Changing lenses
- Thread starter Mike410
- Start date
I hold my camera lens down, remove the lens, then set the camera face down. Hold the lens with the glass facing up and screw on the dust cap. Then again keeping the camera face down attach my other lens. Basically keeping everything with the opening facing down and doing it quickly will reduce the likelyhood of nastys getting in, but nothing is 100%.
ChrisJ_SLH
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Here's what I do...
1. Looses lens mount cap on new lens and make sure there is no obvious dust sat on the back element (or in the cap for that matter). If there is, remove it and then place cap loosely back on the lens.
2. (With lens facing down), Dismount old lens and place down somewhere.
3. Remove (loosened) mount cap from new lens and place loosely on dismounted lens.
4. Mount new lens.
5. Tighten lens cap on dismounted lens.
6. Look through viewfinder to notice large dust mote/cat hair has settled on focusing screen.
7. Dismount lens again and try and remove with a couple of blasts from a rocket blower.
8. Remount lens and notice there are even more specs on the viewfinder screen.
9. Repeat step 7.
10. Repeat step 8.
11. Tear hair out.
12. Send to Canon for cleaning.
1. Looses lens mount cap on new lens and make sure there is no obvious dust sat on the back element (or in the cap for that matter). If there is, remove it and then place cap loosely back on the lens.
2. (With lens facing down), Dismount old lens and place down somewhere.
3. Remove (loosened) mount cap from new lens and place loosely on dismounted lens.
4. Mount new lens.
5. Tighten lens cap on dismounted lens.
6. Look through viewfinder to notice large dust mote/cat hair has settled on focusing screen.
7. Dismount lens again and try and remove with a couple of blasts from a rocket blower.
8. Remount lens and notice there are even more specs on the viewfinder screen.
9. Repeat step 7.
10. Repeat step 8.
11. Tear hair out.
12. Send to Canon for cleaning.
Dogfish_magnet
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Dust is a fact of life with a DSLR, which ever method you use to change a lens, just using a zoom lens can introduce dust into a camera, Get yourself a rocket blower, some sort of dry clean sensor cleaning device, to help prolong the intervals between the inevitable wet clean.
Its also worth using the rocket blower to clean you rear lens elements and rear lens caps often as andy dust here is likely to fall into the mirror box no matter how you change a lens.
Its also worth using the rocket blower to clean you rear lens elements and rear lens caps often as andy dust here is likely to fall into the mirror box no matter how you change a lens.
trencheel303
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Grab a lens from my bag, pocket, hair, or wherever it is. We'll call it lens A.
Set lens A down with the business end pointing downard. Loosen the rear lens cap.
Remove lens B from the camera, place face down, and remove the rear cap from lens A and place it on lens B.
Put lens A on the camera.
Tighten rear cap on lens B and put it away.
All in the space of about 10 seconds.
After 5 or so lens changes, I run the sensor cleaning programme.
Set lens A down with the business end pointing downard. Loosen the rear lens cap.
Remove lens B from the camera, place face down, and remove the rear cap from lens A and place it on lens B.
Put lens A on the camera.
Tighten rear cap on lens B and put it away.
All in the space of about 10 seconds.
After 5 or so lens changes, I run the sensor cleaning programme.
_andyjb
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Indeed, try to keep everything upside down and use that rocket blower as often as you can. Also try avoid changing lenses in places where you're going to get more dust. Eg an outdoor shoot in spring / summer with all that dust and pollen, change the lens in the car or inside a building if at all possible.
andy
andy
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Get new lens out, remove rear cap. Holding the new lens at the correct orientation, just to the side of the current lens, remove current lens, and move both lenses across at the same time fitting the new in place. Put cap on rear of old lens and put away.
This tends to leave the body open for no longer than 2 or 3 seconds, and whilst that's plenty of time for dust to get in, the sensor shake system on the 450d does a pretty good job at removing the worst of the dust and fluff... I cleaned the sensor about 18 months ago, and even using small apertures, most of the dust doesn't show, and the odd spot that does occasionally impinge on an image is easily dealt with.
For asto imaging, where the dust shows up far worse for some reason
at f/7.5 compared to f/16 on a standard camera lens, that's easily dealt with by applying flats to the image stack.
This tends to leave the body open for no longer than 2 or 3 seconds, and whilst that's plenty of time for dust to get in, the sensor shake system on the 450d does a pretty good job at removing the worst of the dust and fluff... I cleaned the sensor about 18 months ago, and even using small apertures, most of the dust doesn't show, and the odd spot that does occasionally impinge on an image is easily dealt with.
For asto imaging, where the dust shows up far worse for some reason
at f/7.5 compared to f/16 on a standard camera lens, that's easily dealt with by applying flats to the image stack.