In this YouTube video, Angie Birmingham (host of WTF Stop) conducts a side‑by‑side field test of Sony’s flagship telephoto lenses: the new Sony 70‑200mm f/2.8 GM II equipped with a 2× teleconverter, and the Sony 100‑400mm f/4.5‑5.6. Filmed at a neighborhood park and later at a fish‑cleaning table, the comparison uses a fast‑moving dog named Bailey, birds, and fishermen as real‑world subjects to evaluate autofocus speed, focus accuracy, close‑focus capability, and overall image quality. Angie walks through each lens’s physical controls (aperture ring, iris lock, stabilization modes, DMF, focus range, custom buttons), shares the shooting settings she employed (e.g., f/5.6, 1/2000 s for action shots), and presents sample images and video clips captured with each setup. The video concludes with a buying recommendation, favoring the 70‑200mm + 2× extender for its versatility and performance, and includes a call to action for likes, subscriptions, and a teaser for a future manual‑mode tutorial.
Chapters
Hello, Angie here with WTF Stop. Today we're at a neighborhood park and we are going to be doing a comparison between the 70-200mm f/2.8, the new version. We're gonna put the 2x extender on that to see how it compares to the 100-400 Sony version. Today our subject is going to be Bailey because she's so cute and super fast, and she would be really good for our autofocus speed tests.
Alright.
So here we go.
So here I had to let Bailey do the slide before I can take her out to get her to do any kind of running, so I figured I would go ahead and take advantage of that and get a couple side-by-side comparisons, and here are a couple of shots for you. So while I was out shooting Bailey while she was running, I did not notice any kind of lag in the autofocus when I had the 2x extender connected to the 70-200, and the images actually turned out really well. I'm very shocked. at the performance of this lens with and without the 2x extender on it. Here's a couple of photos, side-by-side comparison, for you to take a look at. Hello! So we're back after out going and doing some photographing of Bailey at the park. And after the park, we went over to the fish cleaning table, which is a very high activity area. We had quite a few birds. We even had some fishermen there that were there posing for us. So I have a couple pictures of Some fishermen with their catch. Hey there, I hope you're enjoying this video because they're all produced by me and on a very small budget. So to help increase my budget, you could purchase items from the links below, maybe, where I have all the links to my affiliate products. Um, they give me a little bit of a kickback And sometimes they have a discount code attached to them so you can save money too. So come on over, hang out with me. Just give that subscribe button a good old smack and give me a thumbs up so YouTube will refer my videos out to other viewers so we can get more subscribers. And ring my bell. And you'll get notified the next time I post a video. So that's pretty much it. Hope you enjoy the rest of the video. Talk to you later. I just wanted to go over what exactly we did out in the field and kind of some features of this 70-200 new version of the Sony lens. One thing That they have is the new aperture ring, which is kind of handy, I guess, if you're videoing. But I don't do a lot of videoing with my 70-200, which that might change, um, just because it's quickly becoming one of my favorite lenses. On the side here, you have a little thing here called Iris Lock. I have that locked so I don't bump it out in the field, but if you click it off, you can then scroll through there. And if you can hear that, you hear the clicking? Well, you— there's a switch for that too. You can cut the clicking off, which is really nice. Right here, all the way here on the bottom. Hear it clicking off? And now it's nice and smooth for videoing. But I keep mine set at auto, and I keep the iris locked. But on the other side, we got stabilization mode, which I have it on. You have modes 1, 2, and 3. 1 is for your basic stabilization at low shutter speeds. 2 is for panning, so when you're going left to right, it's supposed to help stabilize. And 3 is for erratic movements, which sometimes I get that, especially when I'm out chasing birds. And then you also have Where you can click full focus range or you can go 3 meters to infinity. And then, oh, and this DMF is also something that's really handy if you do, I do landscape and I'll switch that on. Then you can switch over to manual focus and you'll get the, I have mine set at red, you'll get the red highlights. of the stuff that's in focus, which is pretty cool. And then you have these buttons here. All of them do the exact same thing, whatever you set it to in your camera. I don't actually have anything set to those, so I pretty much have whatever's default on there. And then of course you got your autofocus and your manual focus switch. It's a very nice lens, very light, very well balanced, and it's all internal zoom, so when you zoom there's no movement. And it's got a fairly short throw, so it's pretty easy to go from 70 to 200 without moving much of your fingers. And then when you go and throw this on there, your 2x extender, you get to go from 140 to 400mm, which makes it compatible— or not compatible, but comparable to the 100-400mm at f/5.6. Because once you put the 2x extender on this, since it's a f/2.8 lens, it turns it to a f/5.6 at the lowest focal point. And actually, I'm sorry, actually this would be throughout the entire focal point because it's a fixed f-stop lens. I really enjoy this lens for landscape. I always have, no matter I was Canon, Nikon, and now Sony. I have to have my 70-200 for landscapes. That's what I really, really enjoy. At the end of my video here, I'll have a few landscapes from the night and shot at the bird cleaning table— or bird cleaning table— the fish cleaning table. Sorry about that. I guess duck hunters could use it for cleaning their ducks too. I'm sure the pelicans won't mind. But anyways, so I mean, if I didn't already own the 100-400 lens, And I was debating on whether to get one lens. I think I would probably invest in the 70-200 with the 2x extender. I'd even get the 1.4x extender, which I have that, um, and it works well with that too. I just didn't throw any comparisons in on this video because the 1.4x works on just about every lens. But I would buy this package here, and that way you end up— you get, you get 2 lenses, whereas this one here you only get one. They're equally— I think they're equally as sharp. It's really, really hard to tell the difference between the 2 when I put the images side by side. You probably saw that earlier in the video. But anyways, there's gonna be some more videos at the end of this— not videos, some more pictures at the end of this video with the 70-200 with the 2x extender. And then there's also a few shots from the 100-400, but most of them are off of the 70-200 with the 2-time extender with Bailey and also at the fish cleaning table of the pelicans and whatever various birds were flying around and fishermen and boats. Anyhow, hope you enjoyed this video. Don't forget to like and subscribe below. There'll be more videos to come. I think my next video is going to be How to get out of auto in 10 minutes so you can shoot in manual versus automatic. You can do that in 10 minutes, and in my next video I'll show you how. Alright, thanks for watching. Have a great day. Here's images taken from the 100-400. This is Bailey. All the images in this segment are taken at aperture 5.6 and the shutter speed was 1/2000th of a second. On the birds, the ISO did vary because I wanted to keep the shutter and the f-stop the same throughout every image. And then here's my fisherman and his big catch. He was in the shade, so I had to change it all up. Alright, so here's the images taken with the 70-200 with the 2x teleconverter on it. I never had an issue with it trying to find focus with Bailey or any of the birds or the fishermen. The, um, it was really hard to pick the images for this video because every single image that I took was sharp. So So, uh, I definitely have to eat my words on the whole converter. I never liked them before. So here's a couple pictures that I took of a pelican. He was very close at the fish cleaning table, but the lens will actually focus at about 15, almost 16 inches at 70mm. And at 200mm at about 32¼ inches. Then when I got home, I did a little test on it to see how much it extends when you put the extender on it. And with the 2x extender on it, it only increases the focal distance by about an inch. So you're at about 17 inches at 70mm. And at about 33¼ inches at 20mm. Pretty impressive. Here's a few of my favorite shots from the night. A few sunsets, but the shot of the day is the last one with the dog on the bow of the boat right in the ray of the sunlight. Don't forget to like and subscribe.
