3 KEYS TO IM­AGE QUAL­ITY

HWM (Malaysia) - - LAB TEST -

It’s not all about me­gapix­els. There are three es­sen­tial keys to pro­duc­ing good im­age qual­ity in a dig­i­tal cam­era the lens, the im­age sen­sor and the im­age pro­ces­sor.

1 LENS

Hav­ing a good qual­ity lens is like hav­ing prop­erly tted spec­ta­cles do it right and ev­ery­thing looks sharp, do it badly and ev­ery­thing looks o . A good lens does more than just get sub­jects look­ing sharp across the en­tire im­age it also trans­mits ac­cu­rate color and re­duces ar­ti­facts such as are and dis­tor­tion.

2 IM­AGE SEN­SOR

As out­lined in the main story, it’s not just about size or the me­gapix­els, even though each plays a part it’s also about the tech­nol­ogy be­hind the sen­sor. For ex­am­ple, most im­age sen­sors to­day use a ayer color lter with al­ter­nat­ing rows of red green and green blue lters to cre­ate a color im­age.

How­ever, FUJIFILM has a unique X-Trans sen­sor, which uses a more ran­dom ar­range­ment of RGB pix­els than usual. Be­cause of that, the sen­sor es­chews the need for the op­ti­cal low-pass lter found in most dig­i­tal cam­eras, and can cap­ture ner de­tail as a re­sult. Other tech­nolo­gies, like back­side-il­lu­mi­nated (BSI) sen­sors have im­proved low-light per­for­mance, while emerg­ing ones like FUJIFILM and Pana­sonic’s or­ganic sen­sor prom­ise to push per­for­mance fur­ther.

3 IM­AGE PRO­CESS­ING

Im­age pro­cess­ing can also help to en­hance or de­grade the nal pic­ture you get. A raw, un­pro­cessed im­age from the sen­sor can look rather at, most con­sumer cam­eras will add con­trast and color sat­u­ra­tion to taste, while re­duc­ing the ap­pear­ance of im­age noise, and present the nal re­sult to the user.

If the pro­ces­sor does it with nesse, then you get a good-look­ing pic­ture, but if the pro­ces­sor is tuned too ag­gres­sively, then you end up with overly-pro­cessed pic­tures that might look too gar­ish or have de­tails smoothed over.

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