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SMeK · 05-10-2011, 02:17 PM

So is this kind of "Line flare" normal? I noticed it on some daylight pictures with sun, but JUST when the sun is on right side. No problems when light source is on the left. With my humble eyes i cant see any schraches on lens but there is some dust inside. Can that be a problem? I wouldnt ask but I think is just weird that shows up only on left side of picture. Maybe cleaning in service would help? Once again there is SOME dust inside but nothing unusual..

examples:

Attachment 91078

Attachment 91079

Last edited by SMeK; 10-06-2011 at 02:33 PM.

Osmo · 05-10-2011, 02:34 PM

i would say something wrong in lens coating.

maybe add more images from same light source in different edge to compare.

other ways theres no way telling if this is just normal flare.

jstevewhite · 05-10-2011, 02:44 PM

Originally posted by SMeK

So is this kind of "Line flare" normal? I noticed it on some daylight pictures with sun, but JUST when the sun is on right side. No problems when light source is on the left. With my humble eyes i cant see any schraches on lens but there is some dust inside. Can that be a problem? I wouldnt ask but I think is just weird that shows up only on left side of picture. Maybe cleaning in service would help? Once again there is SOME dust inside but nothing unusual..

examples:

Attachment 91078

Attachment 91079

Does not look all that outré. You have bright light sources in-frame, you're going to get flare. The line looks more like an internal reflection, but that's hard to nail down from two images.

SMeK · 05-10-2011, 02:54 PM

Here you go. some more examples...

IF is coating, can that be fixed? Will be expensive?

Name: ckrva.jpg
Views: 439
Size: 116.2 KB

Attachment 91083

Attachment 91084

Last edited by SMeK; 10-06-2011 at 02:33 PM.

Adam · 05-10-2011, 03:00 PM

Nothing seems wrong with your lens. The star effect is normal, as is flaring if you fire a ridiculously bright light source straight through the lens.

SMeK · 05-10-2011, 03:03 PM

thanks adam and all other for responses. I just made comprasion with kit lens, an old M50 F1.7 and didnt notice this on mentioned lens. As you can see this is the case with sunlight which is not in frame :-(

enoeske · 05-10-2011, 03:20 PM

do you have any filters on the front? UV?

**pacerr** · 05-10-2011, 03:58 PM

It appears that the artifact is in the exact same spot in three different images. If so, that would suggest a reflection from something in or on the camera. The parallel lines in the first image and the non-radial nature of the artifact doesn't seem characteristic of flare to me.

H2

jstevewhite · 05-10-2011, 04:06 PM

Originally posted by pacerr

It appears that the artifact is in the exact same spot in three different images. If so, that would suggest a reflection from something in or on the camera. The parallel lines in the first image and the non-radial nature of the artifact doesn't seem characteristic of flare to me.

H2

The new images make it clear. Pacerr is right.

For what it's worth, that is on your sensor, not your lens. It might be a hair or something, but ... to me, because it's white rather than black, it looks more like a scratch. Get it checked by a competent technician.

**manishved** · 05-10-2011, 05:38 PM

Well, he did not notide it with the 50mm f/1.5 lens - must be the coating or scratches on one of the elements.

jstevewhite · 05-10-2011, 05:50 PM

Originally posted by manishved

Well, he did not notide it with the 50mm f/1.5 lens - must be the coating or scratches on one of the elements.

I would recommend that he re-test. Scratches in the coatings WILL NOT result in this sort of thing. Neither will scratches on the glass. Don't believe me? Take a piece of low-tack tape, cut a 1mm wide strip, and stick it on your lens. Try and reproduce this. Mostly, you wont' even be able to tell it's there.

Back element scratches are different, but don't produce this sort of local consistency.

twitch · 05-10-2011, 06:32 PM

Look to me like a hair on the sensor which would be visible in all situations where small apertures are used, not just bright lights. Easy to test the theory, just use 2 different lenses at f22 and shoot a white wall or blue sky.

EDIT: actually I think I'm wrong, dust/hair on the sensor would appear dark in the photo not white. hmmmm, never seen this kind of thing before.

