Looking For Information On TWDR

1, I have never heard 'TWDR' used before but I guess that the 'T' stands for 'true' since people regularly talk about 'true WDR'.

The 'true' is using multiple exposures and is covered in our WDR Tutorial

I found one instance of TWDR indeed meaning "True Wide Dynamic Range", on a no name camera here.

It could stand for 'Terrible'. Maybe some truth in marketing for once?

In the world of Wide Dynamic Range, you have two types:

1. True WDR
2. Digital WDR

If it is coming from an Asian OEM, from experience TWDR stands for True WDR, which is when two differently exposed images are superimposed together to make a single, (hopefully) better exposed image. The only downisde is that with some cameras, you will get ghosting and loss of detail on objects that are moving. This is because the two images are taken one after another and any moving object will be in two seperate locations when each image is taken before they are merged. Depending on what you are looking at, this may not be an issue though.

The only downisde is that with some cameras, you will get ghosting and loss of detail on objects that are moving.

Another downside of MWDR (multi-exposure wdr, lets call it this, since there are new improved forms of wdr on the horizon that do not use multi-exposure) is that many cameras maximum frame rate will be halved because they are using 2 frames in for every 1 out.