Collodion and wet Collodion process was not color sensitive as was the later emulsions. So a B&W image from the era may not be accurate to the color of the images from that time. The early silver gelatin emulsions of early films were not vary sensitive in the red end of the spectrum either and much of the early film emulsions were in the sensitivity range of 3200K, thus Super Pancro Press, type B was favored by landscape photographer such as Ansel Adams who intentionally did not correct the material to daylight illumination because the resulting images were more to his (their) liking for rendering in the band areas for B&W (Adams purchased vast quantities of Super Pancro Press, Type B as Kodak was fazing it out for the more color accurate red sensitive balanced B&W film emulsions.).

So, what was a modern emulsion that was close to Collodion films? Kodak Duplicating Film would be a good film example. It was blue sensitive, with a vary slight green sensitivity and no sensitivity in the red region. If you wanted to make an image that showed freckles strongly, this was the film for the job. It would display freckles so strongly that freckles that were not seen by normal illumination to a viewer were seen and in abundance. This is why old portraits of the time appear so 'ruddy' as to skin tone. The daylight speed of this film is stated by Kodak as about 8 to 12 ISO and that is quite accurate, a little more sensitive than Collodion emulsions of the time.

One last item, war photographer only traveled with large bodies of troops. Collodion is a necessary material for medical purposes of the time, so a photographers wagon was more desirable to capture and raid by both sides than any other supply. It was a dangerous profession to be in during war. Not to mention the volatile nature of the materials used in making the emulsions.





https://en.wikipedia.org/wiki/Collodion

While preparing to go to Belfair State Park I noted this Varied Thrush above me about 30 feet out. Raised my trusty Z9 with 600pF mounted and fired away.

When we returned that Thrush was hanging around still so I mounted my Z 70-200 and tried a few more.

The first two images are from my Z 70-200, the following three are from my 600pF. What do you think? Same pp very similar light and other conditions. Z70-200 allows for much lower ISOs-2000, f2.8 versus 10000, f6.3- so backgrounds look different. Different tree. Comments welcome!

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Far North of its usual range- Southern California and Mexico. Individuals have been photographed as far north as Alaska!

Taken at Tacoma's Point Defiance Zoo. This bird was Not on exhibit!

The flower this particular Hummer was so very interested in is a Baby Sage.

#2 through #7 is the same bird, same flower, different wing positions. Note the yellow pollen on his upper beak!

Z9, 500pF, 1/3200, f 5.6, ISO 2800. I like the look of the blurred wings.

Zoo visit was a bust. Few animals on display, too many women pushing strollers! Could not enter some venues due to the number of strollers blocking the way!

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