Do all teleconverters degrade image quality?

9 years 9 months ago #250542 by DJMarcus
Are there any teleconverters that won't degrade image quality? I was told to stay away from 2x teleconverters, but what about the 1.4x or 1.7x?


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9 years 9 months ago #250589 by Gene.Culley
I don't know about degrading shots, it will slow things down a bit


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9 years 9 months ago #250603 by Baydream
Adding the extra glass will degrade. Better 1.4 TCs will have the least effect.

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9 years 9 months ago - 9 years 9 months ago #250644 by Henry Peach
Do some personal testing, and see what you think. The common advice is that yes, teleconverters are not as good as a lens of the desired focal length. But you would be better off seeing it with your own eyes, and making your own opinion.

A long time ago I saw a portfolio of surfing shots. They were these awesome shots of surfers riding waves against a giant sun. The photographer was stacking 3 and 4 teleconverters together to get the shots. Now that's crazy, because we all know you aren't supposed to do that, but he broke the rules that we all follow, and that's why his photos looked so unique.

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9 years 9 months ago - 9 years 9 months ago #250754 by effron

DJMarcus wrote: Are there any teleconverters that won't degrade image quality? I was told to stay away from 2x teleconverters, but what about the 1.4x or 1.7x?


Not all 2x TCs are the same.
Here is a pretty involved review.......
mansurovs.com/nikon-tc-20e-iii-review

Why so serious?
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9 years 9 months ago #250755 by chasrich

Henry Peach wrote: Do some personal testing, and see what you think. The common advice is that yes, teleconverters are not as good as a lens of the desired focal length. But you would be better off seeing it with your own eyes, and making your own opinion.

A long time ago I saw a portfolio of surfing shots. They were these awesome shots of surfers riding waves against a giant sun. The photographer was stacking 3 and 4 teleconverters together to get the shots. Now that's crazy, because we all know you aren't supposed to do that, but he broke the rules that we all follow, and that's why his photos looked so unique.


I need to get my white lab coat from the cleaners... I love stacking stuff! :woohoo:

“Amateurs worry about equipment, professionals worry about money, masters worry about light, I just make pictures… ” ~ Vernon Trent

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9 years 9 months ago #250770 by Henry Peach

chasrich wrote:

Henry Peach wrote: Do some personal testing, and see what you think. The common advice is that yes, teleconverters are not as good as a lens of the desired focal length. But you would be better off seeing it with your own eyes, and making your own opinion.

A long time ago I saw a portfolio of surfing shots. They were these awesome shots of surfers riding waves against a giant sun. The photographer was stacking 3 and 4 teleconverters together to get the shots. Now that's crazy, because we all know you aren't supposed to do that, but he broke the rules that we all follow, and that's why his photos looked so unique.


I need to get my white lab coat from the cleaners... I love stacking stuff! :woohoo:


Remember that each x2 isn't added, it's multiplied, so 2 x2 TC block 4 stops, 3 block 8 stops, 4 block 16 stops....
The following user(s) said Thank You: chasrich

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9 years 9 months ago #250803 by Joves
:agree:
Well I have a feeling that with the newer High ISO sensors that the loss in stops at one point will not be relevant. Then it comes down to optical elements and image degradation. I have never been a fan of TCs, but if you are on a budget and want reach they are a great option. The 2x have always been hell nos in my opinion. A lot of the image degradation can be due to a couple of things, vibration being one. So using a mirror lock and a good sturdy tripod will eliminate that problem.
To DJ yes some do. It depends on the quality. This is an area where cheap and good do not meet. I know many people have been satisfied with the Kenko Pro Series TCs. What I find ironic is that Kenko makes one that will work fully with my 80-400 lens, and Nikon does not. You can go to B&H and read the user comments on the Kenkos. Anytime I have had a 1.7x in my film days they were all terrible. I do not know why the 1.7 never seems to be any good. Fact is I have had 2x TCs that were better. The 1.4 have always been the least evil.


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9 years 9 months ago #250804 by Screamin Scott
Any time you introduce additional glass surfaces into the equation that were not part of the original optical design, there will be some loss of image quality. How much depends both the TC & the lens it's being used on. In older film days, they made TC's that were matched to specific lenses & thus gave better results when used with those lenses. Only thing you can do it to try them out & if you don't like the results, return them or sell them off (depending on where you get them from)

Scott Ditzel Photography

www.flickr.com/photos/screaminscott/

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