Page 202 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed

Chapter 6: Photogrammetric Techniques 181
Figure 6.8 Laying up a photomosaic. (Courtesy of Brian Richards, Department of Maritime Archaeology, Western Australian Maritime Museum.)
number of texts (Moffitt, 1967; Wolf, 1974) describe this process in more detail and should be consulted if good quality mosaics are required.
An alternative method of sticking down the photographs, which obviates the need for feather-edging, is to use nonreflecting transparent sticky tape. By using tape the results can be unstuck and rearranged. This is an impor- tant advantage over the PVA glue method, which is fixed once the paste has dried. This method is also faster and less messy, but the presence of the tape makes it difficult to examine a photomosaic directly, and it is best to re-photograph the mosaic with a large format camera. The resulting print is usually much better than the original, because the effects of the unsightly tape are removed and the details are at a much better contrast.