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gdanmitchell
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p.4 #1 · p.4 #1 · Fuji Zooms


RWNPhoto wrote:
Or that f/2.8 on crop is like f/4 on FF....



Oh, fun, here we go!

;-)
Sep 04, 2024 at 06:03 PM
gear-nut
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p.4 #2 · p.4 #2 · Fuji Zooms


Sigh.......

Yes it's true, f4 on Fx is about the same net DoF as f2.8 on APS-c, all else equal -- but the relative exposures are not So while you might "lose" some shallow DoF isolation capability with APS-c, you gain DoF for equivalent exposures; and frankly speaking for myself and the way I use my small camera most, the latter is beneficial far more often than the former. (Respect YMMV.)

In my case, when I want shallow DoF, I pull out my GFX and a couple adapted f1.4 lenses



Sep 04, 2024 at 06:24 PM
mdude85
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p.4 #3 · p.4 #3 · Fuji Zooms


gdanmitchell wrote:
Heh. Somehow I KNEW you were going to go there. ;-)

If you read carefully, I wrote in such a way that I avoided getting into the whole “f/4 on crop is like f/2.8 on FF” thing. When I bought mine it was because I wanted something like my Canon 24-70mm f/2.8L on the smaller system.


That's certainly fair. I looked at the Fuji 16-55 f2.8 because I wanted something like my Canon 24-105 f4 L on a smaller system.

(I ended up using the kit lens for a while, and then switched to the Sigma 18-50 f2.8).

Chasing optical excellence is one business strategy. I just don't think that's Fuji's vision, so that's why an optically excellent, very large lens in the Fuji system looks and feels a little clunky, and a little contradictory on a smaller sensor.

I think lenses that are made to be large and heavy for the purpose of light gathering are becoming obsolete in light of IBIS. I think these brands are making these ever-faster lenses because of better control over depth of field.
Sep 04, 2024 at 09:06 PM
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