Colored filters enhance lunar details by improving contrast and reducing glare. Different colored filters highlight various features; yellow and blue filters are particularly useful. Neutral-density ...

(Santa Barbara, Calif.) - For the first time, a team of international researchers has found a way to view the accretion disks surrounding black holes and verify that their true electromagnetic spectra ...

I am traveling to Arizona for a two week vacation and thought it would be a great opportunity to play with some filters on my D300.<BR><BR>My kit is:<BR>Nikkor 18-200 VR<BR>Sigma 10-20<BR>Nikkor 50mm ...

For outdoor photography, a polarizing filter is an important accessory. Without one, a picture can look flat and soft with muted colors — and it might have "hot spots" caused by glare. The effect of a ...

Neutral density (ND) filters are a requirement for shooting smooth video in bright light, and circular polarizing (CPL) filters are often needed to improve contrast or darken a bright sky — but what ...