Replace my 10-18 with what

I love my 70-200, what would be the best lens to go with it, my budget is about £300 plus what i can get PX for the 10-18 thank you friends....Ray

10-18 is a great little lens. An EF-s 18-135 would be a nice compliment to your kit. Lightweight, nice and sharp.

What's the motivation to swap out the 10-18?

What problems are you trying to solve by replacing the 10-18mm lens? Focal length? Sharpness? Speed?

The 10-18mm is an ultra-wide zoom even with the 1.6x crop factor. Its EFL is 16-29mm which leaves a pretty good gap before you get to the 112mm minimum EFL of your 70-200mm lens.

Canon's 10-22mm gives you a touch more reach at the long end and is a little sharper and faster.

The 18-135mm is a good choice but you'll get a lot of overlap with your 70-200mm.

The 17-55mm f/2.8 is Canon's sharpest EF-S lens and will slot right in under your 70-200. Sigma makes one of these as well.

If you want a step up in quality, you might consider a full-frame ultrawide 'L' lens like a 17-40mm (EFL: 27-64mm) or a 16-35mm (EFL: 26-56mm)

drsilver wrote in post #19352347
What problems are you trying to solve by replacing the 10-18mm lens? Focal length? Sharpness? Speed?

The 10-18mm is an ultra-wide zoom even with the 1.6x crop factor. Its EFL is 16-29mm which leaves a pretty good gap before you get to the 112mm minimum EFL of your 70-200mm lens.

Canon's 10-22mm gives you a touch more reach at the long end and is a little sharper and faster.

The 18-135mm is a good choice but you'll get a lot of overlap with your 70-200mm.

The 17-55mm f/2.8 is Canon's sharpest EF-S lens and will slot right in under your 70-200. Sigma makes one of these as well.

If you want a step up in quality, you might consider a full-frame ultrawide 'L' lens like a 17-40mm (EFL: 27-64mm) or a 16-35mm (EFL: 26-56mm)

What about the 24-105 would this compliment be ok for me

happyduck wrote in post #19352359
What about the 24-105 would this compliment be ok for me

That's a fine lens. I have one that's a daily driver on a full-frame body. With a crop body, though, you get an effective focal length of 38-168mm so you're forfeiting pretty much all the wide-angle capability. Wide angle is the nemesis of APS-C sensors.

I assume you are willing to give up the 10mm ultra-wide coverage. I would suggest one of the 18-55 lenses (very cheap, and keep the 10-18) or the 15-85 (probably exceeds your budget.)

After getting a PM from one of the members, ive decided to stay as i am i thank you all for your replys thank you...Ray

Good call
You can very cheaply add an 18 - 55 to cover the " middle ground " the latest version is actually very sharp as well