View Single Post
  #41  
Old 20-03-2010, 02:53 PM
dhein's Avatar
dhein (David)
Registered User

dhein is offline
 
Join Date: Nov 2009
Location: Adelaide, Australia
Posts: 22
500D vs 500D Noise - batch variations DO exist

Hi all - here's a follow up to my previous email.

500D vs 500D.

I finally had a chance to compare 2 x 500D's last night, so at last an apples vs apples comparison. I think the results speak for themselves.

These were taken within an hour of each other, temp was around mid 20's, both camera's were switched on fresh and had not been running before. Lens was removed, and bayonet capped, view finder facing down against hard top to minimise light entry. Settings were ISO1600, 4 mins. Camera's internal dark frame routine disabled.

Below samples are 100% crop containing both JPG & RAW as camera's were set to dual output mode.

Regardless of stacking technique, it's pretty clear that from step 1, I'm already at a significant disadvantage as my sensor produces significantly more noise.

At least this now proves to me, that there are indeed batch variations between the same model camera. Maybe this isn't that common, but it obviously exisits. Maybe it's a fault in the chip, maybe a fault in the electronics or DGIC4 processing ..who knows.

But these are legitimate comparisons between two indentical cameras.

Now I need to check whether mine is still under warranty!

Cheers
David
Attached Thumbnails
Click for full-size image (500D-vs-500D---Noise-comparison.jpg)
140.1 KB101 views
Reply With Quote