Complete EXIF information about the image is found in Preview under the Menu "Tools"/"Show Inspector": select the second TAB (more Info) and then click on the "Exif" button. You will have everything Exif has to offer.
The information is available in iPhoto as well. Under the Photos menu, "Show Extended Photo Info" and make sure you click all the header switches to on... They are a little hard to see. (I just sent feedback to Apple about this design element being not user friendly) They are the darker gray on dark gray background triangles to the left of the headers. Those headers say "image," "File," "Location," "Camera," and "Exposure."
iPhoto allows you to modify the Exif information in a limited fashion.
I've had it with switching back and forth between Microsoft and Apple every four or five years. Gonna get 3 more GB of ram, Snow Leopard and hope this Mac Mini out lasts me.