Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 1 of 1 Search:
Forum: Pentax DSLR Discussion 03-13-2017, 10:29 PM  
understanding the 1.5 crop factor
Posted By filoxophy
Replies: 37
Views: 4,674
For what it's worth (not much), the K and M42 mounts have a 45.46mm registration distance.

The reason for the 43mm lens focal length is its near-equivalence to the film/sensor diagonal (a proxy for "normal" focal length across formats).

But yes I agree that certain focal lengths are easier to design for specific registration distances.
Search took 0.00 seconds | Showing results 1 to 1 of 1

 
Forum Jump


All times are GMT -7. The time now is 04:42 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top