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  #11  
Old 03-18-2011, 08:58 PM
John MacLean Photography John MacLean Photography is offline
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Hi guys,

I previously had v6.4.4r6, It was a paid upgrade to get current, ARGH!

I'll try to post some examples this weekend of the 2 calibrations with some sample images. The multi-exposure really helps to pull out shadow detail, and it really does look a lot more like a drum scan, except for the damn CCD flare. I also plan on shooting some slides with a 5D Mark II and 100mm L IS to see how that looks. I have a couple of friends who've tried that and say it works good with film, but no Kodachrome tests with that yet. I have a couple of images on the top of my facebook fan page that you may want to look at for now.
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Old 03-19-2011, 05:01 AM
John MacLean Photography John MacLean Photography is offline
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Default No - it8

Here is the 1st set with no IT8. In this case it appears the Image-Automatic setting cleans up the color cast easily.
Attached Images
File Type: jpg 2no_IT8_no_Auto_no_ME_500x750.jpg (91.5 KB, 7 views)
File Type: jpg 2no_IT8_yes_Auto_no_ME_500x750.jpg (108.7 KB, 7 views)
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Old 03-19-2011, 05:03 AM
John MacLean Photography John MacLean Photography is offline
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Default Kodak brand IT8

same scenario here too
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File Type: jpg 2Kodak_IT8_no_Auto_no_ME_500x750.jpg (89.9 KB, 4 views)
File Type: jpg 2Kodak_IT8_yes_Auto_no_ME_500x750.jpg (113.2 KB, 5 views)
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Old 03-19-2011, 05:07 AM
John MacLean Photography John MacLean Photography is offline
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Default SilverFast IT8

In this case the the predominant blue is reduced and the warm colors really look more accurate.
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File Type: jpg 2SF_IT8_no_Auto_no_ME_500x750.jpg (95.8 KB, 5 views)
File Type: jpg 2SF_IT8_yes_Auto_no_ME_500x750.jpg (108.9 KB, 6 views)
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Old 03-19-2011, 11:53 PM
John MacLean Photography John MacLean Photography is offline
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Default scenic shot with Nikkor 500mm f8 mirror lens

This isn't the best lens for general use tests, but this shot has a variety of colors to compare also. These 3 scans are all raw with the Auto "iris" in the off position (option/alt click). The only thing happening here is sharpening in Lightroom 3, both capture sharpening "Narrow Edges (scenic) and upon Export - Screen>Amount:Standard.

The Auto iris versions are too overcooked. I would probably do this images main tonal adjustments in LR3 instead.

Again, I think the SF IT8 is the best overall for accurate color. Next upload I'll scan the actual SF target and apply the different profiles.
Attached Images
File Type: jpg no_IT8_no_Auto_no_ME_900pixel.jpg (231.6 KB, 4 views)
File Type: jpg Kodak_IT8_no_Auto_no_ME_900pixel.jpg (224.5 KB, 4 views)
File Type: jpg SF_IT8_no_Auto_no_ME_900pixel.jpg (241.5 KB, 5 views)
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Old 03-20-2011, 01:00 AM
John MacLean Photography John MacLean Photography is offline
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Default SilverFast IT8 target scanned 3 ways

I used the 3 different scanner profiles here; canned (no IT8), Kodak IT8, and SF IT8. None is perfect. I wonder how their hand measured target would stack up. But for that price I'd like a money back guarantee!
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File Type: jpg 3no_IT8_no_Auto_yes_ME_900pixel_KP.jpg (204.3 KB, 6 views)
File Type: jpg 3Kodak_IT8_no_Auto_yes_ME_900pixel_KP.jpg (200.8 KB, 6 views)
File Type: jpg 3SF_IT8_no_Auto_yes_ME_900pixel_KP.jpg (214.5 KB, 7 views)
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Old 03-20-2011, 01:23 PM
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Default my Nikon CoolScan 5000 scanning steps

While I'm waiting for image approval I'll mention how all of these were scanned. I used 48 bit color, output to ProPhoto RGB @ 4000 ppi. Some images had Multi Exposure and are denoted in the file names as either (no_ME) or (yes_ME). Some images have a slight iSRD applied for dust reduction and some have the Auto iris. There's no sharpening applied in SilverFast. Then they're imported in Lightroom 3 and the exported JPG files are sRGB and Quality 70. The previous posts indicate any other particular adjustments.
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Old 03-21-2011, 05:38 AM
andychrome andychrome is offline
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Hi John

Thanks so much for posting all these images. I look forward to being able to see them.
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Old 03-22-2011, 05:05 PM
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Andy - They're up!
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Old 03-23-2011, 07:15 AM
andychrome andychrome is offline
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Hi John

Thanks so much for all your work in scanning and posting up your results and in such a clear manner. I, and I am sure many others, really appreciate it.

Looking at your first three sets of images is really interesting. I agree that it looks like the Silverfast IT8 calibration gives better results than the Kodak IT8. Although it is a little hard to tell from the low res images that we are limited to.

Looking at post #14 titled "Silverfast IT8" is interesting and please correct me if I am wrong in the following analysis. The first image "2SF_IT8_no_Auto_no_ME_500x750.jpg" is the 'base' scan with the IT8 calibration applied but with Image-Automatic set to "no". The second image "2SF_IT8_yes_Auto_no_ME_500x750.jpg" is then with IT8 and with Image-Automatic set to "yes"? It seems that there are two important things in the scanning workflow with Silverfast (forgive my lack of in depth knowledge of Silverfast - I use Nikon Scan and have only had a play with the trial version of SF) and those two are:
1. IT8 calibration
2. Image-Automatic and whatever color cast removal tool is applied with that setting.

If I compare "2SF_IT8_no_Auto_no_ME_500x750.jpg" back to the no IT8 no Auto scan "2no_IT8_no_Auto_no_ME_500x750.jpg" then I am just seeing the effect of the SF IT8 calibration? It definetely gives an improvement but is not the full story - it seems that Image Auto and what that does to color casts is also important in terms of getting a good scan and almost has to be a default setting. There is still a color cast with the SF IT8 setup (no_auto) it just is a bit less pronounced and possibly a bit more blue/green and less magenta than with no IT8?

So that begs the question - if I want to see whether IT8 is giving an overall important improvement in terms of removing color cast: I need to assume that Image Auto (ie yes_Auto) must be a default requirement and then I can compare
(a) the 2no_IT8_yes_auto image to
(b) the 2SF_IT8_yes_auto image
Its hard for me to compare, and I believe there is an improvement with SF IT8, but it is not as large as what I was expecting. The two look moderately close.

With the scenic shot taken with the Nikkor I agree the colors look better with SF IT8. Are you saying that if you apply Image Auto to this shot that it looks a bit overcooked in which case you cant always apply Image Auto to every image and hence that is where the value of IT8 calibration comes into its own?

Great stuff. Very interesting. I hope what I have said above, makes sense.
Thanks again for all your work.
Andy
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