Canon 500D stuck/hot pixels fix
bclaff
•
Forum Pro
•
Posts: 13,929
Re: Canon 500D stuck/hot pixels fix
karl mohr wrote:
Not nearly so useful as mapping the bad pixels out since this doubles the exposure time for every image taken.
Unfortunately, long exposure noise reduction, is probably the best way to deal with this. I know waiting for the 'black frame' is annoying and time consuming. I also sometimes do 3 and 4 minute exposures. As you could imagine waiting for the black frame is even more intense. I have since started working with 2 cameras when I do this - alternating which camera is on the tripod. (At least you can move the camera when the black frame is exposing).
I was actually surprised when I first noticed this happening on a brand new 70D during 20 and 30 seconds daytime exposures. I don't think there's anything wrong with your camera - it's just a fact of life. Maybe going full-frame might help, my friend with a 5D3 doesn't complain about this.
As far as the pixel mapping, I fixed my new-in-box T2i when I first got it. This is a heavily cropped 'before' image fresh out of the box....

I strongly disagree.
Long Exposure Noise Reduction (LENR) is not only time consuming but you're likely to get a black pixel at the "bad" pixel location.
Whereas mapping is likely to give you the average of nearby pixels; that's a more reasonable outcome.
Remember, the topic is "bad" pixels not noise from long exposures.
-- hide signature --
Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )
|
Post
(hide subjects)
|
Posted by
|
When
|
|
|
|
|
Apr 24, 2019
|
|
|
|
|
Apr 24, 2019
|
|
|
|
|
Apr 26, 2019
|
1 |
|
|
|
Apr 27, 2019
|
1 |
|
|
|
Apr 29, 2019
|
|
|
|
|
Apr 30, 2019
|
|
|
|
|
Apr 30, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
|
|
|
May 2, 2019
|
|
Keyboard shortcuts:
FForum
PPrevious
NNext
WNext unread
UUpvote
SSubscribe
RReply
QQuote
BBookmark
MMy threads
Color scheme?
Blue /
Yellow
|
|
Dec 18, 2021
|
We're Noct messing around with this review.
Adobe Photoshop and Lightroom impress in a lot of ways, but their noise reduction lags the competition and their lens corrections lack a real-world basis. DxO PureRAW 3 aims to come to their rescue without totally reinventing your workflow!
The Sony ZV-E1 is the company's latest vlogging-focused camera: a full-frame mirrorless camera based the FX3/a7S III sensor, aimed at YouTubers and 'creators' looking to go pro.
The Sony ZV-E1 is a full frame camera targeting YouTubers. Chris and Jordan are Youtubers, what do they think?
Fujifilm's X-H2 is a high-resolution stills and video camera, that sits alongside the high-speed X-H2S at the pinnacle of the company's range of X-mount APS-C mirrorless cameras. We dug into what it does and what it means.
Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.
There are a lot of photo/video cameras that have found a role as B-cameras on professional film productions or even A-cameras for amateur and independent productions. We've combed through the options and selected our two favorite cameras in this class.
What’s the best camera for around $2000? These capable cameras should be solid and well-built, have both the speed and focus to capture fast action and offer professional-level image quality. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing around $2000 and recommended the best.
Family moments are precious and sometimes you want to capture that time spent with loved ones or friends in better quality than your phone can manage. We've selected a group of cameras that are easy to keep with you, and that can adapt to take photos wherever and whenever something memorable happens.
What's the best camera for shooting sports and action? Fast continuous shooting, reliable autofocus and great battery life are just three of the most important factors. In this buying guide we've rounded-up several great cameras for shooting sports and action, and recommended the best.