Folks,"HDR" can mean two things: multi-shot exposure bracketing (to overcome limitations in camera sensors) and tonemapping (to overcome limitations in display/print technology). When you are doing "single-shot HDR", you are only doing tonemapping.
As we all know the dynamic range of 5D MK III is not better than its counterpart Nikon D800. I was wondering if this deficiency could be addressed by using single shot HDR for batch processing. Has anyone tried HDR batch process to improve dynamic range, what would be good software for this purpose or any other comments. Thanks in advance.
That about sums it up.
You can only tone map a single shot, you can't get more DR from it altho you can compress it to look that way. You'll still have the original limitations of whatever camera you shot it with.
So I think the answer to your actual question is, No, even if there is a batch process to do this you would not be able to gain any DR from it.
Expanding DR beyond any camera's limitations will require multiple exposures bracketed appropriately to provide the extra range required. More files, more data, more processing and more limitations in the form of things possibly moving within the image from one shot to the next.
No real batch process for that either as each image will usually require some tweaking to make it look right.
Sorry, no shortcuts. Best compromise is to use the highest DR camera you can use and tone-map as desired if you want to do single shot only.
Meanwhile, you may not realize you just created another DR argument minefield that people are now jumping around in, somewhat off-topic.