Focal lengh calculation due to cropping

Started Jan 12, 2012 | Discussions thread
ForumParentFirstPreviousNextNext unread
Flat view
paipel
Forum MemberPosts: 54Gear list
Like?
Focal lengh calculation due to cropping
Jan 12, 2012

Hello,

I wanted to know, if somebody could help me with a calculation - rule?
So, I have a 9 mio pixel photo with appr. 112 mm focal lens (on 35mm base).

So how much more zoom/focal lengh would this give, if I make a crop whre there stays 6, 4, 2 mio pixels for example. Are there any calculation rules?

ForumParentFirstPreviousNextNext unread
Flat view
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow