Go Back   Steve's Digicams Forums > Digicam Help > General Discussion

Reply
 
Thread Tools Search this Thread
Old Dec 31, 2006, 8:18 AM   #1
Junior Member
 
Join Date: Dec 2006
Posts: 3
Default

is there a big difference in pictures with an 8mp as opposed to 10mp. thinking of getting A640 or 630
shotz216 is offline   Reply With Quote
Sponsored Links
Old Dec 31, 2006, 9:10 AM   #2
Senior Member
 
Join Date: Mar 2005
Posts: 1,870
Default

Yes, if the 10 mp camera has the same size sensor as the 8 mp camera (as in the case of the A630 vs. A640), then the camera with 10 mp will normally exhibit more noise in low light situations. There would be no real favorable improvement in picture quality between 8 and 10 mp - not that you could see, anyway. For most people, 4-5 mp is more than enough. Here's an example of a comparison between a 10 mp camera and a 6 mp camera taken at ISO 800...

http://www.dpreview.com/reviews/canona640/page14.asp

Shouldn't the 10 mp camera have a clearer picture?

Hope I cleared that up for you.

the Hun


rinniethehun is offline   Reply With Quote
Old Dec 31, 2006, 9:14 AM   #3
Senior Member
 
Join Date: Jul 2006
Posts: 183
Default

shotz216 wrote:
Quote:
is there a big difference in pictures with an 8mp as opposed to 10mp. thinking of getting A640 or 630
Depends on numerous factors. Two important ones are 1) how large a print are you going to make? Obviously the larger the image to more digital info you want (especially if cropping). If you're just making 4x6's I think the point is moot. 2) Consider the optics (i.e., the lens). I'd rather have 8MP on a sharp lens than 10MP on a soft one.


stowaway7 is offline   Reply With Quote
Old Dec 31, 2006, 9:52 AM   #4
Senior Member
 
BillDrew's Avatar
 
Join Date: Jun 2002
Location: Hay River Township, WI
Posts: 2,512
Default

All else equal (it never is), the largest size print that can be made increases in linear dimension by the square root of the ratio of pixels. In this case, there would be an 11.8% increase in size. Nice to have, but not enough to get excited about.

In almost all cases, other difference between the cameras will be much more important than the difference in pixel count.
BillDrew is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 6:00 AM.