One of the most annoying problems that are introduced using the reflex digita them is the powder presence deposited on the sensor C-mos or CCD.

Also using the film the powder always has been a problem, but to the limit it is deposited on a photogram, not on all!

Who uses a reflex digita them sooner or later (is sure!) he will have to resolve the problem of the powder and soil deposited on the sensor.

Obvious E' that the sensor only comes exposed to the external agents when the lamelle are opened of the stopper, but this enough in order to make to enter very small powder particles.

The last models of reflex suddenly introduce one elevated 8 speeds 5  ft/s or ft/s  .... this generates one remarkable ventilation to the inside of the room, also a lot helped from the movement of the mirror. Easy E' therefore that the soil and the powder already entered easy in the zone mirror, steps easy behind on the sensor.

● to avoid most possible than to always expose to the equipment to the powder (bags or zaini of good quality and optical and body machine within bags protected to you).

● to hold clean objects it to you much good, particularly in the posterior part.

● to regularly clean up and to inhale the powder from the photographic ags.

● to often wash also the stoppers of objects to you and of reflex (the powder remains in the angles). Not to never leave to along optical and body machine without stoppers.

● if polverosi work in atmospheres and places, to avoid zoom to pump (the type Canon 100-400 or 35-350 or the 28-300) and to privilege zoom with inner movements and the fixed optical with the estate packings.

● when the objective is changed to hold reflex the turn towards the bottom.

● to avoid to change the objective in polverosi atmospheres, when there is wind and in atmospheres it crowds to you. (moving and walking raise much powder).

● it is mistaken to walk with the hanging camera to the neck, even if is scomodo, it is better riporla every time in the ag.

● a photographer smoker has many probabilities of having the optical and the sensor with on one nicotine patina....

 Verification of the powder presence on the sensor.

  To frame the serene sky and to release with the diaphragm closed to the maximum at least f.22 or better to f.32 (object to you macro) better to use short focali type 50mm. Better if the putting to fire is placed to the minimal distance.

Wall goes well also to photograph one white woman, to hold the putting to fire to the minimal value, therefore to have the wall sfuocata, always with f.22 or greater.

With Photoshop or other photographic programs, to regulate the levels and the contrast therefore to evidence the black points.
To magnify to real format the image  and to pass it under examination especially in the zone edges, the powder presence is notable with small clear dots much, the eventual more large halos and less it marks determine the powder presence to you on discs of a valve of the objective in use. (to clean up also he,  before put on the reflex with the clean sensor. If the powder is present on inner discs of a valve, is better to carry the objective to the center attendance.)

 LIKE CLEANING UP THE SENSOR

ATTENTION!!  

The sensor cleaning must be from expert persons in the maintenance of the inner organs of he blots some  photographic, does not assume no responsibility for damages to persons and things, who writes is an expert technician.

Before removing the stopper you cover room to clean up well all externally the room, to avoid apparel that releases hairs and powder, and important to try to be in an atmosphere a lot closed and for nothing polveroso, without carpets, absolutely far away stretches and from smokers and domestic animals, without that other persons move raising powder. Advisable E' to remove the powder and to wash the pavements in the place, and to attend some hour before cleaning up the sensor.

E' much profit a cap in head on hats in order to avoid that hats fall and forfora.

It must approach itself an atmosphere similar to the operating room.

If not there are these conditions for avoiding the operation of cleaning sensor and capacities the room to the center attendance.

The occasion to clean up the sensor must also be that one to clean up all objects to it to you especially in the posterior part, the zoom to pump as Canon 100/400 is terrible in order to accumulate powder to the inside.

The pulizia of it objects goes made to you after every shipment in places where it has been taken place to raise itself of powder. The pulizia of discs of a valve of the objective it goes made with I affixed to it to you kit complete of liquid for optical, even if this operation is easier than that one  of the và sensor always made with the maximum attention in order to avoid of rigare the optical, using specific equipments.

SENSOR CLEANING

● The reflex it goes saldamente fixed on a sturdy support.

● Before opening the stopper and discovering the sensor to clean up the room and the zone mirror, otherwise it will be enough little in order to bring back the powder to the inside and on the sensor.

● To clean up and to inhale the dirt from prisma and the all the room, to use also of the adhesive tape turned towards the outside (type the Post-it) in order to catch fine clothes and powder that is deposited to the inside of the room.
 
● To activate the function pulizia sensor and to open therefore the stopper and to carry in sight the sensor, a first R-a.vista examination will give to us endured the idea of the gravity on the presence powder.
 
● To use glances at them from blowup for electronic jobs of precision, because the powder is not looked at with normal sight, moreover to help with one strongly light lighting system led, than being cold and to high temperature color it evidences better the powder.

 
 
Before cleaning it goes made with the paint-brush to loads electrostatics ( Sensor Brush with the VisibleDust or SensorSweep of the Copperhill) specific like dimensions for the relative sensor, the Canon 20D needs a paint-brush from 14mm. 

Before passing the paint-brush on the sensor to load electrostatically same blowing air compressed on the same paint-brush for 5/10 second ones otherwise it does not collect the powder, to make one single last from left right. 

To extract the paint-brush and to blow via the powder (from the paint-brush) with a strong cleaned up air jet, and eventually to repeat the operation. E' possible to clean up the paint-brush with a specific liquid that does not reduce loads electrostatics.
 

To close the room and to made the test photo and to magnify the image, to clear to 100%  like to new room, are not thinkable,  to accept small dots to the edge image are a good compromise.

If they remain still several annoying points, it must make a cleaning deepened of the sensor, this time using the Sensor Clean with the cleaning liquid, exist two types of liquid, what it detaches the powder and that one to ph neutral for eventual points of not mineral origin as halos of salted or microorganisms...

To put some drops of Eclipse  liquid® on the pad of woven antiscratch of the Swab and to make of reading passages on the sensor trying to carry the powder in an angle low, then always with the pad making small rotatori movements to remove the soil remained in the angle. (not to use the electrostatic paint-brush for this cleaning and not even the cotton rods).

With a little experience already the visual control of the sensor it allows us to understand if it has become perfectly clean. To close the stopper, to control not the presence well powder and fine clothes in the zone under and on the mirror and rifaring the test photo.

Eclipse liquid®  distributed in Italy from www.shadesdirect.com

SensorSweep and Swab available near: www.pbase.com/copperhill/image/44822724

Sensor Brush and Sensor Clean available near: www.visibledust.com

an other  interesting solution: http://www.intemos.com/products.asp