A teleconverter or extender (as Canon calls them) is a gadget that fits between the lens and the camera body to magnify the image made by the lens.A teleconverter sounds like the ideal solution for getting closer to a subject with your lens. Desert Floor as Seen from Six Miles (10 km) Away, 2:22 PM, Thursday, 10 November 2022. Nikon Z7II, Nikon Z 400mm f/4.5 VR with Z TC 1.4× teleconverter (making this a 560mm lens) wide-open at f/6.3 hand-held at 1/ 640 at Auto ISO 64 ( LV15.3), Radiant Photo Software to cut through the haze. bigger or full resolution. Too good to be true? As in life, there are some trade-offs, which is why teleconverters have faced criticism in the past when compared to a ‘real’ 600mm, for example.

the results are great with 300mm and longer fixed AF-I and AF-S lenses, but only so-so with the 80-200 AF-S and 70-200mm VR zooms. Not bad! The biggest sharpness robber here are atmospheric conditions and the fact that these palms are not lying in the same plane, so most of them are simply out of focus. If you look carefully at the full resolution files, you'll see all sorts of weird distortions of the subject, as if you're looking through water to the bottom of a pool. This is exactly the same effect. It's called heat shimmer. Air refracts light differently based on its density, and air's density varies with its temperature. In the real world air is always at different temperatures in different places, and as the air moves around it creates waves the same way. 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.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. I then added the 1.4x teleconverter, turning the lens into a 98mm lens with a maximum aperture of f/4:

AF NIKKOR lenses (those which do not have a built-in focus motor) are not compatible with the current AF-S teleconverters but may work with older manual models. (AF-S lenses are those with a built-in focus motor.) Some of the newer NIKKOR lenses can also be used with older manual focus teleconverters with limited compatibility. Functional limitations include having to manually focus the lens, shoot in manual exposure mode only, and require an accessory exposure meter due to the camera’s built-in exposure meter being rendered inactive. Vignetting or other visible image defects may also occur. The lens is sharpest at 70mm, so I wanted to test it as a best-case scenario with both TCs. I should mention, it doesn’t make a lot of sense to use a teleconverter when your zoom lens is at the widest setting – you’ll get better image quality by removing the teleconverter and just zooming in. But for testing purposes, it’s pretty revealing how the TCs interact with such a high-performing lens.The viewfinder of the Z7ii did appear crisper than the Sony (both of which were superior to a Canon R5 that I was able to try briefly on two occasions). The battery grip seems to be a more snug fit (no wobble) than the Sony grip I had. Holding it vertically felt quite nice, but holding it horizontally made my big hands feel a bit scrunched in the grip that is not quite deep enough. Sony made the grip on their recent models deeper after users complained and Nikon should do the same. The placement of function buttons next to the lens barrel means my fingers hit them inadvertently. Because the lens’s image is being enlarged, the effective lens aperture is decreased. A 1.4x teleconverter brings a one-stop reduction in maximum aperture; a 2x teleconverter brings a two-stop reduction. So, give teleconverters a chance! If you know their limitations and plan accordingly, they can be a revelation. Just think, by adding one to your bag, you’ve doubled a lot of your lens choices, added only a couple of hundred grams to your kit and spent a fraction of what one extra lens would cost.

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. Both converters are identical except for the name and trim. Both work with both AF-I and AF-S lenses. What's impressive is that the sharpness doesn't vary from center to corner, and how clearly you can see how these heat waves warp straight lines. The teleconverters come with a pouch that’s just as flimsy as the pouch of the Z lenses and has no strings to pull it close. [0] It’s not as simple as saying that you lose so-and-so-% sharpness across the frame, or X amount in the center and X amount in the corners. Instead, the sharpness you get with a lens + TC combination depends on how they interact. With some lenses, you will lose a greater amount of sharpness from a TC than with others.Similar to AF performance, lens sharpness, contrast and color rendition will depend on the lens the teleconverter is coupled with. When I used the teleconverter on the Sigma 120-300mm f/2.8 Sport, contrast decreased a little, similar to what you would see with the TC-20E III. Sharpness was certainly impacted, especially at the widest aperture of f/5.6. Stopping down to f/8 improves things a bit, as illustrated in MTF charts below. By way of comparison, here’s how the bare lens performs around the same two focal lengths, specifically 105mm and 135mm: This is a detailed review of the Sigma 2.0x Teleconverter EX APO DG for the Nikon mount. I had a chance to test out this teleconverter, along with the 1.4x Sigma teleconverter when working with the Sigma 120-300mm f/2.8 lens, so I wanted to share some of my findings and compare the teleconverter to its Nikon counterpart, the Nikkor TC-20E III. In this review, I will go over the optical characteristics of the Sigma 2.0x teleconverter and talk about its performance when using both Sigma and Nikon super-telephoto lenses.