Camera Labs

Hello
Came to thinks about a thing yesterday when I was out taking pictures with a friend. He owns a Sony a200 which features a CCD sensor, I myself have a D90 with a CMOS sensor. The thing that came to my mind was why my D90 has a Standard ISO of 200, and the a200 has a standard of 100. Even through the D90 can be lowered until an equivalent of ISO 100, it is set to 200 or higher in auto mode.
And as the classic rule goes: Lower ISO = less noise/better images, I can't stop to wonder why nikon didn't set the ISO to 100 as standard? Wouldn't that create slightly better images?

Anyway the only suggestion I have is that A CMOS sensor is better to achieve light then a CCD, meaning that the CMOS in standard mode has an equivalent ISO of 200, and the CCD 100...

Please help me figure this out!

_________________
Nikon D90 | Nikkor 18-105 AF-S f/3.5-5.6 VR | Nikkor AF 50mm f/1.8D | Nikon MB - D80 battery grip | Lowepro Flipside 200

Nokia 6220 5mp - Carl Zeiss optics



Flickr

Hi bigblocke,

Does my thread Know your native ISO help? BTW, what I termed "native ISO" is often referred to as "base ISO".

Bob.

_________________
OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.

From what I've read, the 200 ISO on the D90 is the native ISO, whilst 100 ISO is "fake". There were some comparison shots showing a more grainy image at 100 ISO.

_________________
I take pictures so quickly, my highschool was "Continuous High".

I read some magazine and some camera's can handle 200 ISO correctly and to think if CMOS can handle ISO 200 its not a problem...

This is what we will think in taking picture if we are not anoyed w/ grains or we can't see noise in ISO 200 its not a problem...

_________________
Good Aperture Everyone! Good reply is always Making me very very happy thanks...
Sony A700; sony 18-70mm, 18-250.
My flickr!! http://www.flickr.com/photos/loymercs/
My Blog!! http://loymercsclick.blogspot.com/