Differences Between Full Frame and Interline CCDs

[jcm]

I have been trying to work out the benefit of having a full frame CCD over an interline CCD. This helped a bit:-

http://pro-lite.co.uk/File/RAD_PM_TechNote_-_CCD_Type,_Resolution_&_Speed.pdf

John

[narrowbandpaul]

i think it says a lot of good things.....

basically to incorporate the vertical shift registers, half of the pixel is covered, which impacts QE (reduced fill factor), full well (reduced pixel size).

Because they are less desirable, they are cheaper. Such chips include the KAI4021/4022, which is widely used in cameras like SXV h16, QSI 540, ATIK 4000.

There is nothing wrong with an interline chip, but it is parametrically inferior to a full frame, which correspondingly costs more. Some of the best images around have been taken with an interline transfer CCD (KAI11002)....

benefit then of full frame is

higher QE, full well, linearity. The first one just means longer exposures, the second you really cant fix. the third is not a huge concern for imaging.

hope that helps john

paul

[jcm]

Thanks for the extra info , Paul.

The info , I think , will help my decision about my future purchases.

John

[narrowbandpaul]

i forgot to add, that there is nothing wrong with an interline as long as the manufacturer has taken all steps to maximise performance. However this isnt an issue in the modern day of consumer enlightenment

paul