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You can control every detail of the noise reduction process and save these settings in order to use them again later. I use Imagenomic's Noiseware Standard plugin for Photoshop for that job and I'm very satisfied with it. I guess, that is the reason why the newer Coolscan models use ED glass.įor the post-processing of digitised slides you need a very good noise reduction software. But I don't have any information about the depth of field of the Coolscan III.Ī closer look to the top of the mountain shows - see 100% crops below -, that the Coolscan III produces a little bit of colour fringing. Nevertheless I guess the depth of field is the main factor here, because the slide itself has a curvature that matches the sharpness pattern of the photographed image. In contrast, a scanner has the same sharpness everywhere. In general, lenses are softer in the outer corners than in the centre of the frame. Here the scanned image is slightly sharper, see below. In the corners, things are a bit different. But some unsharp masking on the scanned image makes the difference less significant, see below. The photographed image seems to be the clear winner. On the D700 I used the camera's focus indicator for focussing. Now let's have a closer look to the sharpness of the two images. That makes the workflow with the scanner a bit faster. It has no image sensor with possible specks on it and due to its "ICE" technology dust specks and even small scratches on the slide are removed automatically. The scanner normally does not have such a problem. As a DSLR photographer you know this problem very well. That is a mix of dust specks on both on the sensor of the camera and on the slide itself. Please ignore the slight differences in colour temperature and brightness.Īt first glance you notice a difference between the two images: the photographed one (see below on the right) has a couple of specks. The image on the left is from the Coolscan, the one on the right is from the D700, just raw converted by Nikon Capture NX. It shows the sleepy fishing harbour of Henningsvær, Lofoten, North Norway.
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This slide was captured in summer 1990 with a Nikon F-801 plus AF-Nikkor 85mm f/1.8 on Fujichrome Sensia (ISO 100). For the example in this article my SB-700 was used. Therefore I prefer to use a flash as a light source. You can photograph a slide by holding the unit against the sky, but that method will not produce reliable results in terms of colour temperature.
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The D700 was set to ISO 200 and to produce 14 bit RAW files. In terms of optical quality the Micro-Nikkor 55mm f/3.5 is one of the best lenses you can get for macro work (see my review here). If I photograph a slide with my D700 I have some borders around the actual image, so that the resolution is not significantly higher than that of the scanner. My Coolscan III scans with 2700 dpi, thus it converts a slide into a 9 megapixel digital image. photographing - comparison of image quality This article deals with the two ways for DIY digitising: scanning or photographing.Ĭoolscan III vs. Being concerned again with this subject was the reason why I revised and updated this article. But finally, I bought a "new used" scanner, because the scanning workflow appears overall easier to me. Therefore I made some new trials with photographing slides or negatives. In December 2016 I wanted to scan a lot of colour negatives. Still today, there are a lot of rolls of negative film and a few hundred mounted slides in my cupboard, waiting for getting digitised. Later, I have used my scanner mainly for getting my important images into the digital world.
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Before, I had to give my originals to a lab for that. In those years I digitised slides and negatives exclusively for printing them on my inkjet photo printer. In 1998 - five years before I started with digital photography - I bought a Nikon Coolscan III 35mm film scanner. But keep in mind that you have to give away your originals! The typical price per slide or negative in Germany is about 35 cents. If you know a good one you trust in, that's a good idea, especially if you only have a few slides or negatives you want digitised.
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How to digitise your slides and negativesīefore you think about DIY digitising: many labs offer the scanning of your slides or negatives as a service.