Dust in new lens

LaurenceGough

LaurenceGough

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Laurence
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Hi guys,

With my new Canon 550D, I purchased a kit with the 18-135mm lens.

Looking at that lens today I noticed there is a few specs of dust within the lens glass.

Should I get these lenses replaced as surely dust is no good, or is this common?? Seems off to me at around 300 quid for these lenses.

Cheers,

Laurence
 
Is fairly normal. I would be very surprised if a shop replaces a lens for a couple of specks of dust.
 
I've been reading online and it seems that the lower end zooms (I say lower end as 300 quid vs 1000+ :)) apparently get dust in them quite often. They say it makes no difference I just wanted the forums view on it.
 
LaurenceGough said:
Hi guys,

With my new Canon 550D, I purchased a kit with the 18-135mm lens.

Looking at that lens today I noticed there is a few specs of dust within the lens glass.

Should I get these lenses replaced as surely dust is no good, or is this common?? Seems off to me at around 300 quid for these lenses.

Cheers,

Laurence
Click to expand...

I have the 28-135mm and its got plenty of dust but its one of the sharpest lenses I have. Most lenses with extended barrels will collect dust

Steve
 
I'd say stop worrying about dust and get out and use your camera. It'll have no effect on your pictures at all and you're going to get more dust and dirt down the road.
 
Im wondering if anyone saw the 'how its made' programme a couple nights ago ? I only flipped over to it by chance.

It showed the process of how camera lenses are made. From being cut from a big chunk of glass to polishing, and assembling each separate piece of polished glass into the lens body. At every single stage checks were made to pick up any specks of dust, then corrected if found. After watching the assembly process i struggle to understand how dust can get into a lens- let alone a new one straight from the factory.

They repeat alot of these episodes but doing a quick search isn't showing it up again yet. If you get chance i'd highly recommend watching it :thumbs:

Coley
 
Martyn... said:
The effects of dust and scratches on camera lenses LINK :thumbs:
Click to expand...

Wow :police: Thats pretty amazing !!!!!! Thanks for posting Martyn :thumbs: Does this mean i can simply wipe off the dust on the front and rear of my lenses ? Sorry for the brief hijack Laurence, hopefully its still kind of relevant ;) I've never done this before as i wasnt sure of the correct way to do it.

Coley
 
Coley. said:
Wow :police: Thats pretty amazing !!!!!! Thanks for posting Martyn :thumbs: Does this mean i can simply wipe off the dust on the front and rear of my lenses ? Sorry for the brief hijack Laurence, hopefully its still kind of relevant ;) I've never done this before as i wasnt sure of the correct way to do it.

Coley
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Best is to use a "Rocket" air blower to remove the dust, wiping with a cloth can scratch the coatings if you have not blown away any grit first.

Rocket Blower
 
Smash it in pieces with a large hammer, it is obviously useless now it has dust on it..............:thumbs:
 
Martyn... said:
Best is to use a "Rocket" air blower to remove the dust, wiping with a cloth can scratch the coatings if you have not blown away any grit first.

Rocket Blower
Click to expand...

Thanks for the info Martyn. Ordered from the bay so should be with me in 2-3 days :naughty: So its very similar to washing a car then- pressure washer off all the lumps then with a clean sponge wipe away the remaining smears ? I've got alot of lenses to clean when the parcel arrives :lol:

Coley
 
Coley. said:
Thanks for the info Martyn. Ordered from the bay so should be with me in 2-3 days :naughty: So its very similar to washing a car then- pressure washer off all the lumps then with a clean sponge wipe away the remaining smears ? I've got alot of lenses to clean when the parcel arrives :lol:

Coley
Click to expand...

The point of the image is that a few specs of dust will not make the slightest difference.

When I was into my astronomy the advice on cleaning the optics was ... don't, however their coatings are a lot more delicate than those on a lens.

The blower will do the job no problem :thumbs:
 
Ok guys I think dust is nothing to worry about then :).

Yeah, I have seen the lens manufacturing process and that's what had me thinking... It must be for just the high end lenses. Or it's just from the air affect when zooming etc, but in this case isn't it kind of a waste of time keeping the factory dust free haha.... I guess they just use the same places for all glasses..
 
OK so is this is a brand new lens? not 2nd hand new bought from a shop?

I would expect it to be dust free when it comes out of the box so I can put my own dust in there. We know it makes no difference to the images it produces but I would still want it sparkley new without dust if I had paid full price for a brand new lens.
 
Brand new but it's had a few days of use by me, just outside in some woods and a few other video uses.
 
LaurenceGough said:
Brand new but it's had a few days of use by me, just outside in some woods and a few other video uses.
Click to expand...

If it was me, and my new lens, I would take it back. Saying that my Sigma 18-50mm F2.8 Ex Macro has dust and it doesn't seem to affect the image at all.
 
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