resolution

Software:
Adobe Bridge 2020

To get into full screen preview mode:
Select an image and press Spacebar
Use the arrow keys to navigate images in the folder
Scroll the mouse wheel to zoom in-out

Note:
In full screen mode, you may see the images display soft / low resolution,
Even if the actual image files have enough resolution to fit the display.
This happens because Bridge’s cached previews were not generated at display resolution.
To fix this issue:

In Edit > Preferences > Advanced:
Check the Generate Monitor-Size Previews option
In Tools > Cache >Manage Cache..:
Select Clean Up Cache, Purge all local cache files,
And then click Next.
* You may have to restart the program for this to take effect

Software:
Maya 2018 | V-Ray 3.6

By default V-Ray for Maya, when Production Engine is set to CUDA (GPU), resizes all the textures to 512×512 in order to save GPU memory.
Naturally, this may cause the textures to appear blurry and lacking detail in the rendered image.

To avoid this,
In Render Settings > V-Ray tab > Production renderer,
Set GPU Resize Textures to Full Size Textures, so the textures will not be resized at all (but consume more memory),
Or On-demand mipmapping, so the textures data will be optimized to reduce memory consumption (but not quality) in a pre-render process.

Note:
To get full size textures in IPR mode, do the same in the IPR tab

Adobe Bridge – Full screen preview tips

Maya V-Ray GPU texture resizing