An ear wax remover bulb works great. It produces a clean and reasonably 
powerful blast of air. Keep it in the box it came in, and it will always be 
sanitary.

Paul
> On Jan 9, 2015, at 4:24 PM, Mark C <[email protected]> wrote:
> 
> Yes - I looked at small compressors once for film, but even the smallest was 
> too big. I've had very good luck with the cans I get from Office Depot, but 
> since it is a house brand product there's no guarantee of consistency. At 
> least the sensor cleaned up with the sensor swabs.
> 
> Mark
> 
> On 1/9/2015 8:56 AM, Alan C wrote:
>> Most irritating. I would imagine that most aerosols are prone to delivering 
>> some gunge especially when nearly depleted. What would work well is a mini 
>> lab. bench compressor with a decent filter on the outlet but it would hardly 
>> be cost effective.
>> 
>> Alan C
>> 
>> 
>> -----Original Message----- From: Mark C
>> Sent: Friday, January 09, 2015 7:34 AM
>> To: Pentax-Discuss Mail List
>> Subject: Canned Air Debacle
>> 
>> Last summer I managed to get a lot of dust and crude on the view screen
>> of my K-3, so I wound up giving it a good cleaning with canned air. A
>> lot of the stuff went onto the sensor, so I blasted it as well without
>> thinking about it. Lo and behold, everything came out nice and clean. I
>> had always been skeptical about using canned air on a sensor, but after
>> this experience I figured that it was OK after all.
>> 
>> SO, today before going out to take snow flake photos I gave the K-01
>> sensor a good blast with a canned air. Looking at my first results - the
>> photos were incredibly spotty and speckled. At first I thought the glass
>> I shoot the crystals on was dirty, but then I noticed a few distinctive
>> spots and speckles that were on each and every frame. So I tested the
>> sensor for dust by putting on a 90mm macro lens, stopping down to f32,
>> and placing the camera face down on a light table.
>> 
>> Here's one of the snowflake shots that alerted me to the issue and the
>> sensor test on the light table:
>> 
>> http://www.markcassino.com/b2evolution/index.php/imgp8714-jpg-1?blog=9
>> 
>> Click the images for a larger file.
>> 
>> I always figured that the problem with canned air would be that it would
>> burp up propellant onto the sensor - but in this case the issue is
>> apparently droplets of oil or something like that. Also - I have used
>> this can to "clean" several rolls of film before scanning. Maybe I
>> should go back and look for the spots because I never noticed them. My
>> guess is that the film grain hides any spots that appear.
>> 
>> I had a few old sensor swabs and a bottle of Eclipse E2 fluid here and
>> was able able to get the sensor cleaned up just fine. It has been years
>> since I did a wet cleaning of a camera sensor. The can of air I used
>> today was 3M, in the past I had used Office Depot's store brand (which
>> is what worked fine on the K-3 sensor). Since the canned air has worked
>> fine int he past, I guess it is simply a difference in quality between
>> brands or maybe I just held the can at the wrong angle today.  At any
>> rate - I am not using canned air on sensors any more!
>> 
>> 
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