UP C45AH 8132Linwood KS Linwood

Looks quite futuristic:) But why are you using such high ISO on sunny day??

The big radiator section above the rear headlight is necessary to keep the hotter-running engine cool (per US EPA emissions-reductuction requirements). Apparently, engines that run hotter tend to burn off more of the pollutants in diesel fuel, producing cleaner exhaust and suchlike.
As to the high ISO setting; I use it because I can! Image quality does not seem to suffer, and I can use higher shutter speeds and f-stops, reducing the effects of camera shake and improving depth-of-field, respectively. I remember using Kodachrome 64 film and being lucky to shoot 250 at f8 on a sunny day. No more is that a problem! Digital is very forgiving with exposure, too, quite the opposite of Kodachrome, which was very finicky and spiteful.

But keep in mind that bigger f-stops means diffraction, for example I never use f-stop over f8. Also I find VR quite effective with newer lenses, so I can shoot with lower shutter speeds with tele-lens. But it comes down to your personal preference of course!

Agreed. I usually do not exceed f11, but do like to control shutter speeds manually to be as high as possible, so sometimes the f-stop can go higher or lower if I'm not paying attention. With the VR lenses, and fast shutter, I can shake like a paint mixer and still get a decent image