Canon T3 presents more noise. Therefore, here is what happens with 100 bias, no bias and 10 bias.
It seems that 100 bias has less noise than 10 bias and a little more noise than no bias.
All photos are from the same CR2 RAW files, and was used dark and flat files.
No change was done in Autosave.tiff - 32 bits - in DSS enviroment.
All photos were converted from 32 bits to 16 bits with HDR curve in Photoshop and was applied adjustment in curve and level, only.
Conclusion:
1) the improvement of bias files depends from camera noise creation. My Canon T3 can don't like of bias; others Canon T3 can like it.
2) as bias files are used for calibration of the image, some times theirs use can be useful, despite of noise, since they can enhance the details in the photo.
3) the amount of files used to create masters are important to reduce the inherent noise they carry in. A large amount will not enhance its performance.
4) I need to use more than 10 dark, flats and bias. Perhaps 20 or 30 files. But it is impossible work with 100 dark and flats with long time of exposition. Only if it is to sell the photo or to win any competition.
5) the main solution for noise issues is a good camera, with refrigeration. Those with price around dozen thousands dolares.
6) as I haven't that money...
God bless the noise ! I love them ! They are beatiful as the spikes distortion are!