Nikon TC-20E III AF-S Tele Converter for Camera

Product Information

In the case above, both teleconverters increase the amount of chromatic aberration. However, it depends on the exact aperture you’re using – at narrow apertures, the 2.0x teleconverter is adding about a full pixel of additional chromatic aberration. Elsewhere, both TCs add about 0.5 pixels. He is a Fellow of The Royal Society of Arts, holds a Foundation Degree in Equitation Science and is a Master of Arts in Publishing. He is member of Nikon NPS and has been a Nikon user since the film days using a Nikon F5 and saw the digital transition with Nikon's D series cameras and is still to this day the youngest member to be elected in to BEWA, The British Equestrian Writers' Association.

The story is extremely similar here – both teleconverters have a negative impact on sharpness, with the 2.0x TC being a clear notch worse. But as before, the 70-200mm f/2.8 is such a sharp lens that you have room to spare. Both of these results are still completely usable, and the 1.4x result in particular is quite good. Talking of technical, I do hear a lot of people say, especially in videography, “Well with today’s higher resolutions, why don’t you just crop in later, it’s kind of the same thing the converter’s doing.” True, in a sense, but, personally, I just don’t get that. You frame shots and react to the movement and action in front of you completely differently when you are using the viewfinder or LCD screen. Trying to think what the middle 50% of your frame would be like just feels like guesswork. Plus, you are sacrificing image quality in another way, so it’s a trade-off I don’t see any value in. People worry waaaaay too much about lens sharpness. It's not 1968 anymore when lenses often weren't that sharp and there could be significant differences among them; ever since about 2010 all new lenses are all pretty much equally fantastic. Distortion is not very important for most of the sports and wildlife photographers who will be shooting with teleconverters. That said, both of the teleconverters change the distortion characteristics of the lens you’re using. Filter-thread: no need to buy new ones. The same filters still can be used at the front of the lens. Which in case of the Nikon Z 70-200mm f2.8 VR S are 77mm diameter. [+]

Weight: 220g (7.8 oz.) for the TC-1.4x, 265g (9.4 oz.) for the TC-2.0x. Both TCs are massive affairs with fully metal bodies and no moving mechanical parts. The F TCs are 190g and 330g resp. [0] Your teleconverter must include a U. S. A. warranty card like the one shown above from Nikon, Inc. The U. S. A. office is Nikon, Inc.; the Japanese headquarters is Nikon Corporation. The card should be inside your box. The serial number on the card must match the serial number on the bottom of your teleconverter: The lenses with f/11 for both “Acceptable” and “Optimal” sharpness produce very unreliable results. NIKON D3S + 70-200mm f/2.8 @ 370mm, ISO 280, 1/1250, f/8.0 Lens Construction and Handling First up, and most obvious, is that the addition of this extra stage into the light path reduces a lens’ maximum aperture. The reason converters are in 1.4x and 2x formats is because you end up with a one stop loss with a 1.4x converter, and two stops for the 2x.

The TCs principally work with lenses corrected for full-frame sensors or smaller. Unfortunately the Nikon teleconverters don’t work with every Z lens: only the Z 70-200mm f2.8 VR S can be used with TCs so far. [0] If you don't have this card, if the card doesn't say "VALID IN THE CONTINENTAL UNITED STATES" or the serial number on the card doesn't match the one on the bottom of your teleconverter exactly, you got ripped off with a gray market version from another country. All legitimate cameras and lenses come with printed warranty cards, even if you prefer to register online. (The serial number on the outside of the box doesn't have to match, but if it doesn't it means you bought from a shady dealer who took cameras lenses out of boxes and then resold these used lenses cameras as new.) This Z 2× Teleconverter doubles a lens' focal length, but also doubles its maximum aperture, making it two stops slower and requiring a shutter speed four times as long, a four times higher ISO, or a combination of the two. Of course at smaller apertures it;s all the same, but with long lenses we're usually shooting at maximum aperture to stop action and/or camera shake. Thus the many small regions of localized softness you may see are not caused by the lens, but by the heat shimmer. The lens is accurately recording it.Some makers, such as Nikon, produce intermediate 1.7x teleconverters. 2) Teleconverters affect the maximum aperture The score in the “features-department” is 2[-]/5[0]/6[+]. The biggest disadvantage when using teleconverters is the reduction in focal ratio by 1 stop for the TC-1.4x and 2 stops for the TC-2.0x. But that is the laws of optics at work – and not the fault of Nikon. The other [-] is the inability to use the new TCs in combination with the FTZ-adapter. Not sure how good the image quality would have been. But Nikon deliberately precluded this combination so we will never know. You may also not like the relatively high price compared to the street price of Nikon’s F-mount TCs. But if the optics are good the teleconverters are worth their money. Nikon stopped offering 5-year lens warranties in 2021 in an effort to save themselves money at our expense.