first post...critique

I know this image isnt so great. The focus is off I know, I'm looking for info basically
photo information
Nikon D70s (normal mode, medium size, manual focus)
f5.6, 1/125, 300mm, 800iso
My main concern is the color balance of the photo seems off, badly. This was my first outing with my new D70s and I'm trying to figure things out still. I've used a canon rebel film SLR through my studies (I have an A.A.S. in graphic design) and just now upgraded to the digital SLR
anyway, here are my photos...
example 1:
original image, resized
example 2:
resized, color corrected, levels adjusted
location was in Donaldsonville, LA on 2-19-6. Conditions were horrible. Heavily overcast, cold, and couldnt get too close on the track so had to use 300mm zoom. I debated switching the ISO to a higher setting but didnt wanna lose what little bit of crispness (which isnt in this photo, haha) that I could achieve at an 800iso.
Please critique. Ask questions if needed and I will answer the best I can. I'm looking to learn.
photo information
Nikon D70s (normal mode, medium size, manual focus)
f5.6, 1/125, 300mm, 800iso
My main concern is the color balance of the photo seems off, badly. This was my first outing with my new D70s and I'm trying to figure things out still. I've used a canon rebel film SLR through my studies (I have an A.A.S. in graphic design) and just now upgraded to the digital SLR
anyway, here are my photos...
example 1:
original image, resized

example 2:
resized, color corrected, levels adjusted

location was in Donaldsonville, LA on 2-19-6. Conditions were horrible. Heavily overcast, cold, and couldnt get too close on the track so had to use 300mm zoom. I debated switching the ISO to a higher setting but didnt wanna lose what little bit of crispness (which isnt in this photo, haha) that I could achieve at an 800iso.
Please critique. Ask questions if needed and I will answer the best I can. I'm looking to learn.