How wide will the LEE Filter System go without vignetting?

There is no hard and fast answer to this, lens specs and designs change all the time, as do the filter holder requirements. However, as a rough guide, using a simple holder setup with 2 filter slots, and no lens shade a DSLR (small chip) will go down to 10mm. A 35mm & Full chip DSLR will go down to 16mm. A medium format 645 & 6×6 will go down to 35mm. A medium format 6×7 will go down to 45mm. A larger format 5×4 camera will go down to 70 – 90mm.

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