XnView Software

XnViewMP 1.4.5 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Slideshow
transition effects are always linear

Suggestion
add cubic-bezier easing functions to effects' trasitions
it can be some predefined easings or/and graph +textboxes with values

Example

• easings.net
  press these buttons to check effect

  

  btn.png (3.35 KiB) Viewed 337 times

• cubic-bezier.com

• easings.co

+1

BUT

Pierre Has To Add Multiple instances Of "Fade", in Order To Be Able To Apply Various Effects To The "Fade", Not Only 1