25th Street at Balmy Alley, SF.

Grunge conferred with Snapseed, an app which is sadly no longer available for OS X. When Google bought Nik Software, the maker, it retained only the mobile version.

Nikon D3x, 20mm UD Nikkor.

On 24th Street.

For some reason this reminds me of the works of the English painter of industrial scenes, L. S. Lowry.

Nikon D3x, 20mm UD Nikkor. My lens correction profile, used here with Lightroom 5 (LR3 and LR4 work also) negates any vignetting inherent in this lens.

On 24th Street.

Nikon D3x, 20mm UD Nikkor.

Off 24th Street.

San Francisco is a haven for all art genres, with the Mission District supreme in this regard.

Nikon D3x, 20mm UD Nikkor. Goodness, where has this mechanical and optical masterpiece been all my life?

On 24th Street.

Lovely late afternoon colors in the Mission District.

Nikon D3x, 20mm UD Nikkor.

Note the perfect correction of distortion through the use of my lens correction profile in Lightroom.