Crud

Dogdots

My 24-105 lens has some crud on the glass in the back opening of the lens and I don't know how to remove or clean inside of there. Any suggestions would be helpful

Thanks

ziggy53

For dust a source of clean air is a good start and I often hold the lens horizontally or even upright (rear of the lens pointed down) to try to get any dust or lint to try to drop out of the lens.

For fingerprints, you use the same approach as you would to clean the front surface of the lens. It can be a pain to clean a deeply recessed rear element, so using a soft/flexible "spatula" to hold the cleaning cloth or lens paper can help. Start with moistened material and progress to dry material after the gunk is fully removed. Always move from the center of the lens surface to the edges, moving in a circular fashion.

Ultimately, if the gunk is really sticky or difficult to get to, you might consider using a professional service to clean and lubricate the lens.

Dogdots

ziggy53 wrote:

For dust a source of clean air is a good start and I often hold the lens horizontally or even upright (rear of the lens pointed down) to try to get any dust or lint to try to drop out of the lens.

For fingerprints, you use the same approach as you would to clean the front surface of the lens. It can be a pain to clean a deeply recessed rear element, so using a soft/flexible "spatula" to hold the cleaning cloth or lens paper can help. Start with moistened material and progress to dry material after the gunk is fully removed. Always move from the center of the lens surface to the edges, moving in a circular fashion.

Ultimately, if the gunk is really sticky or difficult to get to, you might consider using a professional service to clean and lubricate the lens.

I've tried blowing it with my blower, but it just doesn't move. I'll try it wet now. Didn't know if I could use something wet in there or not. Nice to know I can.

Thanks Ziggy

ziggy53

Dogdots wrote:

I've tried blowing it with my blower, but it just doesn't move. I'll try it wet now. Didn't know if I could use something wet in there or not. Nice to know I can.

Thanks Ziggy

Damp, moist, not wet or dripping.

Dogdots

ziggy53 wrote:

Damp, moist, not wet or dripping.

Ok