During a recent sunny weekend, I had the opportunity to take a couple of test shots against a nice blue sky and check the extent of vignetting with the new Nikon 600mm f/4 E Fluorite lens. I had noticed before that the 600mm does vignette with a TC-14E III teleconverter attached on my trip to Alaska, as also reported on various photography forums.
Luckily I still have the ‘old’ (TC-14E II) next to the new TC-14E III teleconverter and so I decided to do some comparative analysis: how bad is the vignetting with both teleconverters, and how easily is it corrected? And what about vignetting without a teleconverter?
For those of you who are not so interested in apertures, shutter speeds, vignetting and other photography ‘tech talk’, just skip to the end of this article for a nice image I took in Kootenay National Park, British Columbia, Canada about 4 years ago (and took me 4 years to post, more on that below…).
So let’s get started. First, the standard configuration for those who need that extra reach: the 600mm + Nikon’s latest TC-14E III teleconverter.
As expected, and reported, a rather nasty vignette that requires some post-processing correction. I’m using Adobe’s Camera RAW (ACR), part of Adobe’s PhotoShop Creative Cloud.
Unfortunately, you can’t get rid of the vignette completely: small dark corners remain. The only option is to crop; i.e. remove part of the image. This shouldn’t be a big issue in most cases, but it’s not ideal. If we stop down by 1 stop; so f/8, the result should improve:
Much better indeed, but still those small dark corners. Let’s see if these can be removed in ACR:
The dark corners have almost disappeared; however I would still crop a little if I need to have my entire image at the same brightness…
Now, one would expect: newer versions of technology are better compared to their older versions, right? Just like the new Nikon 600m is expected to perform better against the older – which I’ve written about earlier, etc. So surely, the old teleconverter would not outperform the newer (and more expensive) version, right?
Hmm strange, the ‘old’ TC-14E II teleconverter also shows vignetting, but less pronounced; i.e. the corners are smoother compared to the new TC-14E II. And if that is correct, post-processing should be able to fix this better:
Wow, vignetting is pretty much gone, shot wide open at f5.6. How about stopping down to f/8?
Without even applying corrections in ACR, there’s hardly any vignetting. and if that’s correct, the image should be near perfect after post-processing in ACR:
And so it is! Vignetting is pretty much gone. So where does this leave us?
Yes, the new Nikon Nikon 600mm f/4 E Fluorite lens does vignette with a 1.4 teleconverter attached. Is this related to the 600mm f/4 lens or the teleconverter? Or both? Well, the test shots above demonstrate that the vignetting is at least partly due to the TC-14E III teleconverter. The older TC-14E II produces less vignetting, and it is more easily corrected in post-processing.
But this means that Nikon has created a newer version of its 1.4 teleconverter with less quality. By the way… I did also check for sharpness differences in the images and I couldn’t find any. Why on earth would such a high-tech company come up with new technology with reduced quality? If anybody has the answer, I’d be very keen to hear and understand!
Let’s just check the vignetting of the Nikon 600mm f/4 E Fluorite lens without any teleconverters attached. Perhaps I missed something after all…
Definitely visible vignetting, however quite smooth and expected to easily correct in ACR.
And indeed; vignetting pretty much gone after applying the corrections in ACR. What about the differences between wide open (f/4) and f/5.6?
Vignetting is visibly less compared to f/4, and still ‘smooth’ so expected to be easily removed in ACR.
Exactly, just minute traces left of vignetting after playing around in ACR.
It’s conclusion time:
I will seriously consider taking the TC-14E II with me going forward and use it when I need to reach 800+mm. The TC-14E III will stay in the bag (or I’ll sell it…).
Now for the image below: this bad boy (or girl) was walking close to the Kootenay highway back in 2012 (or thereabouts) when I was driving there with a well-known Canadian professional wildlife photographer. In fact, he spotted this coyote first and stopped the car after we took our gear and started to take our first shots. I had my (new) Nikon D4 and my (also new) Nikon 400mm f/2.8 G AF-S ED VR lens (the ‘previous’ model). It was early morning and some of my shots were OK, some were horrible, and some were nice except for the totally failed white balance. I guess the D4 had a hard time with the greens of the fields, blues from the sky, and brown/reds of the coyote against the early morning sun.
Just a couple of weeks ago (so 4 years later) I decided to give it another try using ACR, PhotoShop CC and the Nik suite, and I finally managed to get my coyote to look as I remembered it…
Nikon 400mm f/2.8 G on Nikon D4, f/5.6, 1/400 s., ISO 1400
Please note that these images are protected by copyright and are not allowed to be used in any commercial way. If you’re interested in personal use only (like using as personal desktop/tablet/mobile background) then that’s fine; however any other use is prohibited by law.
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