Views
397
Replies
2
Status
Closed
I posted the orignal message about how to use a digital camera to take pictures as if they are scanned by a scanner.
The replier of this message said I have to rely on a stronger light source, which I don’t have.
He also suggested me to use Photoshop CS to process these images. I’m not a Photoshop pro and I don’t even know how to convert a multi-color image into a monocolor image.
Please refer to the following message body for detail.
Could you help to fulfill my goal? Thanks.
On Wed, 07 Jul 2004 16:51:35 GMT, "Frank ess" wrote:
The replier of this message said I have to rely on a stronger light source, which I don’t have.
He also suggested me to use Photoshop CS to process these images. I’m not a Photoshop pro and I don’t even know how to convert a multi-color image into a monocolor image.
Please refer to the following message body for detail.
Could you help to fulfill my goal? Thanks.
On Wed, 07 Jul 2004 16:51:35 GMT, "Frank ess" wrote:
Peng Yu wrote:
I have a few paper articles (black and white, of course) to be copied as monocolor TIFF image into my computer. I usually scan them, but at this time no scanner is availbale to me. I want to use my Canon PowerShot S30 as a substitute.
The task isn’t so easy.
No flash can be used, because the paper will reflect a lot of light which makes the pictures very bright. Flash Exposure Compensation doesn’t work well at this situation. I don’t know why. Maybe it’s because this camera is not designed for this purpose.
So, for normal shutter speed 1/60(I don’t have a tripod) and maximum aperture F2.8, the result picture seems very dark under the condition that ISO speed is below 200. There is only a fluorescent lamp in my room. It isn’t practical to purchase a brighter lamp. So I have to take pictures at a high ISO speed. The file format is set to RAW by me.
Then I use Adobe Photoshop CS to process these RAW files. I adjust Temperature Tint Exposure Shodows Brightness Contrast Saturation to improve rusults at a second time. After that, it is the last step to store them in 2-value(monocolor) TIFF files. Unfortunately, I don’t find how Photoshop can save 24-bit color images into monocolor images. I am stuck. I don’t want use a third party software, because that will increase the complexity.
Then I had to try to take pictures in B/W mode. But a lot of parameters can not be adjusted at this mode, the most important thing of which is that ISO speed cannot be adjusted by hand.
Have you ever do something like this? How do you fulfill this task? Do you have any good suggestions?
Your camera wants to make the pages solid gray. You must overexpose to avoid that. Your other parameters don’t allow it.
You are out of luck. Or, you must make a change or two in your requirements.
My text-photography successes have been with sunlight or 600 watts of tungsten (4x75w on a copy stand). Someone with Photo Shop CS should be able to bring in good information-laden images from what you are able to produce.
Must-have mockup pack for every graphic designer 🔥🔥🔥
Easy-to-use drag-n-drop Photoshop scene creator with more than 2800 items.
