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| p.152 #8 · A7/A7r - performance with WA RF lenses |
Hey guys, not sure if anyone cares any more now that we know most wider RF lenses don't play so nicely on the a7/a7R.... but I finally got around to processing a 24-lens a7R vs. M9 infinity shootout I did a while back. 21 of the lenses were rangefinder with the majority being 50mm and wider, plus the two FE primes, and the RX1 thrown in for an added data point.
It's over on my site with links to high-rez files.
CV12, CV15, ZM18, 21 Lux, ZM21/2.8, 21 SEM, ZM25, 28 Cron, CV35/1.2 II, ZM35, Canon 35/2 LTM, RX1's 35/2 Sonnar, ZM35C, FE35, CV40, 50 Lux ASPH, Canon 50/1.4 LTM, CV50/1.5 LTM, ZM50C, ZM50P, FE55, CV75/1.8, ZM85/4, 90 Summarit.
Most lenses performed better or more 'naturally' on the M9. The widest decent non-native lens were the CV12 and 15 with very similar edge performance on both cameras, though both also have very strong vignetting and color shift. The CV35/1.2 II was the widest and least problematic. The 21 Lux also wasn't too bad, but lags in the outer zone until around f/5.6. The FE55 bests the other 50s for across frame consistency, though the Lux showed higher central performance while the ZM50P was decent, but seemingly a bit lower on the resolution scale. Everything longer than 50 was pretty much a draw, as would be expected...
Maybe a reason I didn't post it sooner was that it pretty much confirmed, upon initial inspection, that the a7/a7R weren't going to fill any immediate need for me, and I lost interest. I'm still excited about the prospects of this system and mirrorless full frame in general. But for the time being I will wait it out on the sideline as the system fills out. If anything, the RX1 is ever more appealing...
Hopefully someone still finds this useful!