Category » Roger’s Corner

History of Photography

How Potatoes and Gelatin Created Color Photography

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Long ago, I wrote articles about the glory days of photography. The days when any photographer worth a damn dabbled in chemical explosives or Bitumen of Judea and spun off side gigs like Lionel toy trains or fashion clothing. Back then your competition didn’t dabble in stealing your photographs, they stole your patents and drank your milkshake. One of […]

Removing Fly from Lens

Geek Articles

Removing a Fly from ‘Weather Sealed’ Canon 70-200mm f/2.8L IS II

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I’ve been doing lens stuff for a long time now. Long time. Trust me; it’s hard to remain polite the 843,911th time some newbie goes into hysterics because there’s dust in their lens. Telling them it doesn’t matter a bit, and that all their other lenses have dust they just can’t see ( because different optics magnify […]

Best Compact Cameras

Equipment

What to Look at to Find the Best Compact Camera for You

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Why Point and Shoot Cameras? Well, duh, because I wanted to use one. I go to the beach once a month. I wanted something that took better pictures than my cell phone, doesn’t involve carrying a bunch of gear, and doesn’t include changing lenses in blowing sand. Since I don’t use this type of camera often, I […]

Equipment

Testing Lenses: Best Individual Focus MTF Curves

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OK, in the last post we did something useful, but rather boring: we looked at how MTF changes when lenses are stopped down. Today we’re going to use a more powerful optical bench tool, the MTF vs. Field vs. Focus. Unless you work in a metrology lab (and probably not even then, very few are performing […]

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