Can some one tell me what caused this....

After the day was done and all 239 shots were downloaded to my digital darkroom as I was editing what to keep and what to toss out I came across this ....spot and it is only in these two shots of my wife , the racer, and my best bud, can anyone explain what I did because I dont have a clue, the lens was clean and it was only these two shots. Thank you, Dale

Well if it's only in a coupe of shots then it was probably a piece of dry dust that was blown onto..and off of..your lens.

I don't see any photos.

No pics for me either

lotta hits though.......

Don't see any photos, just like everyone else; but it could be sensor dust, even though it shows up on only a few photos. If they happened to have been shot against a bright background with small aperture, they would be more susceptible to visible dust than photos that you may have taken under other conditions.

Post the pix so we can have a look.