Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-07-2009, 08:43 AM   #46
Senior Member
fadzil karim's Avatar

Join Date: Jan 2009
Location: Kuala Lumpur, Malaysia
Photos: Gallery
Posts: 128
I never read any review from Ken Rockwell.

02-07-2009, 10:07 AM - 1 Like   #47
Veteran Member
rparmar's Avatar

Join Date: Jan 2008
Photos: Gallery
Posts: 8,783
he's a bully... that's all

He is opinionated and stupid, which is a bad combination. His writing is child-like, his logic non-existent and biases absurd. He appeals to those who think that believing in yourself is all it takes to be right. I cannot imagine how many beginners have been set on the wrong track and had their money wasted after reading -- and believing -- his crap.
02-07-2009, 01:08 PM   #48
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,912
QuoteOriginally posted by Erik Quote
This is true. It is the reason, for instance, that K200D has a base ISO of 100 while the K100D has 200. Higher pixel density = lower base sensitivity. What that means is that all other things being equal (which they are in reality not) the K200D will be noisier at ISO 200 because it has to amplify the signal 2x, and in doing that it also inevitably amplifies the noise.
No, the D40 not "twice as sensitive to light". It has a different ISO range.
02-08-2009, 06:43 AM   #49
Veteran Member




Join Date: Nov 2008
Location: Umeň, Sweden
Posts: 755
Original Poster
QuoteOriginally posted by SpecialK Quote
No, the D40 not "twice as sensitive to light". It has a different ISO range.
A camera with a base ISO of 200 is "twice as sensitive to light" as a camera with a base ISO of 100. There's a full stop difference.

02-08-2009, 09:05 PM   #50
Veteran Member
arbutusq's Avatar

Join Date: Sep 2006
Location: Vancouver BC canada
Photos: Gallery
Posts: 380
QuoteOriginally posted by Erik Quote
A camera with a base ISO of 200 is "twice as sensitive to light" as a camera with a base ISO of 100. There's a full stop difference.
That is actually dependant on how noisy the sensor is at base ISO. If the one that shoots at 200 is noisier at base than the one that shoots at 100 as was the case with the Sony (used in Pentax) 6 mp chip versus the Canon 6 mp chip then no there is not a full stop difference. Whether this is true for all sensor resolutions I have no idea.
02-09-2009, 02:28 AM   #51
Veteran Member




Join Date: Nov 2008
Location: Umeň, Sweden
Posts: 755
Original Poster
QuoteOriginally posted by arbutusq Quote
That is actually dependant on how noisy the sensor is at base ISO. If the one that shoots at 200 is noisier at base than the one that shoots at 100 as was the case with the Sony (used in Pentax) 6 mp chip versus the Canon 6 mp chip then no there is not a full stop difference. Whether this is true for all sensor resolutions I have no idea.
You're right, of course, and that's why in my original post regarding this I said that this applies "all other things being equal" -- i.e. if every variable except sensor resolution can be left out of the equation, which is never the case in the real world, but anyway... What Ken says is true in a theoretical best-case scenario, at least.
Reply

Bookmarks
  • 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!
ken, pentax, pentax news, pentax rumors, pentax-m, reviews, smc
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ken Rockwell The film evangelist Lambda_drive Photographic Industry and Professionals 42 12-04-2011 01:24 PM
Ken Rockwell Facts sebberry General Talk 15 02-24-2010 12:16 AM
For Sale - Sold: Pentax gear for Canon gear pingflood Sold Items 13 01-23-2009 01:56 AM
Let's hope Ken Rockwell is right for once... JMS Pentax SLR Lens Discussion 2 04-04-2008 03:17 PM
Imaging Resource's SLR Gear Reviews Pentax bobrapp Pentax SLR Lens Discussion 1 03-08-2008 06:26 AM



All times are GMT -7. The time now is 11:35 PM. | 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