Improvement: anchor image for exposure in preview

[Davide Capodaglio]

It could be useful to directly choose the image to anchor for exposure directly in the image preview, in "easy" mode, and automatically recalc the new exposure.
Today is necessary to switch to expert, reset the settings of exposure (otherwise it will not work), choosing the new image to anchor, and do again optimization of exposure. Then go back to the preview.

[tmodes (tmodes)]

Currently there is only a button to calculate the mean (output) exposure. Changing the anchor has no effect on this function, because it calculates the mean exposure independent of the anchor image.

Modifying the anchor in the preview would only make sense, if the photometric optimizer is available from the preview window. This is not the case, and also contradicts the intent of the fast preview window.

Also it is not necessary to switch to expert interface. Simply open the panorama editor window and work there.

[Davide Capodaglio (davidecapod)]

Yes, I agree, but I think that this improvement can be very useful, especially with large panoramas; the current way of doing this is not very user-friendly, also because if you do not reset the exposure settings every time you change the anchor it will not work...
A function in the preview (that switches off the "mean exposure") and recalc it automatically would be great...