Hot spots from the sensor of my canon 350D

The day I took this night picture I started a journey into sensor defects. Even if I reduced the image size you can clearly see red and blue spots in it. This spots turn out to be 'hot photosites' and are defective areas of the sensor were leakage current heat the sensor and burn the electronic film.

You can see in the posted image that my sensor has three types of defects, the red spots, the blue spots and the white dots. Some are bigger than others and they all increase with ISO sensitivity and time exposure. The ugly thing of my sensor is that even at ISO100 and 1/2 second I have clear defects.

What camera do you have dear reader? can you make me a favor? take a black picture with your camera, just leave the cover on and use this settings: ISO400, 30 seconds, jpg format at max resolution, no contrast or sharpening increase. Send the picture to abracaarbres(flower)gmail.com and indicate the model of your camera and the ambient temperature when you took the image. Temperature is quite inportant, in the case of my camera the defects I get using ISO1600 at 5C look similar to the defects of ISO100 at 30C

Here a list of sensor defects
Here an interesting page on sensor noise that a good friend has forwarded me

Pelican

Pelican taking off in front of Golem Grad Island. Golem Grad belongs to FYROM, while the land that you see at the end of the lake belongs to Albania. I'm spanish and was taking the picture from Grece with a Japanese camera.

Blue dragonfly

This picture was taken close to the Prespa lake. I wish I had the 100mm macro with me. This dragonfly was very beautifull and was always nicely returning for more pictures. It even opened it's wings for me.

Night image from El Quer

Since last winter I wanted to take a long night exposure. This is my best shot from yesterday's night. You can even see the milky way blurry in the center of the sky.

More on fathers and sons

Yusuf Islam - Father & Son


I've always wondered what made Cat Stevens change his name, change his life.

Thistle

I love clowdy sunsets. This spring has been a blessing one. It's a pitty not having the time to enjoy it as I should.

Ouch! that must hurt, Treehugger

I snapped my finger with the car's door. The door was fully closed and I coudn't take my finger out, I had to open the door. I still remember the pain.

Did you ever asked yourself at what speed are growing your nails? I can say that mines are doing so at aproximatelly 95 microns a day or 2.8 mm per month.

It's hard to be father

Last weekend I was very lucky to find this nest. I had a lot of fun watching a busy couple constantly up and down bringing food to their nest. They were so busy that they didn't care about me taking pictures, I was using the 100mm. I was really close.

Look at the right chick. -I'm hungy mom! bring me more food!

Like crist, crucified by us

Few days ago my brother sent me this picture. It kept moving through my head. Imagine yourself eating a delicious fish and sudently feeling a hook tearing your guts. This is us, the homo sapiens, the wild capitalism and it's colateral effects. While we seat pasively on the sofa the sixth extinction event takes place and half of the species of our planet will become extinct in the next century. It's our shame and we are all guilty.

The picture belongs to a shearwater that got trapped by longline fishing in front of l'Escala. More than 70 got trapped. 27 of them were rescued and brought to CRAM, a foundation to preserve and rescue sea animals like protected birds, tourtles, mammals... 12 were still alive I don't know how many finaly survived.

Next time you buy fish, make sure it was captured by means that minimize by-catch

Sexy Wasp

A Wasp from the 'Serra del Cadí' . This is an old friend, the same one that was fighting here with a spider.

Do you like the soup?

This picture doesn't need text.

Elena's eye and me

Here I am again reflected in another eye