|I am usually more restrained in expressing opinions but I read the conversation by relating the photo and your comment.
I prefer morning sun or afternoon sun to take butterfly pictures.....
I like the sun to "wash" the entire wing of the butterfly...but it is not always so....often I have free time for photos only between 12 am - 16 pm.
Morning and evening ours are recommended in most textbooks of photography but I do not think that should be a rule.
Wings are highlighted by light falling obliquely.
It is a 3d effect obtained only with oblique light....
I like this butterfly with his amazing and colorful wings.
Geranium Bronze (22)