This page last modified on
|
Scanner Article Update (edited 3/12/02) There is one potential problem I found with my Nikon 8000. When scanning images that had very dark shadows, I discovered that if I did raw 16 bit scans then later opened up the shadows on the 16 bit file using Photoshop 6 Levels that there were streaks in the dark shadow area within pixels in the range of 0 to 30 or so. My initial impression was that this scanner, with its large dynamic range, was just picking up shadow detail that other shadows didn't get and therefore I could just turn this to black and that would fix it. I played with this idea some but found that when comparing this Nikon 8000 scan to a Photo CD Pro scan of the same image, the Nikon 8000 scan didn't handle these dark shadows as well and did leave streaks in the shadow area where I actually got useful very dark detail from the Photo CD Pro scan. The scans from the Polaroid Sprintscan 120 also looked better in these very dark shadow areas. You probably wouldn't notice this unless you scanned an image with large areas that were black or very near black. In that case, the performance of the Nikon 8000, with the shadow streaks, concerned me. Maybe this problem was just a defect in the beta unit I was testing. Unfortunately, Nikon only left the unit with me for a limited time so I was not able to do further tests with mine. I discussed this problem with Nikon and they mentioned that if this problem occurs it can be solved by setting the scanner to scan with just one of the three sensors normally used when scanning. Look in the Nikon manual for a description of how do this to cure the problem of streaks in your shadows. Nikon has claimed they will be sending me another scanner and I will be testing this for myself. So far they have not sent me another test unit. I have had e-mails from several sources that I trust and they confirm that using just one sensor does solve this problem. Since this problem does seem to be solvable, the Nikon 8000 is the scanner I've been dreaming about and I'd recommend it! Using Monaco EZ color 2.1, or another profiling package, to make a custom profile for the scanner will help you to get scans that initially match your original slide. I've tested this with Monaco EZ Color 2.0 and a Nikon 4000 using the optional 35mm IT8 film target and it works quite well. Once you make a profile for your film scanner you want to assign this profile to your scans. If the Nikon scanner won't allow you to attach the profile directly, save the file without a profile. When you open the file into Photoshop 6 or 7, use Image/Mode/Assign Profile to assign the profile you made to the files you scan. If you then want to work in a specific color space, like Adobe RGB, choose Image/Mode/Convert to Profile and convert from the scanner profile you just assigned to Adobe RGB or whatever RGB workspace you normally use. The image on your screen should now look very similar to your original scan when that is viewed using a 5000 kelvin viewing box. When scanning slides with Polacolor, I've found that using their Color Slide Input Profile works better than the Raw Color Positive profile. I believe there may also be some newer profiles that you can download from Polaroid's web site. I usually do a Preview scan then use the Auto Exposure button in the Tone area. After doing this, I check the Histograms window (Edit/Show Histograms) to be sure I haven't thrown out any highlight or shadow detail that I care about. You can view each of the Red, Green and Blue Histograms separately which is helpful when you are working with contrasty originals. While viewing the Histograms, I'll make changes in my Lightness and occasionally Contrast settings in the Tone area to make sure I'm gettting all the information out of the film. When I'm happy with the histograms, I switch to the Scan area and usually do a 16 bit scan at 4000 dpi which I save as a TIFF file. I do most of my serious color correction in Photoshop where I have the fine control available with all of Photoshops tools. Making a Monaco EZ color 2.0 scanner profile for this scanner can also help you to get a scan that starts out closer in color to your original slide. The details of getting the best possible scans with each of these scanners will be covered in depth within my future book "Making the Digital Print" and may also be posted on this web site even before this book comes out later this year.
I have not done an extensive test on the Polaroid Sprintscan 4000, which scans 35mm at up to 4000 dpi. While recently teaching a workshop at the Santa Fe Photographic Workshops, I did compare a 35mm negative, which I scanned at 4000 dpi on a Sprintscan 4000 and also at 4000 dpi on a Nikon 4000. Both of these were 14 bit per channel scans. I made sure that both scans did a focus on the film before the scan and the Nikon 4000 scan was sharper. Both these scanners are capable devices but if sharpness is most important to you, as it is to me, the Nikon won that prize on the units I tested. Between the Polaroid Sprintscan 120 and the Nikon 8000, I believe I like the software that comes on the Nikon a bit better and I also like the Nikon's film holders, especially the 120 one. Both these scanners are a great improvement over what was available at this price in the past. I will hopefully be doing more tests on the Nikon 8000 and will also try to test the Sprintscan with Silverfast. In the meantime, if you need to get a scanner, I'd recommend either one with a slight bias towards the Nikon 8000. If you are just doing 35mm scans then I'd get the Nikon 4000 and if you have to scan a lot of 35mm images, their batch scanning attachment allows you to scan up to 50 slides automatically. A friend of mine who shoots stock and has to do a lot of scans is very happy with his Nikon 4000. |
If you have any questions or comments about
these messages or Books please e-mail us.