I once had a copyright lawyer tell me that while only a court of law could effectively determine whether an image is an infringement, a general rule of thumb is to change the original reference by at least 30%. How much constitutes 30% is subjective, of course. I've also heard that you need at least 2 reference images to work from in order to lessen the issues of infringement - and the more the better.

Lynette
--
Ms. Lynette R. Cook, Artist/Illustrator
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Main Web Site: http://www.lynettecook.com

> On 10/2/15 5:47 PM, Jorge A. Santiago-Blay wrote:
>> Dear Entomo-Listers
>> 
>> When authors send me papers for publication, I try to remember to remind them to ask permission to
>> reproduce images from the owner of the copyright. Whether non-human or human entities, an email is
>> generally all it takes to say "yes". Yet, sometimes money needs to be transacted or the reply is
>> "no" or no reply at all is available.
>> 
>> My question is, if one cannot get permission, how different does the new image have to be to be
>> considered as "different" from the previously published one and be free from the concerns of
>> copyright violations.
>> 
>> Your anecdotes (whether personal or from someone else) as well as constructive suggestions,will be
>> welcomed. Please send them directly to me at:
>> 
>> [log in to unmask] <mailto:[log in to unmask]>
>> 
>> Apologies for potential duplicate emails.
>> 
>> Sincerely,
>> 
>> Jorge
> 
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