blue spot!!.. please take a look and tell me what do you think!!

Robin Probyn · February 10th, 2014, 10:07 PM

Hi

Sorry I might have misread .. are you using an SD lens ..? coating is different to HD lenses..

Noa Put · February 11th, 2014, 03:02 AM

Quote:

Noa, you intended lens! not camera?! I imagine! or not?

Well, I"m not a camera or lens specialist but I guess the guys at the repairshop are, since you never can be sure if the problem is with the camera body or lens the most safe thing to do would be to send both in I guess.

Dave Blackhurst · February 11th, 2014, 05:07 PM

Speaking as a "fix-it" guy... usually it's best to bring in "everything" if you aren't sure!

BUT, in this case, where the "problem" seems to be isolate-able, probably don't "have" to have the camera in the shop if it's just lenses that need cleaning (that, and maybe less shooting into bright lights if possible).

Sometimes the best advice goes something like this:

Patient: Hey doc, it hurts when I do THIS...

Doc: well DON'T DO THAT!!

Little bits of dust and dirt are a real serious nuisance though!! And humidity related "issues"... and spilled beer... and angry girlfriends... but that's another story for another time. In short, after a while in the repair biz, you start to see what causes many product failure modes <wink>!

Samer Aslan · February 11th, 2014, 07:51 PM

Hi Robin,yes, it's sd lens!.. I hope to do the tests with both camera's soon but the weather is not helping!!
It's raining everyday all day:((

Robin Probyn · February 13th, 2014, 11:50 PM

I was told way back that SD lenses on an HD camera could have "color problems" due to the coating being different.. not sure if that was just the manufacturers talking their book,although it was a well respected tech guy who told me that.. although there again I don't think that would cause that bright blu spot.. but generally I do believe you need the higher spec construction /tolerances of an HD lens with HD camera,s..

Uli Mors · February 14th, 2014, 09:58 AM

Hi,

the A-Series (especially WA, long zoom) is surely not a perfect lens regarding HD, you´ll face heavy Chromatic Abberrations in contrasty scenes and quite a soft picture.

But depart from that your blue spot isnt a normal "SD Lens" thing.
I am sure its a kind of flare inside the lens or leaking light coming into the barrel.

To sort that out I´d recommend to visit a collegue with an std HD-Lens and make an A/B comparison.

Best regards

ULI

February 10th, 2014, 10:07 PM	#16
Robin Probyn Major Player Join Date: Jan 2010 Location: Tokyo Posts: 590	Re: blue spot!!.. please take a look and tell me what do you think!! Hi Sorry I might have misread .. are you using an SD lens ..? coating is different to HD lenses..

February 11th, 2014, 05:07 PM	#18
Dave Blackhurst Inner Circle Join Date: Feb 2007 Location: Apple Valley CA Posts: 4,874	Re: blue spot!!.. please take a look and tell me what do you think!! Speaking as a "fix-it" guy... usually it's best to bring in "everything" if you aren't sure! BUT, in this case, where the "problem" seems to be isolate-able, probably don't "have" to have the camera in the shop if it's just lenses that need cleaning (that, and maybe less shooting into bright lights if possible). Sometimes the best advice goes something like this: Patient: Hey doc, it hurts when I do THIS... Doc: well DON'T DO THAT!! Little bits of dust and dirt are a real serious nuisance though!! And humidity related "issues"... and spilled beer... and angry girlfriends... but that's another story for another time. In short, after a while in the repair biz, you start to see what causes many product failure modes <wink>!

February 11th, 2014, 07:51 PM	#19
Samer Aslan Regular Crew Join Date: Apr 2010 Location: Padua/Venice - Italy Posts: 131	Re: blue spot!!.. please take a look and tell me what do you think!! Hi Robin,yes, it's sd lens!.. I hope to do the tests with both camera's soon but the weather is not helping!! It's raining everyday all day:(( __________________ PDW-F800.PXW-X200.Odyssey7Q+.A7S.www.videoshot.it-Videoshot

February 13th, 2014, 11:50 PM	#20
Robin Probyn Major Player Join Date: Jan 2010 Location: Tokyo Posts: 590	Re: blue spot!!.. please take a look and tell me what do you think!! I was told way back that SD lenses on an HD camera could have "color problems" due to the coating being different.. not sure if that was just the manufacturers talking their book,although it was a well respected tech guy who told me that.. although there again I don't think that would cause that bright blu spot.. but generally I do believe you need the higher spec construction /tolerances of an HD lens with HD camera,s..

February 14th, 2014, 09:58 AM	#21
Uli Mors Major Player Join Date: May 2006 Location: Germany Posts: 565	Re: blue spot!!.. please take a look and tell me what do you think!! Hi, the A-Series (especially WA, long zoom) is surely not a perfect lens regarding HD, you´ll face heavy Chromatic Abberrations in contrasty scenes and quite a soft picture. But depart from that your blue spot isnt a normal "SD Lens" thing. I am sure its a kind of flare inside the lens or leaking light coming into the barrel. To sort that out I´d recommend to visit a collegue with an std HD-Lens and make an A/B comparison. Best regards ULI