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Lens Adapters
Feb 23, 2014 19:25:38   #
asjohnston3 Loc: Irving, TX
 
I recently was given a couple of PK mount macro lenses and was going to get an adapter to see if I can do anything with them with my D5100. I'm looking at adapters. Some with a 'corrective lens' & others without. Can someone tell me why a corrective lens might be needed and if they are worth the additional cost. (still relatively inexpensive)

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Feb 23, 2014 19:27:50   #
Rongnongno Loc: FL
 
"Googling"

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Feb 23, 2014 20:19:05   #
asjohnston3 Loc: Irving, TX
 
ajohnston3 wrote:
I recently was given a couple of PK mount macro lenses and was going to get an adapter to see if I can do anything with them with my D5100. I'm looking at adapters. Some with a 'corrective lens' & others without. Can someone tell me why a corrective lens might be needed and if they are worth the additional cost. (still relatively inexpensive)

Did some research and found that the corrective lens is for focus to infinity... Not really necessary for close up macro work.... & they put an additional element in which could affect the image

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Feb 23, 2014 20:52:17   #
wilsondl2 Loc: Lincoln, Nebraska
 
The corrective lenses mean porr quility most of the time. with just the adaptor they will work great. You will be able to get more than 1:1 magnifacation. Of course everything will be manual. - dave

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Feb 23, 2014 23:18:45   #
oldtigger Loc: Roanoke Virginia-USA
 
ajohnston3 wrote:
I recently was given a couple of PK mount macro lenses and was going to get an adapter to see if I can do anything with them with my D5100. I'm looking at adapters. Some with a 'corrective lens' & others without. Can someone tell me why a corrective lens might be needed and if they are worth the additional cost. (still relatively inexpensive)


instead of getting an adaptive adapter which may degrade image, get automatic extension tubes which will make your life easier and not bother the image..

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Feb 23, 2014 23:40:26   #
A-PeeR Loc: Houston, Texas
 
ajohnston3 wrote:
Did some research and found that the corrective lens is for focus to infinity... Not really necessary for close up macro work.... & they put an additional element in which could affect the image


Correct, corrective element is to focus to infinity, will degrade image quality, isn't needed for macro and costs more. Just go with the plain old milled adapter with no corrective lens, go out and shoot some macro, and enjoy....

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Feb 24, 2014 01:06:15   #
olcoach Loc: Oregon
 
A-PeeR wrote:
Correct, corrective element is to focus to infinity, will degrade image quality, isn't needed for macro and costs more. Just go with the plain old milled adapter with no corrective lens, go out and shoot some macro, and enjoy....


:thumbup: :thumbup: :thumbup:

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Feb 24, 2014 09:10:36   #
imagemeister Loc: mid east Florida
 
A-PeeR wrote:
Correct, corrective element is to focus to infinity, will degrade image quality, isn't needed for macro and costs more. Just go with the plain old milled adapter with no corrective lens, go out and shoot some macro, and enjoy....


Very well said !

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Feb 24, 2014 16:19:14   #
asjohnston3 Loc: Irving, TX
 
Thanks for the feedback everybody!!! Gotta love the "Hog" for good info.... Adapter ordered.....

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