Category Why You Can't Optically Test Your Lens with Autofocus | Lensrentals Blog

How To's

Why You Can’t Optically Test Your Lens with Autofocus

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By far the most common email and PM I get basically says, “I think my lens is optically out of sorts. What do you think?” The second most common is, “So what’s the best way to optically test my lens without a ton of equipment.” Years ago I wrote an overly long post about testing […]

How To's

A Few Easy Lens Dustings

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I get asked about 15 times a week, “How can I get the dust out of my lens?” The right answer is you don’t. All lenses have dust in them and it doesn’t affect the images at all 99% of the time. Even if you clean it all out, it will be back after you […]

How To's

Zeiss 15mm Hood Removal

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This isn’t a general interest post. It’s simply answering a request for some people who want to remove the hood from their Zeiss 15mm lenses so they can cut the petals off and use filter holders. Obvious disclaimer applies – doing this voids every kind of warranty, is probably a bad idea, and we don’t […]

How To's

A Tilted Element Demonstration

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One thing we preach here a lot is that just because a dropped lens looks fine on the outside doesn’t mean it is fine. The other thing we preach a lot is that a tiny difference in the centering, tilt or placement of a single element can have a dramatic effect on image quality. Aaron made […]

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