![]() In my workflow I usually apply the filter not to early in the process, as I personally think it works best, when global adjustments have already been done. ![]() This will give you the ability to mask areas and compare the result with the original. I recommend duplicating the layer before applying the filter. Just open in Photoshop and run the filter. Use it with your digital files if you like to get rid of dust spots on the sensor or with scanned prints. It is not necessarily restricted to film scans of any kind. Of course you can use this filter with any file you want. The plugin promises not to use simple "Gaussian Blur" to reduce artifacts but special algorithms which do not reduce image sharpness. The biggest benefit of using the filter as a Photoshop plugin instead of using it in the scanning software, is the ability to mask areas that contain false detections or areas with more detail that were falsely identified as defects. To compensate for this, SilverFast is offering the SRDx tool which is now available as a Photoshop plugin. Silver haloid in the emulsion reflects the infrared light and the information in the infrared channel gets useless. Unfortunately this method fails for most black and white film and Kodachrome slides. Infrared light passes through the film and will only be reflected by anything that is on the film, like dust, dirt or grease. It is a very effective method that depends both on the detection capabilities and the algorithms of the scanner software. An additional scan with an infrared light source will be applied and this additional IR channel can be used to digitally remove artifacts on the film. Digital ICE and Black & White negativesĪ lot of scanners offer infrared dust and scratch removal. This filter especially targets defects that cannot be detected by hardware based infrared dust and scratch removal. Everybody who is using their scanner software might have noticed a new filter which is called SRDx. LaserSoft Imaging, the company behind SilverFast has recently released a Photoshop plugin for this task. Of course you cannot expect magic and manual retouching with the afore-mentioned tools is always required especially for larger defects as the filters have a harder time to deal with them. Photoshop has its own "Dust & Scratch" filter which already works nicely. These filters target defects and blend these defects into the surrounding pixels. Among the clone and healing tools in Photoshop we can also work with filters. ![]() Canned air and dust blowers as well as small brushes are your best weapon if you want to avoid the elaborate manual retouching process. If you print in the darkroom you have no other choice than cleaning your negatives carefully before putting them into the enlarger. In the end there are always small dust particles on the film which we need to be cloned out during post-processing after scanning. Everybody who is developing film at home knows that dust is your worst enemy and while it is surely the best practice to avoid getting dust on your negatives, it seems like a fight that we cannot win.
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