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| p.5 #1 · 50 f/1.2 vs 50 f/1.4 - How much extra light? |
Old schoolers. like me, look at 1.4 and 1.2 and say 1/2 stop. Digi-togs call it 1/3. Tech specs vary by maker and within a maker. Light transmission, T stops, can also vary. Other specs also not specific. Many know that 70-200 is not always a true 70-200, and to Canon, 103-383, is referred to as 100-400.
This not like comparing 85 1.8 to the 100 2, like builds, 1/3 stop as stated difference. Similar build similar, but not the same, iq.
I agree with those before me that have stated two disparate lenses with much different iq, build, af abilities and oof rendering.
For me, like the 1.4, it is ok, love the 1.2, yet it has its own, and known, foibles.