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

Geek Articles

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

By

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 […]

Canon RF 100-500mm Teardown

New Items

The Secret of the Broken Element: A Canon RF 100-500mm f4.7-7.1 Teardown

By

In ancient times, the IS unit in Canon EF lenses was physically locked down, so the unit didn’t make rattling noises when the lens wasn’t powered up. Canon decided the lockdown was no longer necessary in modern times, so some RF lenses, like the Canon RF 100-500mm f/4.5-7.1, rattled when the lens wasn’t mounted to the […]

Taking Apart Canon R5

Equipment

Taking Apart the Canon EOS R5 Mirrorless Camera

By

Let’s get one thing out of the way in the first sentence. If you’re here to understand the mysteries of thermal flow in the Canon R5 I can tell you everything I know without doing a teardown: It’s small, it’s weather-sealed, and photo-body cameras have limited ability to get heat out of the camera. I am […]

Repairing the Fuji GFX100

Geek Articles

The Fujifilm GFX 100 vs Salt Water Teardown

By

So today is “Every Dark Cloud Has a Silver Lining Day.” The dark cloud involves a Fujinon GFX100 medium format camera that went out on rental, got used in a dive housing, and ‘suddenly died for no reason.’ Except on further investigation, well, maybe it got a little wet, but just a bit, but it […]

Lensrentals lens teardown Canon 600mm

Equipment

Taking Apart the Canon RF 600mm f/11 IS STM

By

Here I sit, the guy who gets poetic writing about tiny resolution differences in high-priced wide-aperture lenses, having just bought this lens. Its aperture is in the diffraction-softening range. The manufacturer’s (pronounced ‘better than reality’) MTF charts aren’t very good. So why did I buy this pig? Because it could fit a need, of course. Despite the religious […]

Follow on Feedly