Without a fisheye lens, the widest lens I own for FF has a focal length of 28mm (the Pentax K 28/3.5). My experience with the Pentax DA 14/2.8 (for APS-C, 21mm equivalent) and the Samsung NX 16/2.4 (for APS-C, 24mm equivalent) has shown that I generally do not need such a wide angle. But sometimes there are tasks where an ultra wide angle lens (24mm or wider) could be useful.
I would prefer an old manual focus 20mm/24mm lens made for film cameras, but they are too expensive and the image quality is usually not very good. So I decided to buy a modern, inexpensive autofocus lens (for Sony FE). This is the Viltrox AF 20/2.8 FE.
It costs me about $110. And it is my second autofocus lens for Sony (after the Samyang AF 25/2.8).
The Viltrox AF 20/2.8 is quite compact (for 20mm) and light. The filter thread is 52mm.
The lens has 10 elements in 8 groups:
The aperture has 7 blades.
The maximum magnification is 0.17x (as mentioned, I didn't check it).
It comes with a removable hood (PL-56).
But in my opinion the hood is impractical and useless. So I removed it from the lens and don't use it at all.
Overall, it is a nice lens. It works well. The image quality is also good (as expected for a modern lens).
See also related notes:
- Viltrox AF 20/2.8: Firmware update (V1.1.2) (2024-11-16)
- My AF lenses for Sony FE (2024-10) (2024-10-07)
- Viltrox AF 20/2.8: Samples [1] - FF - f/2.8 (2024-09-08)
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