Here is one example.
305 coated 2/1 sharp. 55 speed
Round:
230 1:1 45 speed
200 1:1 37 speed yellow mesh
155 1:1 37 speed (white mesh)
110 1:1 27 speed
86. 1:1. 23 speed
The confusing part that we will always have, is that two different shops can use the same emulsion, coat the same number of times on the same mesh and even use the same side of the coater, yet have different exposure times. That reason is pretty much the difference of coating technique or (the people doing the costing). One can coat fast than another making the cost thicker or thinner yet still usable.
The way to truley emilinate that part is to use an auto coater. After that, you can really use someone else's numbers that has a coater also.
