Lens rentals tested the new Sony FE Planar T* 50mm f/1.4 ZA and came up with some very impressive results that include the 50mm Zeiss Planar having lower lens variation than the Sony 55mm F1.8 Sonnar T* FE ZA. The Planar is also better than the Otus in the center, while only falling a little behind the Otus around halfway to the center, which they provide an answer for
“One note about that ‘halfway sag’ for both of you who actually read the articles and don’t just look at the graphs. This may be an artifact of sensor cover glass. We are limited to a full mm cover glass increments when testing, so for Sony lenses we use 2mm, which is close, but not exactly the same optical thickness as what covers the sensor. (It’s probably about 0.25 thicker). We generally don’t think of a 0.25mm difference as significant for SLRs, but that may not be absolutely true with the short back-focus distance of the FE mount. In other words, the Sony lens may actually be a bit better than what we see here. Or they may not, we aren’t certain yet.”
It looks like Sony has released their first lens to punch way above its price point. I can’t wait to see how it compares to my Sumilux.