Adam · 05-10-2011, 07:22 PM

Originally posted by SMeK

thanks adam and all other for responses. I just made comprasion with kit lens, an old M50 F1.7 and didnt notice this on mentioned lens. As you can see this is the case with sunlight which is not in frame :-(

The 50mm is not as wide and therefore less prone to flare. However, similar results should be expected in direct light.

SMeK · 05-10-2011, 10:37 PM

I have tested same lens with my brother K-x now and result is the same! So it is the lens. But what. Now I am just confused. There is one peace of dust like hair inside lens which is long 1mm, maybe less, just in front of leaves. And no there is no any filters on lens. So what do you suggest?

jstevewhite · 05-10-2011, 11:26 PM

Originally posted by SMeK

I have tested same lens with my brother K-x now and result is the same! So it is the lens. But what. Now I am just confused. There is one peace of dust like hair inside lens which is long 1mm, maybe less, just in front of leaves. And no there is no any filters on lens. So what do you suggest?

Hrm.... just near the aperture leaves, eh? If you put the same lens on another camera and it does the same thing, then you're right, can't be the sensor. Perhaps there is some point in the image path where projection is clear... I'm having a hard time imagining how an obstruction could leave a WHITE streak like that, though.

Take it to a competent technician and see if they can remove it. Best advice I can offer.

05-10-2011, 02:17 PM	#1
SMeK Senior Member Join Date: Sep 2010 Posts: 150	Is this normal!? 16-45mm flare problem! So is this kind of "Line flare" normal? I noticed it on some daylight pictures with sun, but JUST when the sun is on right side. No problems when light source is on the left. With my humble eyes i cant see any schraches on lens but there is some dust inside. Can that be a problem? I wouldnt ask but I think is just weird that shows up only on left side of picture. Maybe cleaning in service would help? Once again there is SOME dust inside but nothing unusual.. examples: Attachment 91078 Attachment 91079 Last edited by SMeK; 10-06-2011 at 02:33 PM.

05-10-2011, 02:54 PM	#4
SMeK Senior Member Join Date: Sep 2010 Posts: 150 Original Poster	Here you go. some more examples... IF is coating, can that be fixed? Will be expensive? Attachment 91083 Attachment 91084 Last edited by SMeK; 10-06-2011 at 02:33 PM.

05-10-2011, 07:22 PM	#13
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	Originally posted by SMeK thanks adam and all other for responses. I just made comprasion with kit lens, an old M50 F1.7 and didnt notice this on mentioned lens. As you can see this is the case with sunlight which is not in frame :-( The 50mm is not as wide and therefore less prone to flare. However, similar results should be expected in direct light. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-10-2011, 10:37 PM	#14
SMeK Senior Member Join Date: Sep 2010 Posts: 150 Original Poster	I have tested same lens with my brother K-x now and result is the same! So it is the lens. But what. Now I am just confused. There is one peace of dust like hair inside lens which is long 1mm, maybe less, just in front of leaves. And no there is no any filters on lens. So what do you suggest? Last edited by SMeK; 05-10-2011 at 10:48 PM.

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05-10-2011, 02:34 PM	#2
Osmo Junior Member Join Date: Sep 2009 Photos: Gallery Posts: 28	i would say something wrong in lens coating. maybe add more images from same light source in different edge to compare. other ways theres no way telling if this is just normal flare.

05-10-2011, 02:44 PM	#3
jstevewhite Veteran Member Join Date: Mar 2009 Location: Midwest Photos: Gallery Posts: 1,407	Originally posted by SMeK So is this kind of "Line flare" normal? I noticed it on some daylight pictures with sun, but JUST when the sun is on right side. No problems when light source is on the left. With my humble eyes i cant see any schraches on lens but there is some dust inside. Can that be a problem? I wouldnt ask but I think is just weird that shows up only on left side of picture. Maybe cleaning in service would help? Once again there is SOME dust inside but nothing unusual.. examples: Attachment 91078 Attachment 91079 Does not look all that outré. You have bright light sources in-frame, you're going to get flare. The line looks more like an internal reflection, but that's hard to nail down from two images.

