From PS3 Developer wiki
- The part number of this lens (and KES-450D) breaks the standard used by sony, usually lenses are "KES" and slides are "KEM"... but in CECH25xx models the sticker on the lens has the reference of the whole slide (and there is no part number in the sticker on the slide)
- 450D and 450E seems to be revisions derivated from 450
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