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Roger Cicala – The Camera Forum®
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Author: Roger Cicala

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Canon 35mm Mk II f/1.4 Teardown

As soon as we optically tested the Canon 35mm Mk II f/1.4 lens we couldn't wait to tear into one for a couple of reasons. One was that Canon has been making a lot of interesting advances in lens mechanics lately, so we're always excited to look inside their...

As soon as we optically test...

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Canon 5DS Teardown

When Lensrentals.com first got the first Canon 5Ds and 5D sr cameras in stock, Aaron and I immediately started screaming that we wanted to take one apart. It turns out we received enough 5Ds cameras to let us have a day with one to do just that. Of course, we don't...

When Lensrentals.com first got...

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Sony 24-70 f/4 Teardown

Those of you who read our teardowns know that we commonly are tearing down Canon or Nikon mount lenses. The reasons are pretty simple and it basically comes down to the fact that we have a lot more of those lenses. If we have a...

Those of you who read our tear...

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How To Test For A Decentered Lens

What is Decentering and What Does it Do? Strictly speaking, decentering would involve one or more of the lens elements being off of the central axis of the lens. This would prevent the curved surfaces of the lens from bending the light properly. In severe cases...

What is Decentering and What...

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