Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-07-2018, 01:36 PM   #16

Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 20,322
QuoteOriginally posted by Bob 256 Quote
I don't disagree with what you're saying. More pixels will contribute to the "dither" of the original single pixel space since the noise element in each is random, however the randomness from the actual value that pixel space should have is larger (higher signal noise) for each of the smaller pixels. I'd have to open my statistics book to see how these would combine, but I believe you are correct in saying that four pixels added (actually averaged) with more noise (and that noise won't be twice the single pixel noise) will contribute to a better image, both noise and resolution wise.

There does come a point however, where reduction in the size of the pixels so much starves each one for light, that performance will fall off considerably. I have no idea if modern cameras are at that point yet (apparently not since the K-1 is such a great performer).
I think the point is just that you have to compare images at the same viewing size and once you do that, the smaller pixels actually produce a better image because there is more detail. Certainly the image won't be worse.

The bigger problem you run into if you have sensors with super high megapixels is eventually you run into diffraction. So according to the diffraction calculator on Cambridge in Color, you would run into diffraction around an aperture of 4.5 with a 144 megapixel full frame sensor. But that is not related at all to the OPs question.


  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
canon, exposure, latitude, mark, photography, wedding
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Will less resolution provide better high iso performance? mattipuh Troubleshooting and Beginner Help 18 02-21-2016 06:44 PM
When less is less, more is more, and the Q is the Q! 6BQ5 Pentax Q 12 07-13-2015 10:35 AM
Cityscape Less and less people like it ZeljkoS Post Your Photos! 4 02-09-2015 08:15 AM
Less and less film stuff at my favorite store... KungPOW Pentax Film SLR Discussion 11 09-05-2009 11:15 AM
Night photography with K10D - High ISO short exposure VS Low ISO long exposure pw-pix Pentax DSLR Discussion 10 02-03-2008 01:37 AM

All times are GMT -7. The time now is 08:10 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]