ali_baba2

<p>Thanks for the replies,<br /> the problem is that the XTI seems to meter wrongly so it overcompensate giving a dark image thats why the settings are different and seem consistent with the pics.<br /> Dan: they both metered the shadow on the chair, thats why the part in the sun is washed out in the XS (which works perfectly) the XTI instead think that the shadow is in correct exposure, which is not.<br /> Tony: i had already updated the firmware with no improvement, settings are the same on both<br /> Puppy, Roger: ill try to set EC to + 2 so if the camera meters a faulty +2 but overexposes because of the EC the exposure should be a zero, but if i do so ill have no possibility to overexpose since im at end dial... better than nothing i guess..., id prefer to fix it if theres a way though<br /> Michael: i was looking through the viewfinder so that should have stopped a bit the light, i didnt know that light from there could affect the metering though...<br /> JDM: ill try with a simple wall and thinking about it ill check a no lens shot too, just for the exposure difference. but im sure they were both metering the shadow on the chair.<br /> How digital cameras meter the light? Anyone knows how that works?</p>

<p>Ok so recently i got for pennies a rebel XTi, the problem with it is that the picture come out extremely dark.<br>

I checked it with my own camera, a rebel XS, which i know works perfectly, and looking at the meter for the same exposure the XTi is off by a +2. Obviously when in full manual setting the pictures come out fine, because it ignores its own exposure metering, the bad is that i cant count on it and have to sort of guesstimate how to set the exposure (well i put it on a steady +2 and suppose it really is a correct exposure). The problem is on the more automatic settings where the camera does its own compensations based on its own reading. i dont use them much but it still bugs me, even because i cant set the exposure compensation as it is now.<br>

What i think its happening is that the camera somehow <strong>thinks there is more light than what is in reality</strong> so it compensate stepping down and underexposing everything. so the pictures come out dark, i tried other lenses on it with no difference and tried its own lens on the XS and it worked perfectly so that tells me its not a problem with the lens.<br>

I rule out sending it to Canon, only the shipping would cost more than what the camera is worth, so i either use it as it is (i need a camera to use for underwater pictures and there the settings are always manual) or i try to fix it on my own. Anyone knows something about this kind of problem? is it a software thing or hardware?<br>

I cant find how the camera reads the amount of light, anyone can explain me?is it a sensor on its own does it calculate it from the image sensor... how does it work?<br>

here are two pics shot in the sun in full auto one right after the other (the time/date in one camera is not set properly for the ones who read it in the exif):<br>

<img src="http://farm7.static.flickr.com/6016/5930013153_13fcba0e5c.jpg" alt="" width="500" height="333" /><br>

this first one is shot with the XS and the exif reads ISO 400, 1/200, F10<br>

<strong>the same one</strong> with the "flawed" XTi:<br>

<img src="http://farm7.static.flickr.com/6002/5930575388_eb5850435c.jpg" alt="" width="500" height="333" /><br>

for this one the exif shows ISO 400, 1/400, F14<br>

ægain, in full manual the pics are exactly the same in both cameras, another thing that makes me think its not a lens thing.<br>

Any help is very appreciated</p>

 

<p>So i looked around the forums and after a quick search i havent found anything, if it has been posted already then i missed it.<br>

Anyone knows where to find ... free service manuals for an XT and an XTI?<br>

Their problem its the classic "no power" and i suspect ill have to get into them, i would much prefer to do that with a service manual but since im already getting the battery and the charger and ill have to get the cf card for them, or a cf to sd adapter (if i get them to work) i would prefer not buy the manual from some resources online. PDF download, no previews no idea if its the real thing or just the component list.... Battery, card and charger (the non oem stuff) already cost more than what i spent for the two bodies, so wouldnt want to add money to it even if its not much, for certain its not worth to send them in for service.<br>

anything around internet? even someone that documented their own repairs?</p>

<p>PS: dont really need another camera to substitute these two. I already have an XS, they would be a second & third body, to be used mostly in risky situations like underwater, camping, or during backpacking trips where a camera could be stolen</p>

<p>For what concerns the kids getting into photography i think that considering the fact they are not used to have a viewfinder has its importance, ive see that with my nieces, i couldnt distinguish a fig with the glare on the LCD and they could. So i receive the reply "you need new glasses"...<br>

Point is: i got used to the viewfinder, i got used to hold the camera in a certain way, i was used to heavier cameras that are not that easy to hold steady at arm lengh, kids arent used to it and adapt quite easily to the system they have now.<br>

If we were giving a 35mm reflex to one of the first photographers i would wonder if he would complain about taking pictures with a camera that doesnt need a tripod. Would he be shaking all over because he has to hold it and press the shutter instead of aiming his old big wooden box and take the cap off the lens?<br>

if someone really needs a viewfinder retrofitting an LCD viewfinder could be a solution, the camera is held like usual.</p>

<p>if you care having a small addition to the camera there are some LCD viewfinders, basically a simple optic that covers the LCD, you use it like you would a viewfinder but what you see its the image in the LCD, which is what the effective picture is. Some of them are simple DIY</p>