If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
snapshots of postage stamps
Can I take a still image picture of a postage stamp? Right now I use my
flat-bed scanner but thought that perhaps a still picture with a webcam would be faster. But I also need quality. I am asking the question before spending money on a webcam. Thanks in advance for all advice. -- Tony Vella, Ottawa, Canada http://tv-stamps.shorturl.com |
#2
|
|||
|
|||
snapshots of postage stamps
On Thu, 18 Oct 2007 18:59:10 -0400, "Tony Vella"
wrote: Can I take a still image picture of a postage stamp? Right now I use my flat-bed scanner but thought that perhaps a still picture with a webcam would be faster. But I also need quality. I am asking the question before spending money on a webcam. Thanks in advance for all advice. -- Tony Vella, Ottawa, Canada http://tv-stamps.shorturl.com From an optical stand point, you will probably get better results from a good flat bead scanner. |
#3
|
|||
|
|||
snapshots of postage stamps
On 19-Oct-2007, (Si Ballenger) wrote: From an optical stand point, you will probably get better results from a good flat bead scanner. With mega-pixel cameras falling rapidly in price, with zoom, you might get better resolution than if the stamp covers only a small fraction of the scanners bed. Webcams are only limited resolution devices as compared with cameras. My experience has been that it is best to make a simple jig to hold the camera and target, with built in lighting to give even, shadow free, optimum lighting of the target. Then with the target well lit, use the optical zoom, not the digital zoom, so that the stamp almost fills the viewing screen of the camera. So you see what you are getting before you take the picture. You may need a colour correction filter to get the lighting right, most artifical light sources only approximate daylight. Colour correction is easy in Photoshop but it makes life easier if done once and for all at the image aquisition stage. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
WAFL snapshots implementation | Ashwani | Storage & Hardrives | 1 | March 27th 06 06:39 PM |
get snapshots from command line (Windows) | mv1 | Webcams | 1 | November 28th 04 09:17 PM |
I have problem saving snapshots on desktop using USB web camera. | [email protected] | Webcams | 0 | November 11th 04 01:03 PM |
Question: Reliability of physical snapshots on SANs | Erik H. | Storage & Hardrives | 3 | October 29th 04 04:31 PM |