Product Reviews

I had a lot of reservations on getting this 2x teleconverter as I have seen a lot of reports of significant optical quality loss and blurry images on the 100-400gm. I ordered it anyways to test for myself, knowing that I could just return it if the quality was not up to par. The 2x TC turns the 100-400mm to a 200-800mm. In APS-C crop mode on a full-frame Sony you get a 300mm-1200mm lens! Most of these shots I've included are at the far end of that range and excellent quality. I think the reports specific to the moon being blurry with the 2x TC relates to the fact that punched in to that extreme length there are a lot more variables at play. For one you need a really stable tripod and should manually focus on the moon to ensure it is crispy sharp. The rest of the photos i've included were using autofocus on a Sony a7c or a Sony a7s iii.

I had used it for 1 month, mainly using for bird and moon. 1. Need to lot of light 2. Sharpness is there. 3. It is heavy, need some physical training I like this product. The pictures is taken 200-600G + 2x Teleconverter + Handheld. The picture is cropped.

This is a great upgrade to my kit I love using it and my photos show it

Bought to use with my Sony 300mm f2.8 gm lens .Image quality is superb This allows me to get closer views for my nature and wildlife photography.

Excellent product,I’m using it with my 300 2.8 and 600 f4

Bought it less than a month. Took some architecture building shoot. was great with the lens, fast focus.

Superb build and quality. Little loss of quality when used with my Sony 70-200 2.8 GM MK II

Perfect for my 100-400GM lens with no apparent loss of sharpness or detail. Obviously the aperture takes a small hit but with a modern full frame camera with good ISO ability this isn't really a problem in decent light.

I had my eyes on this lens ever since I head about it. The flexibility to give an extra reach for my 70-200mm but at a fraction of the cost and weight was a no-brainer. What was sweeter was I bought it when it was on sale. The quality is superb despite having 2 stops drop but when the range it adds to my tele, the compression results is awesome. Lightweight, compact, ready to pair with my 70-200, and it's always in my camera bag.

My Len is 70-200 , with teleconverter, it becomes 140-400. It is lighter and easy to carry along in outdoor shooting.

Image quality is still excellent even with this 2x teleconverter. The main drawback in using this is the effective aperture reduces by 2 stops and although this is well publicised, one of the effects of this is that focussing tends to be slower using the teleconverter compared with the main lens only.

REACHING THE ZENITH OF OPTICAL EXCELLENCE WITHIN A COMPACT DESIGN

I bought this to use with my A1 and 100-400 zoom and it works perfectly - I’m impressed!

Got this for my 600 f4 but end up stick to the 70-200 gm 2 to be used as secondary wildlife lens. Optical quality drop - yes, but for the extra reach and convenience over owning another lens, totally acceptable. AF is very responsive too.

Useful with my telephoto lens to bring wildlife subjects even nearer

Loved this convertor, although the performance was a bit affected, picture quality is still good

Losing 2 f-stops means you need to be fully mindful on how to use this combination. With careful selection of shutter speed when shooting @ f13, you can still achieve acceptable results - with softer edges. The extra reach translates to added flexibility in composition of my shots.

Lens works well, but the f stop drops to 13 for my 200-600mm lens. This means I could use the lens only umder bright sunlight.

Great to have this 2x TC as an option. Doesn't degrade image quality as much as I thought.

the 2x TC I used to take picture with me 600 mm 4/l lens and it is very good and fast focused

Great for Video reach of course but for photos on the A7R4? Just crop-in as the image looks basically identical.

I wondered if this would have a big adverse impact on the quality of images that i get from my 100-400 gm lens. Clearly you do lose a lot of light, but the autofocus is still excellent and the the 800 mm reach that this can give me is fantastic for wildlife photography. It is very easy to insert between the camera and lens and hardly adds to the weight at all. Very please

I used Sony's 2X convertor with with Sony's 200mm-600mm FANTASTIC lens attached to Sony's A6500 on a tripod. Set @ 600mm focal length. EQIV= 1,800 focal length, F13. "AZALEA" Distance from flower to camera sensor 22 feet.(estimate)

This is perfect for my Sony 100-400 mm lens and a7Riii. Should have bought this one instead of my 1.4 teleconverter last year. Big Manfrotto tripod with gear head makes it easy to take photos of ships in the harbor, 3 miles away, 800 mm.

I have not had this converter long. It is however proving to have been an excellent purchase. used with my FE 70-200 it really does the business and gets the shots that wold otherwise have been impracticable.

I bought teleconverter last month agoand i am happy with that

if you need that extra length for wildlife then this is the teleconverter for you amazing quality used with the 200mm x 600mm sony lens

Bought this for with my 70 to 200mm G Master - works a tear.

Not good for my 100-400mm under low light conditio

I wanted to extend the reach of my Sony A7iii and 70-200f2.8GM for occasional wildlife shots and couldn't justify the 100-400GM so turned to the 2x convertor. I have not been disappointed as the combination retains superb image quality and the fast autofocus/tracking that these camera achieve. The convertor is very well constructed and comes in its own soft case for protection. Its fit and go and is transparent in use, apart from dropping widest aperture to 5.6, but I figured I can compensate by ramping up the ISO. The purchase has been everything I was hoping for, allowing me much closer shots of wildlife (and anything else for that matter!), is fast and accurate to focus and IQ is excellent. For example, it locked onto a small swarm of flying insects, followed them and I was able to take a sharp shot of them. It also tracked a duck taking off and remained locked on the focus even though it flew beyond a tree. It has really expanded my interest and ability in wildlife and action shots without costing the earth. Would I recommend it? Yes, at the drop of a hat!.

I love this combination it give the reach and moment . All the below photo had not been edit. I got the teleconverter because i dont had the reach for G MASTER 70 / 200. Geat combination

Since 6 months now, I am using this teleconverter with the G Master FE 100-400mm super-telephoto zoom lens (SEL100400GM), mostly for wildlife photography. Converting that lens to 200-800mm range, it allows me to get close-up shots of small birds and animals that are quite far away. I am absolutely happy with the image quality even in this combination (usually using it at 800mm), and with modern cameras like the A7 series, allowing high ISO setting with little loss of quality, the small aperture is no problem for the speed. Thanks to the image stabilisation and light weight I can even use it without a tripod, and routinely do that.

Okay, here's the thing, I got this because I was a little frustrated that the 70 - 200 mm zoom only goes to 200. I've never used a converter before. Maybe I'm naive, but what I didn't realize is that F2.8, one of the huge selling points of the zoom lens, is no longer possible. Instead F5.6, I believe, is the fastest the lens + converter will go. This is very bittersweet, especially given the price of the converter. If this fact had be publicized in any fashion, I may not have purchased the converter -- but I can't find it anywhere in Sony's specs. That said, optically it's very solid & takes great images. Just don't don't expect a super shallow depth of field or the ability to shoot sports in lower lighting conditions without compromise.

I mainly use this with my 100-400 lens - an excellent combination for distance, wildlife & detail photography.

I bought 2x Teleconverter Lens recently for my SONY GM FE 100-400mm F4.5-5.6. This extends the FE lens to 200-800mm to photograph birds and use for macro photography as well. I do not experience any slow down in focusing and the image is sharp as well. I am happy with it.

There is no picture degradation on the use of the 2x TC as far as I can see.

Purchased to use with the 70-200 and results are excellent, there is a slight loss in quality but better than expected when adding more glass to a lens, I am looking forward to testing with the new 100-400 when released. However it is an expensive 2x converter, would I purchase again, absolutely..