Pornography and Masturbation: Are They Sins - Quick & Clear Bible Study

Is pornography a sin? How about masterbation? Are these things allowed for the believer or not?

Verses used in this study:
2 Timothy 2:22
Proverbs 3:5-8
1 Corinthians 7:2,5,8,9
Ephesians 4:17-20
1 Peter 4:1-5
1 Thessalonians 4:3-8
Prov 5:18-22, 6:23-28
Matthew 5:28
Matthew 15:19
Phil 4:8