Shadow Dragu-Mihai offers photographic services as a freelance service only, and never under work-for-hire arrangements, although liberal licensing arrangements are usually included in the basic services.
This means that Shadow Dragu-Mihai owns the exclusive copyright to all photos he produces, including every photo in his sample work on this site.
Most photo assignments are done with specific licensing guidelines included. For example, if you hire Shadow to produce images for your modelling portfolio, you are of course permitted to use them for personal use, and the agreement will include a license for reproduction and distribution within your profession (eg. to agents, prospective employers, et al). However, you could not put that photo into a video or film or incorporate it into any derivative work (such as a movie poster) without prior written permission of the copyright owner.
Commercial use and other licensing is usually discussed up front and the appropriate license included within the fee charged. You must have a written license prior to any intended use outside personal use.
Complete transfers of copyright are usually not considered.