>>3321053>>3321054My advice it to not shoot Portra because it is muddy brown trash.
If you must though, then shoot it at 400 and edit your scans to "look like portra".
ie: rolled off highlights, low saturation, raised blacks.
If you overexpose, as you would normally do with c41, you'll find your highlights just brick up.
I you try to extract shadow detail, you'll find you can't separate out the muddy shit colour it tends to, esp without turning everything else in the image cyan.
