Regretting buying this 14mm now that I got it

Started Feb 9, 2013 | Discussions thread
nixda
Senior MemberPosts: 1,909Gear list
Like?
Re: Regretting buying this 14mm now that I got it
In reply to peevee1, Feb 11, 2013

peevee1 wrote:

rattymouse wrote:

Al Valentino wrote:

14mm FOV is 89 degrees

18mm FOV is 76 degrees

89/76 = 17% wider

12mm is 99 degree FOV or about 30% wider

Hmmmm.....

(18-14)/18*100=22.5%

Why would the percent change in focal length not correlate to the percent change in FOV? Is the relationship not linear?

FoV as measured in degrees (and generally defined in angles, especially diagonally) is not very useful. What is useful is linear sizes of objects at a given distance which can fit within a frame, and that value is inversely proportional to focal length.

FoV is very useful for panorama shooters. It's one of the first things I consider in a wide-angle lens. All these parameters and descriptors have their place.

 nixda's gear list:nixda's gear list
Fujifilm X-E1 Fujifilm XF 14mm F2.8 R Fujifilm XF 18-55mm F2.8-4 R LM OIS Fujifilm XF 55-200mm F3.5-4.8 R LM OIS Fujifilm XF 27mm F2.8
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow