sharp photo looks blurred in photoshop cs6
i have a query i am wondering if anyone can help me with. when i bring a large photograph into photoshop cs6 that i took with my camera, it looks sharp as i captured it. however, when i have had the photo open for a period of time, i notice that the photograph appears to have become blurred. if i open the photo in a picture viewing program it looks its actual level of sharp. if i duplicate the photo and reduce the dimensions to a smaller size, the photo looks sharp again.
i have a feeling it isn't lack of computer performance because all of the settings are set to more than enough memory & other requirements.
i appreciate any help because with this problem, while working on a photo in photoshop, i'm not sure if the blurryness is just in PS or actually the photo.
thank you in advance
peter turner
