schlotz wrote:
For me, any upgrade decision will come down to a few key factors. Internal/external zoom, Af acquisition speed in low light, breathing, and resulting IQ. The presumed fixed ƒ4.5 is an unknown which at the moment is steering me towards a try before you buy scenario. Once the real specs are revealed hopefully we'll get a clearer picture of what to expect.
An internal zoom would make it an instant buy for me; although, the rumor site didn’t mention additional length over the current lens, which likely makes such doubtful. The current 100-400mm that I had (best of 3 copies I tested) barely tolerated x1.4 converters, IMHO. The new lens, with f4.5 and expected better IQ, might better tolerate converters, which would make it highly versatile.
schlotz wrote:
For me, any upgrade decision will come down to a few key factors. Internal/external zoom, Af acquisition speed in low light, breathing, and resulting IQ. The presumed fixed ƒ4.5 is an unknown which at the moment is steering me towards a try before you buy scenario. Once the real specs are revealed hopefully we'll get a clearer picture of what to expect.
An internal zoom would make it an instant buy for me; although, the rumor site didn’t mention additional length over the current lens, which likely makes such doubtful. The current 100-400mm that I had barely tolerated x1.4 converters, IMHO. The new lens, with f4.5 and expected better IQ, might better tolerate converters, which would make it highly versatile.
Now, if Sony would just make it a black lens….
Apr 21, 2026 at 05:42 AM
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