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Thread: Vignetting with 25mm c-mount lens graphed

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    Senior Member RichA's Avatar
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    Vignetting with 25mm c-mount lens graphed

    This is using Kodak's Sensor Studio software. Top graphs show 25mm Fuji lens at f1.4, bottom graphs at f8.0. To put it in perspective, at f1.4 vignetting is highly noticeable, but still correctable in software. At f8.0, it is virtually gone.


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    Member laptoprob's Avatar
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    Re: Vignetting with 25mm c-mount lens graphed

    Which c-mount is this? At infinity or closer focus? My Pentax definetely gets black corners at f5,6 and infinity. At closer focus the focal length (field of view) is slightly smaller, so vignetting is less and unsharp.
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    Senior Member RichA's Avatar
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    Re: Vignetting with 25mm c-mount lens graphed

    Quote Originally Posted by laptoprob View Post
    Which c-mount is this? At infinity or closer focus? My Pentax definetely gets black corners at f5,6 and infinity. At closer focus the focal length (field of view) is slightly smaller, so vignetting is less and unsharp.
    This is a Fuji 25mm f1.4. At infinity focus. The vignetting is dark, but not a sharp cut off. The 12.5mm f1.4 Cosmicar does cut off the edges of the image though.

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