Category Disassembling the Lumix S Pro R70-200mm f/4 OIS

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Disassembling the Lumix S Pro R70-200mm f/4 OIS

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We’ve been impressed with most of the lenses that have come out for the L mount cameras but haven’t taken many of them apart. But as luck would have it, we have several Panasonic Lumix Pro 70-200mm f/4 OIS lenses needing repairs for autofocus issues. In the U. S., Panasonic doesn’t offer repair really, just […]

History of Lenses

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A Brief History of Early Lenses: Part 1

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We are all recent-centric. We tend to think the technology we use didn’t exist until last year or so, even though the roots of it go way back. Phone apps are a great example. I have a dozen little apps on that phone that do things like calculate depth of field…

Why Lens Manufacturers make Specific Lenses

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Why Manufacturers Make a Specific Camera Lens

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There is a lot of online discussion about why a manufacturer made this lens when they so obviously needed to make that other lens. Or why this manufacturer’s design is better than that manufacturer’s magical solutions. So, I thought I’d share the second-hand information I have about the process because it’s probably better than the made-up speculation I read online.

Geek Articles

Understanding the Difference in Global and Rolling Shutters

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When getting started on video, you may run into a common problem, with no easy explanation of what’s going on. During quick pans, your footage may look like jello, or when recording video of rotating objects, they may look like they’re rotating slower than they are, or not at all. These are all common problems […]

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