What's the best way to take black and white images with a Sony Cyber-shot DSC-H70
It must quite surprising but the truth is that Sony skipped the B&W capture feature in many Digital cameras like DSC-H70, DSC W510, etc.
Some models with this feature are DSC-W80/W85/W90;
Even the in-camera editor won't allow you to apply B&W filter.
Obviously you are left with single but best option: Shoot in color and convert to B&W on post-production.