How do I get a tiff image after merging a no of pictures

Hi ​@Nandu@flamingo, Welcome to the Lightroom Community Forum! Here is the typical way you could export a TIF image from Lightroom (desktop).

• Click on your stitched panoramic photo to select it.

• Click the Share icon in the top right corner.

• Select Custom Settings from the menu options under Export.

• Open the Format dropdown menu and select TIF.

• Adjust your Bit Depth (choose 16-bit to preserve the highest dynamic range from your panorama).

• Click the Export button in the top right to save the file.

If you still don't see this option, can you please send a screen recording of your workflow and your system info? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here. Thanks! ^CH