Hmm… settings look fine, but even that screenshot is well washed-out - i.sstatic.net/H5Bey1Oy.png Do you have any of the 'fancy; display settings enabled - True Tone, auto-brightness, night shift etc?

Default is to translate imports… which is why I asked what your settings were - I guess a screenshot would help.

Are you using 16-bit images? What type? What is your Colour Settings page set to in Ps?

I have jump back set to just one second on the Mac I use this feature on most frequently., but you\re right a one frame back would be more useful.

@osullic - thanks. A lot of those are very different from the Mac defaults.

This type of shot is one I'd be doing in full manual anyway. I've done very long exposure with my remote, but never tried in Auto, so i'm not really sure how I'd expect it to behave, tbh.

This should really just be a comment under Scotbb's answer, if anything - because his answer quite clearly explains this very thing.

It would need Canon experts to know if such is available for that camera, but my Nikon walkabout lens is an 18-300mm. Saves having to think about what to carry ;)

There's an 18-300mm DX which isn't half bad.

That doesn't seem to have the same issue, though - or does it when you view it?

Can you post a full .nef somewhere we can access it?

It's not a direct comparison, but in audio recording we're now up to 32-bit floating point, which opens up the dynamic rage to 'mind-boggling' compared to any smaller bit-range. It uses a lot more data, but audio processing is considerably less intensive than picture, so it can now be done even in hand-held recorders. Noise floor is no longer directly linked to signal strength. To match this you do need better mics, with lower self-noise. See Zoom's advertising blurb for a skim over the broad strokes - zoomcorp.com/en/us/news/…

It's worth about what they sell it for. Compare it to the pro lenses store.canon.co.uk/canon-50mm-lenses