Opteka 6.5mm f/3.5 Professional Ultra Wide Angle Aspherical Fisheye Lens for Canon EF-Mount EOS 90D, 80D, 77D, 70D, 60D, 50D, 7D, Rebel T8i, T7i, T7s, T6s, T6i, T6, T5i, T5, T4i, T3i, T3, T2i and SL3

This is the perfect way to try out a wide-angle/fisheye lens at a cheap price. It is cheaper than any other wide-angle or fisheye out there.Whoever buys this should be aware that this is a pretty primitive lens; by that I mean that the fstop mechanically controlled by a ring on the lens (So apperture priority will not work because your camera will not know what f-stop the lens is at) and there is no autofocus or stabilization.This is NOT a bad thing though. It is easy to use the lens. Simply put your camera on the mode labeled P, (if you have canon, that is. I'm not sure if that is different for nikon or sony) and it will work just like apperture priority – the shutterspeed will be chosen automatically.When it comes to the focus – most of the time everything is in focus because the view is so wide, though things can be blurry sometimes, and it is easy to forget to focuse because everything looks clear when you look through the tiny viewfinder. The lens has a guide on the focus ring based on the focus distance in feet from the front of the lens. Just guesstimate it and it will be fine. Especially if you shoot on f8 to lower your depth of field. This isn't really the type of lens to do shallow depth of field tricks on so I would suggest have the f number be as high your lighting will permit (as small of an apperture as possible).Pros– Build quality: the thing is completely metal. Rare is it you find a lens so cheap with a metal mount.– Price: Fantastic if you wanna try wide-angle/fisheye and you don't know if your ready to invest a lot in it.– Shoots great.Cons– Heavy: It's all metal. I don't mind it, and it doesn't really have much effect on my tripods, but some might care about that.– Lens Hood and Cap: They are really thin junky plastic. With the abnormal lens shape, you cannot use a standard cap, so the one that comes with it is basically all you got and if you break it your screwed. The cap clips onto the hood and not very well. If the hood cracked off or something, your lens cap can't go on anymore. And the hood attachment is abnormal too so you can't replace that either.– Primitive: I explained above. It is only a minor issue.– Prime: this doesn't bother me either but it is a prime lens. Meaning it is wide and only wide.I know I listed more Cons than Pros, but the cons were really nitpicky. The only thing I personally have a real problem with is the lens hood and cap. The Heavy weight is just a result of good build quality and the primitivity and prime-ness are a result of keeping the price low.It really is a rockin awesome lens and I recommend it to anyone who wants to try some fisheye shots. It's not the best fisheye out there but it is freakin good and cheaper then most lenses in general.

For such a cheap lens, it really doesn't feel like it. I was very surprised at the metal construction which, honestly, feels more solid than some mid-priced Nikon lenses. Focus is smooth and the aperture dial clicks positively into position. It takes a little force to turn the ring, but I'm okay with this considering there is no way to lock it in place.For a cheap rebranded korean lens, image quality is quite nice. As of late, Korean manufacturing has made leaps and bounds when it comes to low cost quality. I'd put it on par with the kit lens (18-55mm) options from Nikon and Canon as far as image quality goes. Nothing to write home about, but plenty adequate for $150. Just what I had expected in this regard.Now, there are a few restrictions to be aware of before buying this. This lens has no mechanical or electrical hookups between it and your camera. I'm not too familiar with Canon, but on low end Nikon cameras (D3xxx, D5xxx, D90 and below) this means that you will be stuck in manual exposure mode and not have any metering. Not the end of the world, as you can either use live view or a smartphone app. It's also not too terribly difficult to guess exposures in most situations once you're used to it. On higher end cameras though (D7xxx/D300 and above, all full frame cameras*) you can set the values of this lens in one of the Non-CPU Lens Data banks and have full metering. Shutter priority and Program mode won't work without the mechanical aperture link, but manual (with metering) and aperture priority will work fine. Lastly, this is of course a manual focus lens, but the depth of field is so massive that you can almost get away with leaving the lens set to F8 while focused at infinity and never have to worry about focusing.*This is not a full frame lens, so if used on full frame cameras you will have a circular fisheye. Google this to see what that means.Overall, its a great lens for the price. If you can handle the restrictions I mentioned, it is an excellent alternative to name brand fisheye lenses by giving you 80% of the lens for 25% of the price.

Rempli bien son job mais j'ai pas un bon focus (voire aucun) en pleine ouverture. J'ai l'impression que la course de la bague du focus s'arrête trop tôt. Mais le côté artistique est la.

I took a chance on this as I don't do normal when it comes to photography and I wanted to see if I could get a fisheye lens for the Canon 90D that went beyond Canon's own 8mm. It was inexpensive so I took a chance on this.On memory I believe another review here mentioned that part of the lens broke after a short period of usage. I also had an issue where the rear silver plate (the part which slots into the camera) fell off after a few test sessions. However this was resolved simply by re-affixing with super glue and since then there have been no other issues and it's worked a dream. This lens offers close to 180 degree photos. From experience to date I have noticed a reduction in quality when using in slightly darker indoor spaces but external shots have been excellent. Initial issue aside I am extremely happy with this lens and it has been used on many occasions. Very happy with this especially at the cost and since the repair it's been used on countless occasions.As others note it's a manual focus but it really is incredibly easy to use - you would hardly know the difference. In my book a bargain!

Por el precio esperaba una mejor calidad, no es barato y no tiene muy buena calidad, preferiría haber gastado dos mil pesos más y comprar uno mejor.

The lens is scratched on the sides like the colour is faded.i thought it would be brand new!

A certi prezzi, per chi ha un minimo di conoscenze fotografiche, non ci si può aspettare grandi cose. La nitidezza non è certo il punto forte di questo obiettivo, ma per chi vuole sperimentare e soprattutto divertirsi con qualcosa di diverso è sicuramente un buon prodotto. In postproduzione si recupera qualcosa. Consigliato ai più creativi che vogliono divertirsi