> Careful! NEVER look straight at the sun without an approved solar
> filter!
> There's lots of IR and UV radiation in solar light, and you don't know if
> general-purpose ND filters block these or not. Even if the image looks dim
> enough, the IR and UV can still cause eye damage.
>> I think if you add two ND8 filter to the lens, that would be okay
>> to your eyes.
Kenko (parent company of Tokina) calls their solar filter "ND400".
Maybe two ND8 filters are not enough?
kazuya matsumoto
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