Viewing of large b/w or grayscale images looks horrible.

[rbush]

I kept noticing that Tiff's we had been receiving where not rendering correctly in the latest and previous versions of XnView. With much research, I found a solution, so hopefully you can fix based on the solution.

If we receive a large Tiff that is 6000x4000 (example) that is using binary (Photoshop calls it Bitmap), the rendering of the image on the screen looks horrible. It appears that it drops all grayscale information and only displays black and white dithered information. For viewing architectural drawings, survey's, etc, it is not to the quality needed to view the data correctly. The image looks perfect in other viewing programs such as MaxView or Adobe Photoshop, so I know it is a problem with XnView

With much work, I found that if I convert the image to TrueColor, and then resize the image down to something more manageable (say 2000x1333) the image will look great. There is something about viewing LARGE grayscale style images that cause the problem. I can take the same image and convert it to a Jpeg and then resize it, and it will look correctly. If I just save it as a Jpeg without resizing it, it looks horrible.

[xnview]

I kept noticing that Tiff's we had been receiving where not rendering correctly in the latest and previous versions of XnView. With much research, I found a solution, so hopefully you can fix based on the solution.

If we receive a large Tiff that is 6000x4000 (example) that is using binary (Photoshop calls it Bitmap), the rendering of the image on the screen looks horrible. It appears that it drops all grayscale information and only displays black and white dithered information. For viewing architectural drawings, survey's, etc, it is not to the quality needed to view the data correctly. The image looks perfect in other viewing programs such as MaxView or Adobe Photoshop, so I know it is a problem with XnView

With much work, I found that if I convert the image to TrueColor, and then resize the image down to something more manageable (say 2000x1333) the image will look great. There is something about viewing LARGE grayscale style images that cause the problem. I can take the same image and convert it to a Jpeg and then resize it, and it will look correctly. If I just save it as a Jpeg without resizing it, it looks horrible.

You can change that in option/View/Zoom quality - Reduce