Spanish translation: aparición y desaparición gradual de imágenes
Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
Explanation: Hola Cathy,
I've also found it as "desvanecimiento" in some documents.
You can check out this reference. It's a Sony VideoCamera Owner's Manual in English and Spanish. It's a PDF file, but if you don't have Acrobat Reader, select "view as text".