dirt inside the lens
Posted 24/06/2008 - 11:13
Link
It's common for the odd speck of dust to get into a lens, but I don't know what those white spots are. Assuming they are not just reflections, I would worry about them. That's not normal.
Small isolated particles or stains in the lens would only slightly affect image quality, and not always to a noticeable degree. If anything, you'd just see a reduction in sharpness. Focusing as such would not be affected.
Disassembly is a professional job.
Small isolated particles or stains in the lens would only slightly affect image quality, and not always to a noticeable degree. If anything, you'd just see a reduction in sharpness. Focusing as such would not be affected.
Disassembly is a professional job.
~Pete
Posted 24/06/2008 - 11:45
Link
My advice: contact Tamron first, and then arrange to get the lens looked at.
You can get small specks of dust inside a lens, especially zoom lenses that can "suck" in air as you extend the lens. But a hair, and those white specks...!
The trouble is, they may view it as unfair wear-and-tear (for example, leaving the lens in a warm damp environment may encourage fungus spores - that's not the manufacturer's fault). So phone them up, talk nicely to them, and ask what they can do first
Matt
You can get small specks of dust inside a lens, especially zoom lenses that can "suck" in air as you extend the lens. But a hair, and those white specks...!
The trouble is, they may view it as unfair wear-and-tear (for example, leaving the lens in a warm damp environment may encourage fungus spores - that's not the manufacturer's fault). So phone them up, talk nicely to them, and ask what they can do first
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
(For gallery, tips and links)
Posted 24/06/2008 - 20:51
Link
The white marks look like bubbles in the glass - quite common in Russian optics, but I've never seen any in a Japanese lens :
R
R
Posted 25/06/2008 - 09:34
Link
Many thanks for your comments. And when I meant dirt I did mean the hair and the white marks which both happen to be under the top glass. I am still not sure if the presence of the dirt somehow affected the focusing or if there is more dirt elsewhere affecting the optics.
I will try and contact Tamron first and if I don't get any joy I will contact Adorama.
I will try and contact Tamron first and if I don't get any joy I will contact Adorama.
https://www.flickr.com/photos/_cypher/
Pentax K10D, 50, 18-55, 28-70, 100, Sigma 10-20, Tamron 18-250, 28-75
Pentax K10D, 50, 18-55, 28-70, 100, Sigma 10-20, Tamron 18-250, 28-75
Add Comment
To leave a comment - Log in to Pentax User or create a new account.


278 posts
18 years
London,
UK
Found this whilst inspecting the lens. how does this get in there and should i be worried about the fact that has got in there? could it be affecting the focusing? How can I remove it?
i have had the lens for less than a year so could i just send it back to Tamron or Adorama where i bought it
Pentax K10D, 50, 18-55, 28-70, 100, Sigma 10-20, Tamron 18-250, 28-75