Mark inside the lens - a problem?

donpjt · 11-12-2014, 11:08 PM

Hi All,

I recently purchased a 50mm D-FA 2.8 Macro lens from KEH and I'm really happy with the pictures that I am getting. However today when I was cleaning the lens I found there was a mark inside the border of the side which goes in the camera body. I am posting a picture and circled it in red. Do you think this could be a problem? Since its a full frame lens maybe the problem is not noticeable in my K-30, but if I ever use a FF camera then it might be evident on the picture. I still am within the 14 day return period, its been 10 days. so I am wondering whether I should return it.
Please help me out!

PS: I tried cleaning it, but its on the other side (not outside)

Attached Images

Last edited by donpjt; 11-12-2014 at 11:16 PM.

**sergysergy** · 11-12-2014, 11:19 PM

It is difficult to tell from the images but if it is fungus it could be a problem. Was the problem noted in the description? If not I would give them a call or return it.

**Deimos** · 11-12-2014, 11:44 PM

Hard to tell from the photo but it could be fungus, especially if it looks webby or growth-like up close. It is possible its just a smudge or something, cant tell from the photo. If it doesnt clean off I'd send it back

**Madaboutpix** · 11-13-2014, 12:11 AM

If it wasn't mentioned in the description, I'd send it back without delay within that 14-day period. For one thing, I'd feel cheated. And then imperfections on the rear lens tend to have a much larger effect on IQ than those on front lenses.

Now, you're saying you are happy with your images, and maybe it's just my general gear pickiness, which hasn't let me buy used yet. However, what conceivably could be fungus in a lens purchase is a no-go in my book. Ultimately, it's your call.

Last edited by Madaboutpix; 11-13-2014 at 12:12 AM. Reason: typo

Apapukas · 11-13-2014, 03:28 AM

I would definitely return it, except if the price was so damn good, you can send it for cleaning and still consider it a good deal.

MarkJerling · 11-13-2014, 03:40 AM

That looks like fungus. I would suggest you return the lens.

donpjt · 11-13-2014, 08:09 AM

Thanks for the input! I got the RMA and they said they would get it exchanged as they have another one with them now. Hopefully that one will turn out to be a better one. I purchased the lens in EX condition from KEH. I was surpised to see the mark and even more surprised I did not catch it when I inspected it the day I received it. Must have been too excited :P All in all I got it for 280 shipped, not exactly a great deal, but a good one

stevebrot · 11-13-2014, 07:47 PM

Originally posted by donpjt

I was surpised to see the mark and even more surprised I did not catch it when I inspected it the day I received it.

KEH has super good post-sale support and replacement response. Usually they are also very, very accurate in regard to condition. I am surprised this slipped past them.

Steve

donpjt · 11-14-2014, 08:06 AM

Originally posted by stevebrot

KEH has super good post-sale support and replacement response. Usually they are also very, very accurate in regard to condition. I am surprised this slipped past them.

Steve

I was also pretty surprised that they missed it. Either way I put in a pic of the problem with the return just to make sure they don't miss it again and sell it with that problem to someone else

Na Horuk · 11-15-2014, 07:32 AM

or at least ask for a partial refund and keep the lens. But make sure its not fungus! And either way write an email about it to keh. Then you can still wait or talk it over.

11-12-2014, 11:08 PM	#1
donpjt Senior Member Join Date: Apr 2014 Location: Houston, TX Photos: Gallery Posts: 190	Mark inside the lens - a problem? Hi All, I recently purchased a 50mm D-FA 2.8 Macro lens from KEH and I'm really happy with the pictures that I am getting. However today when I was cleaning the lens I found there was a mark inside the border of the side which goes in the camera body. I am posting a picture and circled it in red. Do you think this could be a problem? Since its a full frame lens maybe the problem is not noticeable in my K-30, but if I ever use a FF camera then it might be evident on the picture. I still am within the 14 day return period, its been 10 days. so I am wondering whether I should return it. Please help me out! PS: I tried cleaning it, but its on the other side (not outside) Attached Images Last edited by donpjt; 11-12-2014 at 11:16 PM.

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11-12-2014, 11:19 PM	#2
sergysergy Site Supporter Join Date: Jan 2011 Photos: Gallery Posts: 5,175	It is difficult to tell from the images but if it is fungus it could be a problem. Was the problem noted in the description? If not I would give them a call or return it.

11-12-2014, 11:44 PM	#3
Deimos Site Supporter Join Date: Oct 2010 Location: Kingdom of Wonder Posts: 1,777	Hard to tell from the photo but it could be fungus, especially if it looks webby or growth-like up close. It is possible its just a smudge or something, cant tell from the photo. If it doesnt clean off I'd send it back

11-13-2014, 12:11 AM	#4
Madaboutpix Site Supporter Join Date: Dec 2011 Location: North Rhine-Westphalia Posts: 1,448	If it wasn't mentioned in the description, I'd send it back without delay within that 14-day period. For one thing, I'd feel cheated. And then imperfections on the rear lens tend to have a much larger effect on IQ than those on front lenses. Now, you're saying you are happy with your images, and maybe it's just my general gear pickiness, which hasn't let me buy used yet. However, what conceivably could be fungus in a lens purchase is a no-go in my book. Ultimately, it's your call. Last edited by Madaboutpix; 11-13-2014 at 12:12 AM. Reason: typo

11-13-2014, 03:28 AM	#5
Apapukas Inactive Account Join Date: Oct 2012 Location: Lietuva, Vilnius Posts: 627	I would definitely return it, except if the price was so damn good, you can send it for cleaning and still consider it a good deal.

11-13-2014, 03:40 AM	#6
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,423	That looks like fungus. I would suggest you return the lens.

11-13-2014, 08:09 AM	#7
donpjt Senior Member Join Date: Apr 2014 Location: Houston, TX Photos: Gallery Posts: 190 Original Poster	Thanks for the input! I got the RMA and they said they would get it exchanged as they have another one with them now. Hopefully that one will turn out to be a better one. I purchased the lens in EX condition from KEH. I was surpised to see the mark and even more surprised I did not catch it when I inspected it the day I received it. Must have been too excited :P All in all I got it for 280 shipped, not exactly a great deal, but a good one

11-13-2014, 07:47 PM	#8
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by donpjt I was surpised to see the mark and even more surprised I did not catch it when I inspected it the day I received it. KEH has super good post-sale support and replacement response. Usually they are also very, very accurate in regard to condition. I am surprised this slipped past them. Steve

11-14-2014, 08:06 AM	#9
donpjt Senior Member Join Date: Apr 2014 Location: Houston, TX Photos: Gallery Posts: 190 Original Poster	Originally posted by stevebrot KEH has super good post-sale support and replacement response. Usually they are also very, very accurate in regard to condition. I am surprised this slipped past them. Steve I was also pretty surprised that they missed it. Either way I put in a pic of the problem with the return just to make sure they don't miss it again and sell it with that problem to someone else

11-15-2014, 07:32 AM	#10
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	or at least ask for a partial refund and keep the lens. But make sure its not fungus! And either way write an email about it to keh. Then you can still wait or talk it over.