Gun Battery mount: Fort Point under Golden Gate Bridge

This is a long-abandoned cannon mount in Fort Point, under the San

Francisco anchorage of the Golden Gate Bridge. The room was very

nearly dark, so my exposure was several minutes with Provia 100 in

the 4X5 camera. The photo was scanned and digitally processed to

highlight certain area in original color and others in monochrome.

I like the photo, but I'm not sure about the selective desaturation. I actually think it detracts from my appreciation of the range of tones here. Maybe if the transition between the two was less abrupt? Or just partial desaturation of the whole image?

I think that anyone with the patience and skill to use a 4x5 camera should have the sense to not use cheesy effects.

I don't like the monochrome/color mix, but I have to

hand it to you getting such a good exposure at this

location (I have tried and had pretty bad results at

Fort Point).