Well according to the Fuji brochure for my year of 210mm lens, it seems its listed as being designed for 8x10 format. So even though the coverage is only 305mm, I guess they figure that is sufficient for 8x10 format. I just ordered a 180mm Fuji as well with the same coverage, so I guess Im set.
Fuji tends to be a bit over-optimistic with their image circles. And you have to distinguish between using a lens straight-on at very small stops, versus with a certain amount of tilt or rise etc, or perhaps medium apertures. I have idea how any Fuji 180 would even begin to realistically cover 8x10 unless you have misinterpreted some chart showing the 180 A-series at 1:1 ratio rather than at infinity. I dunno. You'd have to be more specific about your exact lens and intended usage. 305 is darn skimpy for 8x10 even if it does apply. Hopefully you've got an older 210 with lettering inside the rim, rather than on the outside of the barrel.
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