Link to test for hot or dead pixels

[I Simonius]

Can someone please post the link for the test for hot or dead pixels?

I saw it recently but now can't find it:cry:

[Eagle]

http://www.starzen.com/imaging/deadpixeltest.htm

Wonderful thing the search engine is. Here you go Simon.

[I Simonius]

http://www.starzen.com/imaging/deadpixeltest.htm

Wonderful thing the search engine is. Here you go Simon.


True , very true!

Thanks for that , I had thought it was an article here on POTN:rolleyes:
The linked thingy only works on PCs and I be on Macs

SO any other suggestions anyone

How does that software work ? might it be possible to mimic its effect in another way?

[adas]

I use the Photoshop's histogram for this.
You open the full resolution test image in PS, then click on the yellow triangled exclamation sign in the histogram to get a full-pixel rendition. After that you just move the mouse cursor inside that histogram to read the pixel count at different light levels.

Make sure you've chosen a short shutter time (1/100s or shorter) when you want to reveal dead pixels, and a longer (1s or longer) time for hot pixels.

[I Simonius]

I use the Photoshop's histogram for this.
You open the full resolution test image in PS, then click on the yellow triangled exclamation sign in the histogram to get a full-pixel rendition. After that you just move the mouse cursor inside that histogram to read the pixel count at different light levels.

Make sure you've chosen a short shutter time (1/100s or shorter) when you want to reveal dead pixels, and a longer (1s or longer) time for hot pixels.

Ah thanks!

[shiato storm]

simon, concerned you've got something not quite right with your new camera>

[I Simonius]

simon, concerned you've got something not quite right with your new camera>

Had a scratch on the mirror ( getting a replacement Tues)
Want to check the new one out sooner rather than later, that's all