Category Quick MTF of the Tokina 24-70 f/2.8 PRO Fx | Lensrentals Blog

Equipment

Quick MTF of the Tokina 24-70 f/2.8 PRO Fx

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Courtesy Tokina, USA Tokina is releasing a new competitor in the 24-70mm f/2.8 standard zoom lens group. It’s a reasonably sized lens, having an 82mm diameter front ring, measuring 4.25 inches long, and weighing 2.2 pounds. That’s just a bit smaller and lighter than the Tamron 24-70mm f/2.8 VC USD or Canon 24-70mm f/2.8 Mk […]

Equipment

A Quick Look at the New Sigma 24-35 f/2 Art

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Image Courtesy Sigma USA   I generally do MTF testing on multiple copies of a given lens so that I can present the averages, look at sample variation, and stuff like that. I’m always aware that looking at any single copy of a lens, especially a zoom lens, gives only a limited prediction of how […]

Resolution Tests

Variation Measurement for 50mm SLR Lenses

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Last week we posted an introductory article on how we measure copy-to-copy variation in different lenses. I’ll be continuing to publish these results over the next few weeks for prime lenses. We will eventually have a database put up, but I think it’s important to look at the different lenses in smaller groups, illustrating some […]

Lensrentals News and Alerts

Save 20% This Summer!

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Beginning on Monday: It’s our longest and largest summer promotion ever! Get 20% off all orders arriving through the end of August. The Nuts & Bolts Eligible arrival dates are July 13th – August 31st Must use the code SUMMER20 Not combinable with any other offers Discount applies to rental fees only, and does not […]

Equipment

Measuring Lens Variance

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Warning: This is a Geek Level 3 article. If you aren’t into that kind of thing, go take some pictures. I’ve been writing and discussing the copy-to-copy variation that inevitably occurs in lenses since 2008. (1,2,3,4) Many people don’t want to hear about it. Manufacturers don’t want to acknowledge some of their lenses aren’t quite as […]

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