mawz Offline Upload & Sell: Off
|
TheEmrys wrote:
This old myth just needs to die. They use two different, but both equally valid, measurements. Nikon and Canon use the REI standard, and Fuji (and a few others, I think all the m43 crowd) use SOS.It isn't nearly so drastic of a difference as ISO3200 to 2000. It probably was back in the XT1/Xpro1 days, due to the 16mp sensor as those weren't great high ISO sensors. I think I even remember that the XT1 needed longer exposures for the same ISO and aperture. But once the 24mp sensors came out, it really became more comparable.
It's not a myth. The difference exists. This thread is about converting from Nikon to Fuji, so calling out the fact that the ISO ratings are decidedly different should happen.
And yes, it is just about that drastic (that's a 2/3rd of a stop difference, which is decidedly less than the 16MP sensors gave, my X-T1 seems to be around 1 1/3 stops different from my D750, ISO 200 on the X-T1 is just a touch slower than ISO 100 on my D750)
Regardless of the fact both sides are using different standards, you will see this in practice. And Fuji has played with it a few times, there's almost zero EV difference metered between ISO160 on the bodies with that as a base and ISO 200 on the bodies with that as a base, and both are very close to matching ISO 100 on a Nikon or Canon (and on the 16MP bodies, it's more like ISO80, not 100)
It's also not necessarily a bad thing. The biggest complaint from many landscape shooters is the lack of an ISO 100 or lower native setting, but the reality is that you do actually have it, it's just labelled ISO160 or ISO200.
|