You are reading a single comment by @dan531c and its replies.
Click here to read the full conversation.
dan531c-
If you have an optical viewfinder, then possibly your eyes.
Some info here https://www.talkphotography.co.uk/threads/photographing-solar-eclipse.580974/#post-6752882
peter_h
Make sure you double check the filters. ND filters are intended for the visible spectrum, but sunlight contains lots of UV/IR that the filters might not reduce.