Blurryeyed Loc: NC Mountains.

Probably your best bet is the 18-135, I am not so much of a fan of the 24-105 and on your camera it is not really a wide angle anyway. The 15-85 which I had almost forgotten about is an excellent lens, probably the best you can do in your price range.

imagemeister Loc: mid east Florida

Where??

Selene03

I would say the Canon 10-18 mm lens is your best bet for that camera for a wide angle. Another good choice is the older 10-22 mm canon lens, but it is a bit heavier and more expensive and doesn't have IS. The 10-18 will allow you to get the wide angle shots you want and it pairs nicely with your camera.

dwmoar Loc: Oregon, Willamette Valley

If it has a APS-C sensor it isn't a full frame.

The Canon 800D is built around a 24.2-megapixel APS-C CMOS sensor

DrJ

I evaluated several options for my Canon 7D back in 2014. I selected the Tamron 17-50 f2.8--the non VR version. My specimen is very sharp and has served me well. It is wide enough for my purposes. The price has decreased in recent years making it a bargain. As with any lens, it is good to evaluate the actual specimen you are buying. Good luck, DrJ

amfoto1 Loc: San Jose, Calif. USA

I agree with some of the previous responses... based on what you want from a lens, a 24-105mm is not a good choice for you.

On a Canon 800D (which is called a Rebel T7i here in N. America)... a "crop sensor" camera... 24mm is simply not very wide. It's only very slightly wide angle.

If you want a wide angle, your best bet would be AT least 20mm (mildly wide), 18mm (moderately wide) or even wider such as 10mm or 11mm (ultrawide).

Didn't you get a lens with the camera? 800D/T7i are typically fitted with either an EF-S 18-55mm (moderately wide to short telephoto) or an EF-S 18-135mm (moderately wide to moderate telephoto).

If you have one of those lenses and want still wider, there's an affordable option in the Canon EF-S 10-18mm IS STM... which sells new for around $270 right now. An alternative (better built, larger aperture) is the Canon EF-S 10-22mm USM (around $600 new, might be able to find used for around $400). Both of these lenses are optically excellent and capable. The 10-18mm is somewhat plasticky, similar to the cheaper "kit" lens in build quality. But it's one of the least expensive, lightest weight and smallest of the ultrawide (UWA) zooms. It's also the first to have image stabilization (Tamron and Nikon have since introduced UWA lenses with stabilization, too).

CORRECTION: I just noticed that Canon currently has a HUGE discount on the EF-S 10-22mm USM lens.... it's now selling for $399! That's a great deal! I've never seen that lens offered new for less than $600!

If you don't mind manual focus, there is the Rokinon/Samyang 14mm f/2.8 prime lens, too... which is reasonably affordable. It's also a manual aperture lens, though. So it will often be slower to shoot with and when it's stopped down your viewfinder will dim down too, making manual focusing more difficult. This lens sells under various brand names (also relabeled Bower, Vivitar and others). In the Canon mount, there's a "chipped" version that costs a little more, but I recommend because it allows your camera's Focus Confirmation feature to work, which can be helpful when trying to do manual focus.

There are numerous other ultrawides... most of which are zooms. They include:

Tokina AT-X 11-16mm f/2.8.... $399... has the largest available lens aperture among the UWA. This is an older design still avail. new, but that was superseded a couple years ago by an improved Tokina AT-X 11-20mm f/2.8. The older lens is VERY sharp, but it's also got a very narrow range of focal lengths AND it's highly susceptible to flare (the two Canon lenses are among the most resistant to flare).

Sigma 10-20mm f/3.5... $399... used to be one of the most expensive, but the price has been greatly reduced. This is a decent lens, but also one of the largest and heaviest of the UWA.

Tokina AT-X 12-28mm f/4.... $379... with a one stop slower aperture and broader, but less extreme range of focal lengths, this is a newer lens than the above 11-16mm. (The 12-28mm superseded an earlier 12-24mm f/4 that's no longer available new.) All these Tokina AT-X Pro lenses are quite nicely built. One thing though, is that they use an unusual "focus clutch" mechanism to shift from auto to manual focus. The entire focus ring slides slightly forward or backward to engage or disengage auto focus. This works fine, but means the Tokina lenses don't have "full time manual focus override", the way the Sigma HSM, Canon STM and Canon USM lenses do.

