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<blockquote data-quote="§am" data-source="post: 102390" data-attributes="member: 9187">Thought this might be of use to someone.<a href="http://www.the-digital-picture.com/Reviews/Lens-Specifications.aspx?LensComp=0&amp;Lens=662&amp;Units=M" target="_blank">Lens Specifications and Measurements</a>It lists a whole host of specs and measurements for the given lens (you can compare two lenses at a time).What was most useful to me was the aperture info - what the aperture is for any given focal length.Most reviews, tech specs etc, only provide you with the extremes of the lens (e.g. 18-55mm f/3.5-5.6), but you don't know at what focal length the aperture changes.So using the 18-55mm as an example, I can look at the aperture info and see that e.g. at 28mm the aperture is f/4 and at 40mm onwards the aperture is f/5.6.Certainly very useful when looking at potential new lenses to see what aperture a focal length will give.</blockquote>

[QUOTE="§am, post: 102390, member: 9187"] Thought this might be of use to someone. [URL="http://www.the-digital-picture.com/Reviews/Lens-Specifications.aspx?LensComp=0&Lens=662&Units=M"]Lens Specifications and Measurements[/URL] It lists a whole host of specs and measurements for the given lens (you can compare two lenses at a time). What was most useful to me was the aperture info - what the aperture is for any given focal length. Most reviews, tech specs etc, only provide you with the extremes of the lens (e.g. 18-55mm f/3.5-5.6), but you don't know at what focal length the aperture changes. So using the 18-55mm as an example, I can look at the aperture info and see that e.g. at 28mm the aperture is f/4 and at 40mm onwards the aperture is f/5.6. Certainly very useful when looking at potential new lenses to see what aperture a focal length will give. [/QUOTE]

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