听说HP S20用VUESCAN不错，昨天俺也在电脑上安装了VUESCAN。
可扫描出来的结果却大大偏黄褐色，图像还极暗，不知道
是怎么回事。哪位高人指点指点？在下感激不尽！

PS：我用了5。9板和6。0BETA版，结果都是一样

没啥好片子，以前兴趣很浓的时候确实琢磨过一阵底扫的事儿，后来不得不承认低档货就是低档货，与其那样折腾不如买个好点的，当然，有钱才行。

原来的两张照片在这里，2年前小丫头的倩影：

机长，俺来晚了，看不到你的样片，能不能给俺发几张样片，让俺好好学学。

Jack,

6。0版的扫描分辨率是通过“速度”选项调的。1X对应最高分辨率，2X就是一半，其次类推。
Preview要通过菜单-〉Preview-〉Device完成。

没有S20，不知道您的偏色到什么程度，不好说。暗的现象在我的Scan Dual上也有，我也没完全搞清。一般我还是要在photoshop里调一下level或curve。

To AY，Scan Dual毕竟是一台廉价扫描仪，过高期望不合适。总体而言，硬件性能还过得去，速度慢一些，软件傻一些。如果不想在扫描仪上花太多钱，只好用它了。

大家多交流。

试试下面各种选择和它们间的各种组合：
Scan bit depth: 32 bit
Color correct: Photosmart or HP S20
Color balance: White balance
black point: 1%
white point: 1%
其中black point/white point对色偏有很大的影响。还可试一下用VUESCAN RESET
你的SCANNER。

很多人喜欢VUESCAN是因为它可以一次扫描整条底片。因为两个软件处理Color Depth
算法不同，效果是不可能一样的。不过色温总应该可以调正的。VUESCAN没有彩色
轮，调色是很麻烦。实在不行的话，就用PHOTOSHOP做BATCH校色算了。

机长：
你觉得M家SCAN DUAL底扫怎么样？近期我打算进一台底扫，一般用途，CGY那里有此底扫，价钱也可以，你觉得能要吗？

机长：
美能达的SCAN DUAL底扫的Dynamic Range 是多少？我找了很多资料都查不出来。

如果S20的软件用着没问题，就没必要非用Vuescan了。

我的扫描仪是Minolta Scan Dual，配合Vuescan扫负片非常好，Minolta的原装软件根本没法用。但是我扫反转片时，也不一定用Vuescan。

另外，Vuescan对Kodak负片的校正明显好于对Fuji，我厚着脸皮给Vuescan的作者Ed Hamrick发mail问过，回答是：

I derive the film data from Kodak's PhotoCD data, and they haven't
been very good about adding support for other film vendors.

俺扫的两张样片：

NND！弄了一个晚上，结果还是一样。扫出来的照片
还是黄了八几，和S20原装软件没得比，不知道为什
么都说这软件好。

刚找了个别人的对比，结果也是有点偏色的，联接在
这里： http://www_infortechsolutions_com/photography/reviews/S20vsVueScan /

哪位大虾给讲讲？F3HP，您老不是也有S20吗？给说说？
TIA！

我也不记得这“Advance suggestion”是从哪一版开始有的，现在最新的版本是V6.0beta21。嘿嘿，这老兄的升级速度也忒快了些。其实我觉得各版本的扫描效果大同小异，不过是功能界面上有些增强，同时也在不停地修正对不同型号扫描仪的某些bug。

具体内容在这：

If you're scanning many frames from the same roll of film, there are several things you can do to maximize the quality and consistency of these scans.

The first thing to do is to compute a fixed exposure for this roll of film (this tells the scanner how long to expose the CCD when scanning the film).  If you're scanning negative film, find a frame that has the most clear film in the frame (i.e. the most underexposed frame) and if you're scanning slide film, find a frame that's the most over-exposed.  Scan this frame using all-default options (use "File|Default options", set the media type, then use "Scan|Device"), and then turn off the "Options|Auto exposure" option.  The values for the RGB exposure (and infrared exposure on Nikon scanners) are the values that should be used for the whole roll.

Without changing anything, now turn off the "Media|Auto mask" option.  These three values for red, green, and blue mask should then be used for the whole roll of film.

Regardless of the lighting conditions, shutter speed and aperture of each frame in the roll, you should use these fixed values for exposure and mask for scanning all frames on the roll of film.

Once you have the exposure and mask values fixed, you can scan the whole roll of film with these values.  If you're using the same lighting for all the frames on the roll (or a subset of the frame), you can lock the color balance by scanning the brightest frame in the series and then turning off the "Auto black point" and "Auto white point" options.  This will lock the black and white points for the scene, and will produce consistent colors for all the frames in the series. This is also useful if you're scanning panoramic scenes that have all been taken with the same lighting, shutter speed and aperture or if you're scanning a series of studio shots taken with the same lighting, shutter speed and aperture.

Another thing you can do to optimize workflow is to scan to raw files and later experiment with color correction. If you turn on the "Files|Output raw file" option, the raw data from the scanner is written to a series of files when scanning.  You can later batch-process these raw files by changing the "Device|Scan from" option to "Disk", and set the "Device|Frame numbers" option to 1-N.  For instance, if you produce raw files named scan0001.tif, scan0002.tif, ..., scan098.tif, you can re-scan all these files without needing to insert the film again by setting the frame numbers to 1-98 and then using the "Scan|Device" command.

If you're saving raw scan files, you probably will want to turn off the "Files|Output TIFF file" and "Files|Output JPEG file" options.  You may also want to capture the entire scan region instead of the auto-cropped region by turning the "Crop|Auto crop" option off and setting the "Crop|Crop size" option to "Maximum".

If you turn off the "Crop|Auto crop" and "Options|Auto exposure" options, then the "Scan|Device" command won't first do a preview scan.  This can save time when batch scanning.

To:Jackw
有关EPson彩喷，俺刚在新浪帖了个《Epson彩喷使用必读》。

Jackw，

1，在“Color”栏里试试改变一下“Image gamma”，这个值越大，图像越亮。
2，如果是扫描幻灯片，“Color Balance”选用“None”或者“Auto level”。
3，仔细读一下Vuescan的help文件，特别是“Advance workflow suggestion”，有助于获得最佳的扫描曝光和胶片去色罩设定。

Epson 1200photo scan 不错，可以试试。