The Photoshop enlargement took 11” but Topaz Gigapixel required 3’ 08” to complete the job. Whilst this seems a long time in comparison, it is a fraction of the time the original version of Gigapixel would have taken. If you’re a film photographer and scan film, I’m sure you’ll have heard the advice: Review Enlargement Test 3įor this final test I want to try something that’s often frowned on, which is to enlarge a film scan. Scan within the optical resolution of scanner.If you’re using a flatbed scanner this will probably max out around 1,800ppi.
Printing at 300dpi from a 35mm scan, you’re going to get something that fits easily on A4 paper. The results are usually poor.įor this test, I’ve taken a scan made using an Epson V700 flatbed scanner set to 1800ppi. The film is Kodak TMax100 which I shot using my Xpan camera. This produced an image 4,541 x 1,661 pixels or 15” x 5.5” when printed at 300dpi. When enlarged by 400%, the image is 18,164 x 6,644 pixels which at 300dpi gives a print of approximately 60” x 22”. The Topaz Gigapixel version is clearly sharper and has more detail. In fact, some of the areas are a little too enhanced but I’ll discuss that in a moment.Ĭomparing processing performance, Photoshop made the 400% enlargement in just 4” whilst Topaz Gigapixel required 2’ 49”.
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