Lens quality; does really improve performance at high iso speed?

Started Aug 29, 2011 | Discussions thread
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Edo-ardo
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Lens quality; does really improve performance at high iso speed?
Aug 29, 2011

How much does the quality of glass in a lens influence the ISO performance of the camera on the final image output?

I currently own a canon 500d with basic kit lens 18-55, and it often makes me realize how poorly it performs in low light / high ISO conditions.

Does upgrading to a better lens help limit noise, besides of course gaining in color contrast and improved sharpness?

Or eventually the problem, when dealing with high ISO speed and shadowy pix, lays in the camera sensor and processor capabilities, therefore suggesting I should sometime soon consider upgrading to a better model?

Thanks for your contributions and replies

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