this also makes it the most predictable and amenable to sharpening using a true deblurring filter and not just an unsharp mask.
Herb.... ----- Original Message ----- From: "Rob Studdert" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, July 09, 2004 6:45 PM Subject: Re: *istD anti-aliasing? > The *ist D seems to employ an optical anti-aliasing filter which has a band- > width that was chose to make absolutely sure that no spatial frequencies above > the cut off response of the sensor are allows to hit it's surface. This is > precisely why it looks softer than the other cameras on the market but it's > also the reason that the colour is most pure (especially at small detail) and > the moir� effects are the least prevalent. > > Hence the nice smooth (predictable) transition to 50% gray at the highest > optical frequencies when shooting high contrast test targets.
