Hi guys. I'm a Nikon D90 user and am new to Mac. I have a problem; which is I shoot in RAW format file. However, whenever I transfer my photos into the 'Iphoto' to post process it, my photos will automatically change to the .jpg format. Why is this so? Is there any way to prevent this? I tried 'googling' the matter however couldn't really find a definite answer.
Hope ya peeps can help me out to resolve this.