Ayaskant Baral Posted August 18, 2014 Share Posted August 18, 2014 Hi all I am going to shoot a horror film with 5D mark iii & CP 2 lenses. Want to know about the IR sensitivity of mark iii sensor. Do I need IR filter while shooting day exterior? Which one is recomended between Tiffen and Schneider optics? Link to comment Share on other sites More sharing options...
Mark Dunn Posted August 18, 2014 Share Posted August 18, 2014 Do you mean UV? A conventional sensor doesn't have IR sensitivity. Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted August 18, 2014 Premium Member Share Posted August 18, 2014 What do you mean Mark? Sensitivity to IR pollution is a common problem with sensors, which shows up mainly when you use heavy ND filters that don't have extra IR filtering. All sensors have IR filtering but it's often not strong enough which is why this problem shows up with heavy ND filtering, where so much visible light is cut that a larger portion of the light that passes through is in the infrared range. As for the Canon 5D Mk.III, I don't know its particular quirks in terms of which IRND combo filters work best. Have you tried to Google this? There must be a Canon 5D filmmakers forum out there somewhere... 1 Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted August 18, 2014 Premium Member Share Posted August 18, 2014 Shane Hurlbut says that the Canon DSLR's don't need much or any extra IR filtering: http://www.hurlbutvisuals.com/blog/2010/02/filtration-beware-of-the-reaper-of-cheap-glass/ Art Adams shows that the Canon C300 is sensitive to far red, not infrared: http://provideocoalition.com/aadams/story/cameras_the_canon_c300_and_ir 1 Link to comment Share on other sites More sharing options...
Mark Dunn Posted August 18, 2014 Share Posted August 18, 2014 Sorry David, I'm very much expired, evidently, and the OP was talking about a still camera which is about as far as I get these days. It didn't happen with film. Link to comment Share on other sites More sharing options...
Ayaskant Baral Posted August 19, 2014 Author Share Posted August 19, 2014 Thanks a lot David. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now