios but under more extreme scenarios some lenses perform better.
Vignetting
The Sony sắt 2/28 shows strong vignetting which is no surprise for such a small lens. My figures are what I measure in LR without any profile applied by me but it includes a forced correction of about 0.5 EV so the true figure is above 3 EV. I also see a little blue-shift towards the corners which has never been an issue in the field.
Aperture | Vignetting |
f/2 | 2.8 EV |
f/2.8 | 2.0 EV |
f/4 | 1.5 EV |
f/5.6 | 1.3 EV |
f/8 | 1.2 EV |
If you use the fe 2/28 wide open vignetting is easily noticeable.For most images it will actually have a positive effect on the image since it leads the attention away from the corners but there are applications lượt thích astro-photography where this becomes an issue. Vignetting also has a negative effect on bokeh.
Distortion
The Sony shows pretty severe barrel distortion và is clearly meant lớn be electronically corrected.
raw tệp tin straight from LR without any corrections | click for full resolutionIt is not so bad that I have noticed it in my landscape images, but if you shoot raw you will have to correct it for any image with a straight line in it & this will cost some resolution.
after distortion correction (+27 in LR). Notice the smaller field of viewThe lens is not a true 28mm lens, more lượt thích a 26mm lens so after distortion correction you have the field of view of a 28mm lens.
Sunstars
Coma
I was surprised by the pretty decent coma correction of the fe 2/28. It isn’t quite as good as the very best astro-lenses but still good enough to lớn take astro-images you can enlarge quite a bit.
Sharpness
f/2: Contrast is high from f/2. Sharpness high as well if you only look at the center.The midframe area is less sharp but still acceptable. The corners are softish but you won’t notice this at typical web resolutions.I think the lens performs a little worse at it’s shortest focusing distance, than at infinity.