Europe • Great Britain
| James Clerk Maxwell demonstrates that by using three filters of the primary colors (red, green and blue) a full color image can be projected. This is the foundation of the additive process. |
Europe • Italian states
| Eugène Sevaistre uses a stereoscopic camera to obtain a faster exposure during the siege of Gaeta (near Naples) during the war between the King of Naples, Francesco II Borbone and the Kingdom of Sardinia. |
North America • USA
| Carleton E. Watkins makes his first trip to Yosemite Valley in California with a 100 mammoth glass plate negatives. Each plate weighs 4 lbs and is approximately 18 x 22 inches and captures the grandeur with remarkable fidelity. During the trip he takes 30 mammoth plates and one hundred stereoscopic negatives. |
| North America • USA | The earliest two patent applications for a photo album in the US were by F.R. Grumel, Geneva, Switzerland on May 14 1861 followed by H.T. Anthony (of E. & H.T. Anthony) and Frank Phoebus with another application for an album on May 28th 1861. (14 May 1861) |
LuminousLint 
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