This site doesn’t allow pinning to Pinterest or posting of any content by secondary parties to Facebook or MySpace. Any infringement of copyrighted property will be met with a) a Digital Millennium Copyright Act takedown notice, b) a bill for usage of any images and c) a potential lawsuit for copyright infringement. Spam comments will be deleted (links to other services not related to photography are not welcome in this blog; please e-mail me prior to posting a comment containing such links. I do not support any links to secondary photography services that do not offer customer service guarantees). Please contact the owner with any questions. Thanks for visiting!

Sunday, October 2, 2011

Is the TC-20EIII Worth It?

Now...for the past 6 months, I've been vascillating between lenses and teleconverters and I've been wondering if buying a teleconverter for the lens that I currently have (the AF-S VRII 70-200mm f/2.8 G ED) is worth the money expended on it. In determining the value of the TC-20EIII on the lens, I've undertaken the following test on this particular teleconverter to where I would be using the TC-20EIII the most - Green Timbers Urban Forest Park. The TC-20EIII attached to my 70-200mm f/2.8 would get me the equivalent focal length of a 140-400mm f/5.6 as I would lose the equivalent of two stops.

The Park Test - had to mimic the TC-20EIII on the lens by % increase of 200%

The Great Blue Heron Subject at 200mm

The Great Blue Heron Subject at 400mm (equiv w/% tweaking)

The Store Test - with the actual TC-20EIII attached to the 70-200mm f/2.8 VRII.


@400mm (the subject being the blue line on the door)

Ultimately there is not much increase in the size of far-away objects with the TC-20EIII and there is a noticeable drop-off in image quality especially when used indoors as in the mall-test. The only other alternative is to get the 300mm f/2.8 VRII but that is quite a number of years away.

300mm range (shot with my 70-300mm f/4-5.6)

600mm equivalent range (TC-20EIII on 300mm f/2.8 equivalent (digi-tweaked))

It's all fine well and good if you're standing in the middle of a field to use your legs and get closer to the wildlife in question, but when you've got a skittish heron or other subject and the barrier in between you and getting closer is a lake...well, kinetic zoom is just out of luck. When you are stuck on the shore of a lake, a longer super-telephoto lens is your best bet for getting distance. However, if you haven't got the $$$ to cough up at least $10,000 for a 400mm, 500mm, or 600mm lens, a teleconverter may be your best friend, then you may end up having to crop to get the image you want.

For now, I think that the best solution for my distance problem is to get the TC-20EIII and use it in conjunction with trying to get as close as possible to the subject.

No comments:

Post a Comment