The LOFAR Two-metre Sky Survey - IV. First Data Release: Photometric redshifts and rest-frame magnitudes

16 figures, 1 table and 18 pages. This paper is part of the LOFAR surveys Data Release 1 and has been accepted for publication in a special edition of A&A that will appear in Feb 2019, Volume 622. The catalogues and images from the data release will be publicly available at http://www.lofar-surveys.org upon publication of the volume. Reproduced with permission from Astronomy & Astrophysics. © 2019 ESO.