Examples of Work Known to be Orthochromatic

[interneg]

Sellas's photos are astounding, and they have the sky with nicely rendered atmosphere.

The use of yellow filters ('screens' in the texts of the time) was heavily promoted from the time ortho plates began to appear in the marketplace in the early 1880's - and ortho films tend to allow for good definition between earth/ rock/ grass tones and sky/ cloud tones.

[Daniel Unkefer]

Layton Falls Comm Ortho by Nokton48, on Flickr

Sinar Norma 4x5 Ilford Commercial Ortho D76 Arista RC 8x10 #2 Multigrade Dev