trs Posted March 13, 2007 Share #1 Posted March 13, 2007 Advertisement (gone after registration) I just picked up my M8 from UPS that came back from upgrade. When I opened the box, body cap has sticker that reads as in subject line above. See below. Attention: For sensor cleaning please see instructions, p. 60/128 (also in Japanese) Are they suggesting I should clean the sensor after factory upgrade? Since I am at work and have no lens, I can't test whether sensor has dust or not. I guess first order job is to test for sensor dust today. Did you all get your camera back with that sticker when your camera came back from Solm? NJ did great job in rushing the camera back to me as soon as it arrived from Solm. -tanka Link to post Share on other sites More sharing options...
Venkman Posted March 13, 2007 Share #2 Posted March 13, 2007 I had that sticker on and yes, I had sensor dust, even after the service cleaning it. I think it's normal and using a rocket blower solved that for a while. Link to post Share on other sites More sharing options...
albertknappmd Posted March 13, 2007 Share #3 Posted March 13, 2007 Seems to be a prudent precaution.... Link to post Share on other sites More sharing options...
trs Posted March 13, 2007 Author Share #4 Posted March 13, 2007 Thanks for the info. I guess I will see if I hve any sign of dust. I should be able to figure by tomorrow. -tanka Link to post Share on other sites More sharing options...
carstenw Posted March 13, 2007 Share #5 Posted March 13, 2007 Shoot a well-exposed sky at f/16 and you will see right away. Shoot it again at your normal apertures to see if it is a problem. I find that it often isn't, and trying to get every last speck of dust off a sensor is a quick route to madness. Link to post Share on other sites More sharing options...
stunsworth Posted March 13, 2007 Share #6 Posted March 13, 2007 Tanka, just try firing the shutter without a lens on the camera. The dust, if there is any, should be obvious. Link to post Share on other sites More sharing options...
trs Posted March 13, 2007 Author Share #7 Posted March 13, 2007 Advertisement (gone after registration) It's rare to find blue sky in Seattle area around this time. But, we do get some sun-breaks here and there. We seem to have pretty good chance of that next couple of days. I had to clean my Fuji S2 pro many times and was not fun. Scared to death in making scratches. -tanka Link to post Share on other sites More sharing options...
trs Posted March 13, 2007 Author Share #8 Posted March 13, 2007 Tanka, just try firing the shutter without a lens on the camera. The dust, if there is any, should be obvious. Thanks. This is a new trick. I will try that today. -tanka Link to post Share on other sites More sharing options...
cocker Posted March 13, 2007 Share #9 Posted March 13, 2007 Tanka, just try firing the shutter without a lens on the camera. The dust, if there is any, should be obvious. Errm, Steve, won't that mean that if there isn't any before you fire the shutter there is more likley to be some after you fire the shutter or am I missing something. Link to post Share on other sites More sharing options...
tashley Posted March 13, 2007 Share #10 Posted March 13, 2007 Thanks. This is a new trick. I will try that today. -tanka Don't do it! It is utter madness and the quickest way to load your sensor with dust unless you're in a very very dust-free room! Tim Link to post Share on other sites More sharing options...
carstenw Posted March 13, 2007 Share #11 Posted March 13, 2007 Shooting at f/16 is way more effective for spotting dust. Think about it: all the light is coming from one direction instead of from every direction, giving every scratch and piece of dust the best possible chance of throwing a shadow on the sensor. Link to post Share on other sites More sharing options...
wstotler Posted March 14, 2007 Share #12 Posted March 14, 2007 The f/16 trick worked for me--that's what I use when I'm cleaning. I've only had to clean once, BTW, at about 1,200 shots. It was an iterative process--I missed some junk on the sensor during the first two passes *even after* reading and following advice here about cleaning techniques. BTW, my body cap didn't have that sticker on it when it arrived in January. Link to post Share on other sites More sharing options...
gravastar Posted March 14, 2007 Share #13 Posted March 14, 2007 If you really want to see sensor dust make yourself a pinhole lens out of a spare body cap and aluminum foil. Bob. Link to post Share on other sites More sharing options...
stunsworth Posted March 14, 2007 Share #14 Posted March 14, 2007 Don't do it! It is utter madness and the quickest way to load your sensor with dust unless you're in a very very dust-free room! I can't see that it will make much difference having the lens off. The shutter will be open for what? Say 1/1000th of a second. That's too short for any dust to be attracted into the body of the camera - dust doesn't move that fast :-) - so the only _possible_ issue I can see is with dust that's already inside the camera body and that's going to be there whether a lens is on the camera or not. If my logic is wrong feel free to shoot me down in flames <grin> Link to post Share on other sites More sharing options...
marknorton Posted March 14, 2007 Share #15 Posted March 14, 2007 I'm wondering whether they've had cameras returned just because of dust on the sensor and the owner has not read the manual. Or, maybe, they've had some owners take some wet'n'dry to the sensor to give it a good seeing to only to repent at leisure. My experience of the M8 is that it is not especially prone to collecting dust and it's a rite of passage for any owner of a digital camera with removable lenses to learn how to clean the sensor without becoming a nervous wreck in the process. Link to post Share on other sites More sharing options...
jaapv Posted March 14, 2007 Share #16 Posted March 14, 2007 I can't see that it will make much difference having the lens off. The shutter will be open for what? Say 1/1000th of a second. That's too short for any dust to be attracted into the body of the camera - dust doesn't move that fast :-) - so the only _possible_ issue I can see is with dust that's already inside the camera body and that's going to be there whether a lens is on the camera or not. If my logic is wrong feel free to shoot me down in flames <grin> The movement of the shutter will create air turbulence, the sensor will be activated and static. All dust present will adhere to the sensor. With the lens on that will only happen once, and the dust wil not be replenished, with the lens off, you have fresh dust floating around. Link to post Share on other sites More sharing options...
stunsworth Posted March 14, 2007 Share #17 Posted March 14, 2007 I'm still not convinced that in practice firing the shutter will cause enough turbulence to drag dust through the shutter onto the sensor - remember that at short shutter speeds the shutter is a thin slit moving over the surface of the sensor, the full sensor is not exposed. I'll give it a try on Friday when I have access to my M8 and let you know if the sensor picks up any dust. Maybe I've been lucky, but so far I've managed to remove dust on all my digital SLRs and M8 with a hurricane blower - not that I agree causes a lot of turbulence <grin> Link to post Share on other sites More sharing options...
BillBrittain Posted March 14, 2007 Share #18 Posted March 14, 2007 I just got my second body (serial #3109042) yesterday and it had that sticker. My earlier body (#3106306) did not have it. I guess I'll clean the sensor before I get started. Link to post Share on other sites More sharing options...
Eoin Posted March 14, 2007 Share #19 Posted March 14, 2007 Thats the idea of the sensor cleaning mode, the sensor is not powered and attracts less dust. Therefor, to inspect your sensor you should use this function. Some people are scared of dust, employing many different methods to reduce exposure to the elements. For me it's just a fact of life with every digital camera. A quick shot at a white wall or blue sky @ f/16 shows the contamination. I've gotten into the practice of checking every time I go to use the camera and review the results on the LCD, then a quick blow with a rocket blower and recheck, good to go. The more frequently you do this the less chance you have of something baking its self onto the sensor. Then the pec pads and eclipse fluid are needed. Link to post Share on other sites More sharing options...
blakley Posted March 14, 2007 Share #20 Posted March 14, 2007 You don't have to take the lens off; just focus it at infinity and point it at a nearby neutral-colored wall. At f/16 is fine. What you want is a uniform background. Link to post Share on other sites More sharing options...
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