Electronic Shutter vs. E-First Shutter vs. Mech Shutter - different effects on exposure and bokeh

boogisha said:

boogisha said:

Additionally, Fuji X-T3 manual notes[1]:

boogisha said:

When using the electronic front-curtain shutter, note the following:

• Faster shutter speeds are more likely to result in uneven exposure and loss of resolution in out-of-focus areas of the frame.

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In conclusion, it might be good if Fuji would change their "EF+M+E" electronic front-curtain (EF) to mechanical (M) shutter automatic logic so the switch happens at least for shutter speeds faster than 1/1000 already (if not 1/500 as GFX 50s supposedly does already), and not only faster than 1/2000 as it currently works, as we see 1/2000 is already too much for electronic front-curtain shutter to handle without (very noticeably) degrading out-of-focus areas.

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Phil1 said:

What a clear demonstration of this effect! Many thanks!

Just as a matter of interest, did you use a range of apertures in making this series of shots or was the lens wide open for every shot?

If the former, did you see any effect of smaller apertures on the results?

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Truman Prevatt said:

boogisha said:

In conclusion, it might be good if Fuji would change their "EF+M+E" electronic front-curtain (EF) to mechanical (M) shutter automatic logic so the switch happens at least for shutter speeds faster than 1/1000 already (if not 1/500 as GFX 50s supposedly does already), and not only faster than 1/2000 as it currently works, as we see 1/2000 is already too much for electronic front-curtain shutter to handle without (very noticeably) degrading out-of-focus areas.

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Normally if one shoots at base ISO, this would not be an issue. I suppose on very bright days wide open it could happen. About the only time I shoot at <1/1000 is to stop action. I am often down in the range that EFC is better because it mitigates shutter shock. However, I think the evidence is pretty strong that the threshold for switching from EFC to MS should be at 1/500 to 1/750 instead of 1/2000.

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boogisha said:

Truman Prevatt said:

boogisha said:

In conclusion, it might be good if Fuji would change their "EF+M+E" electronic front-curtain (EF) to mechanical (M) shutter automatic logic so the switch happens at least for shutter speeds faster than 1/1000 already (if not 1/500 as GFX 50s supposedly does already), and not only faster than 1/2000 as it currently works, as we see 1/2000 is already too much for electronic front-curtain shutter to handle without (very noticeably) degrading out-of-focus areas.

Click to expand...

Normally if one shoots at base ISO, this would not be an issue. I suppose on very bright days wide open it could happen. About the only time I shoot at <1/1000 is to stop action. I am often down in the range that EFC is better because it mitigates shutter shock. However, I think the evidence is pretty strong that the threshold for switching from EFC to MS should be at 1/500 to 1/750 instead of 1/2000.

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Yeah, very shooting wide open at bright/sunny days is when I would expect this to happen - and also how I shoot for the most of the time, eh.

So far, having shutter type set to "EF+M+E" seemed as a "silver bullet", not needing to think about distortion/banding (E), shutter shock (M) or upper bound (EF) as shutter speed (for me) usually varies from as low as some 1/8 to as fast as 1/32000 - but now this throws a bit of a shade over it.

Still, it seems as an easy firmware fix, indeed, setting that EF(C) to M switch point from 1/2000 lower to at least 1/1000, or 1/500... or somewhere in between, not to delve into mechanical shutter shock territory.

Then "EF+M+E" could still be used as a "no brainer" setting for the most of the time, making a deliberate switch for very specific purposes only (like choosing fully electronic shutter for silent shooting).

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boogisha said:

Still, it seems as an easy firmware fix, indeed, setting that EF(C) to M switch point from 1/2000 lower to at least 1/1000, or 1/500... or somewhere in between, not to delve into mechanical shutter shock territory.

Then "EF+M+E" could still be used as a "no brainer" setting for the most of the time, making a deliberate switch for very specific purposes only (like choosing fully electronic shutter for silent shooting).

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Banhmimeo said:

I use a x-t3. EF M+E

In this case, the mechanic shutter is used until 1/8000 and above, the fuji automatically switch to electronic, right ?

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boogisha said:

Looking at in-camera menu, "SHOOTING SETTING [1/2] > SHUTTER TYPE[2]", for "EF+M+E", Fuji X-T3 says:

• EF works until 1/2000 sec.
• MS works when faster than 1/2000 sec.
• ES works when faster than 1/8000 sec.

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