05-10-2011, 03:00 PM	#5
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	Nothing seems wrong with your lens. The star effect is normal, as is flaring if you fire a ridiculously bright light source straight through the lens.

05-10-2011, 03:03 PM	#6
SMeK Senior Member Join Date: Sep 2010 Posts: 150 Original Poster	thanks adam and all other for responses. I just made comprasion with kit lens, an old M50 F1.7 and didnt notice this on mentioned lens. As you can see this is the case with sunlight which is not in frame :-(

05-10-2011, 03:20 PM	#7
enoeske Veteran Member Join Date: Jul 2009 Location: Surprise, Az Photos: Gallery Posts: 2,136	do you have any filters on the front? UV?

05-10-2011, 03:58 PM	#8
pacerr Loyal Site Supporter Join Date: Jan 2008 Location: Paris, TN Photos: Gallery \| Albums Posts: 3,350	It appears that the artifact is in the exact same spot in three different images. If so, that would suggest a reflection from something in or on the camera. The parallel lines in the first image and the non-radial nature of the artifact doesn't seem characteristic of flare to me. H2

05-10-2011, 04:06 PM	#9
jstevewhite Veteran Member Join Date: Mar 2009 Location: Midwest Photos: Gallery Posts: 1,407	Originally posted by pacerr It appears that the artifact is in the exact same spot in three different images. If so, that would suggest a reflection from something in or on the camera. The parallel lines in the first image and the non-radial nature of the artifact doesn't seem characteristic of flare to me. H2 The new images make it clear. Pacerr is right. For what it's worth, that is on your sensor, not your lens. It might be a hair or something, but ... to me, because it's white rather than black, it looks more like a scratch. Get it checked by a competent technician.

05-10-2011, 05:38 PM	#10
manishved Loyal Site Supporter Join Date: Mar 2008 Location: N. Calif Photos: Gallery \| Albums Posts: 3,652	Well, he did not notide it with the 50mm f/1.5 lens - must be the coating or scratches on one of the elements.

05-10-2011, 05:50 PM	#11
jstevewhite Veteran Member Join Date: Mar 2009 Location: Midwest Photos: Gallery Posts: 1,407	Originally posted by manishved Well, he did not notide it with the 50mm f/1.5 lens - must be the coating or scratches on one of the elements. I would recommend that he re-test. Scratches in the coatings WILL NOT result in this sort of thing. Neither will scratches on the glass. Don't believe me? Take a piece of low-tack tape, cut a 1mm wide strip, and stick it on your lens. Try and reproduce this. Mostly, you wont' even be able to tell it's there. Back element scratches are different, but don't produce this sort of local consistency.

05-10-2011, 06:32 PM	#12
twitch Veteran Member Join Date: Nov 2009 Posts: 4,571	Look to me like a hair on the sensor which would be visible in all situations where small apertures are used, not just bright lights. Easy to test the theory, just use 2 different lenses at f22 and shoot a white wall or blue sky. EDIT: actually I think I'm wrong, dust/hair on the sensor would appear dark in the photo not white. hmmmm, never seen this kind of thing before.

05-10-2011, 11:26 PM	#15
jstevewhite Veteran Member Join Date: Mar 2009 Location: Midwest Photos: Gallery Posts: 1,407	Originally posted by SMeK I have tested same lens with my brother K-x now and result is the same! So it is the lens. But what. Now I am just confused. There is one peace of dust like hair inside lens which is long 1mm, maybe less, just in front of leaves. And no there is no any filters on lens. So what do you suggest? Hrm.... just near the aperture leaves, eh? If you put the same lens on another camera and it does the same thing, then you're right, can't be the sensor. Perhaps there is some point in the image path where projection is clear... I'm having a hard time imagining how an obstruction could leave a WHITE streak like that, though. Take it to a competent technician and see if they can remove it. Best advice I can offer.

Is this normal!? 16-45mm flare problem!

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