Aurora Borealis over Selfoss, Iceland.  14 mm, F/2.8, ISO 800, 4 s exposure. 

Aroura Borealis over Selfoss, Iceland.  14 mm, F/2.8, ISO 800, 4 s exposure

Aroura Borealis over Selfoss, Iceland.  14 mm, F/2.8, ISO 800, 4 s exposure.

Gluggafoss waterfall, Iceland.  31 mm, F/22, ISO 100, 2 s exposure.

Gljufrafoss waterfall, Iceland.  24 mm, F/4, ISO 100, 1/40 s exposure.

Seljalandsfoss waterfall, Iceland.  24 mm, F/7.1, ISO 100, 1/200 s exposure.

View from behind Seljalandsfoss waterfall, Iceland.  14 mm, F/10, ISO 100, 1/400 s exposure.

Seljalandsfoss waterfall, Iceland, moving behind it. 24 mm, F/8, ISO 100, 1/250 s exposure.

Seljalandsfoss waterfall, Iceland.  24 mm, F/8, ISO 100, 1/250 s exposure.

Skogafoss waterfall, Iceland.  24 mm, F/9, ISO 100, 1/320 s exposure.

Skogafoss waterfall, Iceland.  32 mm, F/7.1, ISO 100, 1/200 s exposure.