Cloudfront max-age together with TTL usefull?

For a image gallery I use amazon cloudfront.

I have set at the origin:

Cache-Control:max-age=31536000 (1 Year)

1. Is it usefull to set the TTL 0 (24 hours) to 1 Year too when I have already set the max-age?

2. Will amazon check the file with TTL0 every 24 hours when I have set the max-age to 1 year?

Amazon is saying:

Objects are cached for the greater of the value of the Cache-Control max-age directive or the value of the CloudFront Minimum TTL

Amazon is also saying:

If an object in an edge location isn't frequently requested, CloudFront might evict the object—remove the object before its expiration date—to make room for objects that are more popular.

In that case, I think its usefull to set TTL to year, because the images will stay for sure and not before? Please correct me.

Thanks for clarification.