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02-14-2013, 01:56 PM   #1
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Lense cleaning and repair

I have a Vivitar Series 1 35-85MM f2.8 that I've been using on my K100D. I've recently noticed spots on the images produced by this lens. It appears to only be from this lens and only at 35mm. Well actually I've only tested it at 35 and 85 not at any intermediate settings. I've cleaned the front and rear external glass to no avail.

You can see the spots on the image below. The biggest one is about 1/3 of the way in from the right edge and about centered top to bottom. I'm thinking that I might need to get the internal glass surfaces cleaned.

I'm looking for any suggestions for further diagnostics and/or suggestions for resolving the problem. I called California Precision Service and they do not work on lenses this old. I have a request out on the internet to Precision Camera but I'm not holding out a lot of hope for that plan either. I'm including a second image below to show the consistency of the location.

Any ideas or suggestions for a repair shop or thoughts on what it might cost would be greatly appreciated. Thanks in advance for any help you might be able to provide.

Cliff Crabtree
PapaCC






From the kit lens:

Looks like the sensor needs cleaning. Thanks all. That was quick.

Now to go read up on sensor cleaning.....

Here is an image using the kit lens after cleaning the sensor. It took several trys to get it clean just using air but here are the results.

Thanks again to all.




Last edited by PapaCC; 02-14-2013 at 05:02 PM.
02-14-2013, 02:18 PM - 1 Like   #2
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It's unlikely those spots are caused by your lens. Looks to me like dust on your sensor.
02-14-2013, 02:26 PM - 1 Like   #3
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QuoteOriginally posted by johnyates Quote
It's unlikely those spots are caused by your lens. Looks to me like dust on your sensor.
Same feeling here.
Double check with your rare elements again. and if possible please post some other images shot by other lenses.
02-14-2013, 02:28 PM - 1 Like   #4
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Sorry a bit off topic but what is a lense? I've seen it a couple of times already on the forum.

What the above say is very true, it needs to be a hug mark on the lens, thumb width and using a high f number before you see it.
Those spots are clearly on the sensor.

02-14-2013, 02:54 PM - 1 Like   #5
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Yep, sensor dust. Try cleaning the sensor before worrying about the lens.
02-14-2013, 03:05 PM   #6
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"Lense" is a super "e" lens or a typo. It is a common error I make. I just noticed an "e" at the end of the word lens in the first sentence of this reply. Caught it in preview. The title doesn't show in preview. Sometimes my fingers don't pay any attention to my mind.

All,

Thanks for the replies. I had shot a few earlier with my 60-300MM and didn't notice the spots. However I just shot a few of mostly sky with the kit lens and the spots are there.

Hooray! I just need to clean the sensor.

This forum is definitely worth the dues I pay.

Thanks again,
PapaCC
02-14-2013, 03:17 PM - 2 Likes   #7
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QuoteOriginally posted by Anvh Quote
Sorry a bit off topic but what is a lense? I've seen it a couple of times already on the forum.

What the above say is very true, it needs to be a hug mark on the lens, thumb width and using a high f number before you see it.
Those spots are clearly on the sensor.
So .... ANVH what is a "hug mark"? Something like this:



Maybe I could loan you an "e". Would you like to buy a vowel?
02-14-2013, 04:08 PM   #8
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QuoteOriginally posted by Anvh Quote
Sorry a bit off topic but what is a lense? I've seen it a couple of times already on the forum.

What the above say is very true, it needs to be a hug mark on the lens, thumb width and using a high f number before you see it.
Those spots are clearly on the sensor.
Perhaps he is British. You know how those Brits spell...... anyway they damn well please

02-14-2013, 04:21 PM   #9
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QuoteOriginally posted by Driline Quote
You know how those Brits spell...... anyway they damn well please
Wot you mean korectly.
02-14-2013, 05:34 PM   #10
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QuoteOriginally posted by PapaCC Quote
So .... ANVH what is a "hug mark"?
I believe it has something to do with posting on Valentines Day .
02-14-2013, 05:53 PM   #11
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QuoteOriginally posted by PapaCC Quote
So .... ANVH what is a "hug mark"? Something like this:



Maybe I could loan you an "e". Would you like to buy a vowel?
Sounds like a great idea XD
02-14-2013, 05:55 PM   #12
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QuoteOriginally posted by Ex Finn. Quote
I believe it has something to do with posting on Valentines Day .
You need to hug very tightly to leave a mark though, i'm often more gentle with my female companions.
02-14-2013, 06:11 PM   #13
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QuoteOriginally posted by Anvh Quote
You need to hug very tightly to leave a mark though, i'm often more gentle with my female companions.
I hear you .
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