Rokinon/Samyang 16mm f/2... $349... is another manual focus, manual aperture lens... with the largest aperture available on an affordable ultrawide. f/2 is a full stop faster than f/2.8... two stops faster than f/4. This is a fairly new lens... I don't know much about it.

How large an aperture do you need? Well, it depends upon what you plan to shoot. Someone doing night photography might want as fast a lens as possible, in order to have brighter viewfinder. But for most other purposes (scenic shots, architecture, yada, yada), we stop our wide angle lenses down to middle apertures anyway, to make for greater depth of field.

There are other ultrawides... but they will be over your budget, unless you shop used and find a good deal on one.

But, maybe you just want a "wide"... not an "ultrawide". In that case, the inexpensive option is the EF-S 18-55mm and the more expensive is the EF-S 18-135mm. In either case, be sure to get at least the "STM" version. There are older, non-STM versions of them too, which should sell for less... but use a slower/noisier micro motor auto focus drive and lack some optical improvements. Those micro motor lenses also require you turn off the AF at the switch before manually focusing them (failing to do so will damage the AF mechanism). For those reasons, I recommend the at least the STM versions. There also is an even better "USM" version of the 18-135mm... but it will typically sell for more than you want to spend. It's optically identical to the STM version... just has higher performance auto focus (it uses Canon's latest "Nano USM", in fact). Between the 18-55mm and 18-135mm options, the latter are better built, and obviously would be more versatile.

Canon also has for some time offered EF-S 17-55mm f/2.8 IS USM and EF-S 15-85mm IS USM lenses, both of which are excellent. These sell new for considerably more than you want to spend... but if you find a good, used one for within your budget, jump on it!

All the Canon lenses mentioned do not come with their matched lens hoods... those are sold separately. If it's not included with a used lens, I highly recommend getting the appropriate hood for any lens you purchase, which will both make for better images and help protect the lens from bumps while in use. The matched lens Canon hoods typically cost about $25. There are third party "clones" which are less expensive, but may or may not be as well made or fit as securely on the lens.

mwsilvers Loc: Central New Jersey

I have the 15-85 and agree, but I would caution against its predecessor the 17-85mm which had a well know ribbon issue that was a pain to fix, and was not as good a lens as the 15-85. Or did you mean the 17-55 f/2.8?

dragonlady9947

Check out camerastuffreview.com for an article on the 800D. Lists best lenses for your camera. The It has anAPS-C sensor

Amadeus Loc: New York

I have an 80D and recently purchased the Canon 18-135 USM on eBay for $289. It is in what is called a "white box". But it is comes with the US warranty and costs much less than the marked box version. They come from camera kits that are broken up and sold separately. It is an excellent all around lens.

xposure

I agree with the 18-70mm. In a crop sensor it is the equivalent of a 28-112mm in a full frame

revhen Loc: By the beautiful Hudson

The 800D has an APS-C cropped sensor. The 18-135mm lens will give you a reasonable wide angle at the lower end equivalent to a 28.8mm on a full frame Canon and will also have a "reach" equivalent to a 216mm on a full frame sensor. I use it all the time with excellent results on my 70D and 80D Canon body. The 10-18mm will be equivalent to a 16-28.8 on a full frame. It's also an excellent lens. At a modest risk, check out the sale used the used lenses on eBay.

Blurryeyed Loc: NC Mountains.

I would buy this lens in a heartbeat... Great lens, close to an L lens in build quality and an excellent price, if I remember when I bought mine it was close to $800 with the hood.

https://www.ebay.com/itm/Canon-EF-S-15-85mm-f-3-5-5-6-IS-USM-Lens/153431170916?epid=99734050&hash=item23b935df64:g:VwoAAOSwC8ZcnCyK

mwsilvers Loc: Central New Jersey

That is certainly a great price if its in good shape. Some of the text in the description is a bit dicey though.

Blurryeyed Loc: NC Mountains.

Seller has 100% feedback and if it is not ebay will force the return. I had a problem with a Japanese seller on a vintage lens and ebay forced the refund.

mwsilvers Loc: Central New Jersey

I've got lots of lenses but the two I use the most are the EF-s 15-85mm and the EF 35mm f/2 IS USM.