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<blockquote data-quote="Whiskeyman" data-source="post: 476528" data-attributes="member: 13556">This isn't always the case.&nbsp; Lenses are designed for many things, and one of the characteristics of any particular lens design is the image circle.&nbsp; In many lenses designed for crop sensor applications, the image size isn't as large as the image circle of those designed for full-frame sensor.&nbsp; However, on some DX lenses, the image circle will cover most, if not all, of the FX sensor,&nbsp; albeit with typically poor image quality outside the center of the image, corresponding to the sensor size it was designed for.An exaggerated example of this would be the image circles of a particular focal length lenses for 35mm format and large format lenses.&nbsp; The designed image circle for a 300 mm lens designed for a 4&quot;x5&quot; or 8&quot;x10&quot; view camera has to be much greater than that of the lenses we use on our 35mm format size cameras.&nbsp; This is one of the factors that make the lenses for the larger format cameras more expensive.WM</blockquote>

[QUOTE="Whiskeyman, post: 476528, member: 13556"] This isn't always the case. Lenses are designed for many things, and one of the characteristics of any particular lens design is the image circle. In many lenses designed for crop sensor applications, the image size isn't as large as the image circle of those designed for full-frame sensor. However, on some DX lenses, the image circle will cover most, if not all, of the FX sensor, albeit with typically poor image quality outside the center of the image, corresponding to the sensor size it was designed for. An exaggerated example of this would be the image circles of a particular focal length lenses for 35mm format and large format lenses. The designed image circle for a 300 mm lens designed for a 4"x5" or 8"x10" view camera has to be much greater than that of the lenses we use on our 35mm format size cameras. This is one of the factors that make the lenses for the larger format cameras more expensive. WM [/QUOTE]

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