PDA

View Full Version : Another problem with my D90, dead pixel?



Patagonia
28-01-2011, 10:42am
At this point I`m very disappointed with the camera, first it was the flash not closing and 2 cracks on the body after 20 cm drop inside the camera bag, then, one year later, the viewfinder LCD froze for ever and needed replacement. Finally today I received back from service (from the viewfinder problem) and I took some photos for making sure there was no dust on the sensor because of the service, result? No dust but found what I believe it`s a dead pixel.

I put two screen shots to see if someone can confirm what is this, is there a longer guarantee for the sensor or is it just the usual 1 year? my camera has already 2 :(:(. I checked some photos taken before service and its also there so it has nothing to do...

Photo has 4288x2848 pixels, the first is a 1:1 capture in my 1280x800 Macbook screen and the second one is a 11:1 zoom.
http://img593.imageshack.us/img593/1215/capturadepantalla201101jd.jpg

http://img844.imageshack.us/img844/6210/capturadepantalla201101o.jpg

Any thoughts welcomed...

regards

ricktas
28-01-2011, 10:54am
I am fairly sure the D90 has 'pixel mapping', check your manual, and run it. Then let us know the results!

I @ M
28-01-2011, 10:54am
Any thoughts welcomed...



The flash closing problem has been well detailed and is a very easy fix that is explained here. http://www.ausphotography.net.au/forum/showthread.php?61730-inbuilt-flash-on-D90-will-not-lock-down-SOLUTION

I am not sure what you are referring to with the "viewfinder lcd" but at least that seems to have been rectified properly for you.
Dead / stuck / hot pixels can sometimes be re mapped by Nikon service, if the camera is under warranty they usually do it for free, if not they can charge to do it as dead or stuck pixels are purely a very common thing in many lcd devices and with cameras many people simply clone them out in post processing if they are that obvious at normal viewing.
No manufacturer is ever going to cover damage done by dropping and breaking the camera body and if it has received enough of a shock from the drop to crack housings it may have also damaged internal parts. If you are unlucky enough to drop and damage a camera then you simply have to accept that it is your fault for any damage that occurred.

seastorm
28-01-2011, 11:04am
Might be time to upgrade to the D7000....

Patagonia
28-01-2011, 11:36am
Thanks for the comments, I´l check the manual for the mapping issue and post my findings

I posted the viewfinder issue a while ago, the LCD with the exposure info you see below the viewfinder was the one that failed, replacement costed US$120+labour. And yes, I know I cannot complain about the drop, but I previously had a 300d (Digital rebel) for 6 years and never had an issue with it even though it received much more punishment than the D90...a monkey even had a poo on it once :D. That along the ridiculously expensive Nikon service here in Chile (they charged me US$240 for solving the flash issue, thank god I found AP thread before surrendering to the service!!!) is what has me disappointed...but maybe it was just bad luck and just "got the black sheep of the heard"

regards

Patagonia
28-01-2011, 12:23pm
Ok, before a read the manual I googled for "mapping dead pixels" and this is what I found

- Nikon does not have a tool for remapping in camera or in NX2 software...has to be taken for service AU$ 50 in Australia
- Light room automatically cleans dead/hot pixels from raw files...just tested it and it works!

I took some new nef photos and opened them in LR. Zoomed the first one at maximum possible and the dead pixel was not there, then moved to next photo without moving the zoom (it shows the same spot as on the previous photo) and the dead pixel was there at first but after LR finished "calculating" it just vanished in front of my eyes, at max magnification you cannot tell anything strange.

So problem solved and thanks all for the advice...supose I will not move to the D7000 Seastorm ;)

ving
28-01-2011, 12:32pm
lightroom... hmm...

glad ur problem is solved :th3:

seastorm
28-01-2011, 2:53pm
Good to hear all is sweet :)

There goes your excuse to upgrade tho ;)