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#1
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White spots on image--Canon 300SD
I am having trouble with white spots appearing on images taken with the
Canon 300SD. The FAQ's on Canon's Web site explain it this way: http://alpha02.c-wss.com/inc/ApplSer...CA104&TRF=MAIN . I don't think I buy their argument because taking a similar image at the same time and place with a Nikon 990 or Nikon 5700, spots don't appear. If anyone else is having this problem I would appreciate your explanation and your solution Lee53 |
#2
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Lee Phillips wrote:
I am having trouble with white spots appearing on images taken with the Canon 300SD. A common cause is dust in front of the camera when using flash. Can you post a sample to a Web page somewhere? David |
#3
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This link http://class.aggienetwork.com/class5...raphy-test.htm should
have a test image with three white spots noted. I will appreciate your evaluation. Lee Phillips "David J Taylor" wrote in message ... Lee Phillips wrote: I am having trouble with white spots appearing on images taken with the Canon 300SD. A common cause is dust in front of the camera when using flash. Can you post a sample to a Web page somewhere? David |
#4
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Lee Phillips wrote:
This link http://class.aggienetwork.com/class5...raphy-test.htm should have a test image with three white spots noted. I will appreciate your evaluation. Lee Phillips Almost certainly very small flecks of dust (or perhaps smoke) near the lens, which get illuminated by the flash, and appear as out-of-focus blobs. The visibility will be dependant on the axial distance between the flash and the lens, and the depth of field. With a point and shoot camera, the very small lens focal length means that the depth of field is very great. The small distance between the flash and the lens means that the particles are very brightly illuminated. Thus the flecks, rather than just creating a general hazy atmosphere, actually appear as out-of-focus blobs. Cheers, David |
#5
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David J Taylor Wrote: Lee Phillips wrote: This link http://class.aggienetwork.com/class5...raphy-test.htm should have a test image with three white spots noted. I will appreciate your evaluation. Lee Phillips Almost certainly very small flecks of dust (or perhaps smoke) near the lens, which get illuminated by the flash, and appear as out-of-focus blobs. The visibility will be dependant on the axial distance between the flash and the lens, and the depth of field. With a point and shoot camera, the very small lens focal length means that the depth of field is very great. The small distance between the flash and the lens means that the particles are very brightly illuminated. Thus the flecks, rather than just creating a general hazy atmosphere, actually appear as out-of-focus blobs. Cheers, David test post, -- chas |
#6
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Thanks to all for the explanations. Very helpful.
Lee "chas" wrote in message ... David J Taylor Wrote: |
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