Testing...

Details:
4x5 Daguerreotype
Iodine: Strong gold-yellow, 50 seconds
Bromine: 10 to 120 seconds
Second Iodine: 20 seconds
Exposure: 3:20 @ f11 (13ev)
Development: 4:30 @ 70˚C

I further diluted my bromine water to 1:200, extending my fuming times into a reasonable range. The test nicely shows how too much bromine (120 seconds) effects the image.