that's what scoop wants to do with the flickr capture

Is "scoop" some Apple program?

I don't use mac, but here is an idea: maybe what "flickr capture" does is screen-capture your photos, as loaded by iphoto into a small viewing window?

At any rate, I hope the Apple users here suggest you some good image-editing program, so that you control what's re-sized not FlickrExport/iphoto.

_{*Lunatic*, n.
One whose delusions are out of fashion.}