Hi Helio Selecting multiple images and exporting them as OME-TIFF is currently not supported. In the coming version 4.3, you will be able to export a collection of images as JPEG generated using the settings of the images. Is it the type of export you are looking for?
I'm not sure I understood how the export will work but if it allows to export multiple images - or a collection of images - it should be fine. Just check will the export be done in JPEG or TIFF?
In the coming version: If you select several images, you will be able to export them as JPEG or PNG. If you select an image, you will be able to export as OME-TIFF. The OME-TIFF batch export is not currently implemented.