The way I see it, the biggest difference with the A9iii is the lack of iso 100. This means the camera is less well suited to subjects with the highest maximum dynamic range requirements like landscape photography
Regarding the megapixel difference, in the real world it corresponds to under 1.1x of extra cropping capability for the A1. This is the difference between 70mm and 77mm. It’s not huge. Just frame more tightly with the A9iii and the results will be as good.
Global shutter is a game changer when it comes to not having to care about banding. This unlocks all shutter speeds in all situations, rather than having to use specific shutter speeds to fight banding but may not be suited to the subject at hand.
Global shutter is great for flash photography because we can just set the shutter speed 3 stops higher:
The alternative is to use a 3 stop ND and carry around a 3 stops more powerful strobe to cut through the said ND.
This means a 75ws speedlight with global shutter can potentially do the job of a 600ws strobe (3 stop difference).
Unfortunately only Sony flash units can calculate the required offsets automatically for the flash to work.
120fps is also a big deal in specific situations but It would be nice if the buffer were bigger to support 4-5s of 120fps. As it is it’s more reasonable to use 60fps due to buffer concerns
The way I see it, the biggest difference with the A9iii is the lack of iso 100. This means the camera is less well suited to subjects with the highest maximum dynamic range requirements like landscape photography
Regarding the megapixel difference, in the real world it corresponds to under 1.1x of extra cropping capability for the A1. This is the difference between 70mm and 77mm. It’s not huge. Just frame more tightly with the A9iii and the results will be as good.
Global shutter is a game changer when it comes to not having to care about banding. This unlocks all shutter speeds in all situations, rather than having to use specific shutter speeds to fight banding but may not be suited to the subject at hand.
Global shutter is great for flash photography because we can just set the shutter speed 3 stops higher rather than use a 3 stop ND and have to carry around an enormous strobe 3 stops more powerful to cut through the said ND.
This means a 75ws speedlight can potentially do the job of a 600ws strobe (3 stop difference). Unfortunately only Sony flash units can calculate the required offsets automatically for now
120fps is also a big deal in specific situations but It would be nice if the buffer were bigger to support 4-5s of 120fps. As it is it’s more reasonable to use 60fps due to buffer concerns
Aug 09, 2025 at 01:16 AM
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