Right I need some options

I have:

Canon EF 28-135mm IS F3.5-5.6 (~£200)
Sigma 70-200mm F2.8
Sigma 1.4x Tele Converter (~£120)
+
£1000

Im almost certainly going to sell the 1.4x converter. I might sell the canon lens if i can get some better options.
I want to get some decent zoom (up to 500mm ideally).
I also fancy a wide angle but want to have the whole range covered.

Suggestions please.

Sigma 50-500mm nicknamed the bigma

I dont think i want the bigma lol if have to lug around a very heavy massive lens to do mid range work and that would be less than ideal

Ok so i mocked this up



Which tamron is better value? Is there something else i should consider?

ditch the 28-135

get a 17-50 - tis pretty much perfect for a crop sensor

you can leave the really wide one and really long one for later

edit - if youre really into buildings then perhaps do get the wide angle zoom, if youre really into birds then perhaps the really long one but otherwise get a decent walkabout lens

that depends what you like to photograph and where youre walking about.

I keep my 80-320 on the camera most of the time and switch to a 16-45 if I need wide angle, so I guess you could call my 80-320 my "walkabout" lens.

Recieved wisdom is that a "standard" short zoom on a crop sensor DSLR is approximately 18-55 (hence thats what 90% of the kit lenses are), since this gives the angle of view of a 28-80 on full frame, ie moderate wide angle to short telephoto.

I favour my 16-45 because 1) its a better lens IQ wise than Pentaxs MK1 18-55 (which was the kit lens with my K10D), and 2) the extra 2mm at the wide end makes a big difference to what you can squeeze in and the perspective effects you can achieve. On the occasions when I need to plug the gap between 45 and 80, I have a 50mm f/1.4 prime permanently in my bag, but generally that isnt a problem to me.

My Dad on the other hand doesnt like wide angle so his standard zoom of choice is a Sigma 24-60 f/2.8. This gives him a little overlap between his standard lens and the 50-300 he uses for long telephoto work and the constant f/2.8 comes in handy in dim lighting.

I also know a guy who uses a 12-24, 24-90, 70-300 three lens kit, although most people I know whove tried this setup say it results in a lot of lens switching between the 12-24 and 24-90.

the Tammy 17-50 should be a very fine standard zoom, the 28-75 it replaced had a near cult following.

Ive heard of occasional front/back focussing issues with this lens in Pentax mount, I dont know if that translates to the other mounts but its worth watching out for.

Think i could get all 3:

Tamron AF 10-24mm f/3.5-4.5 SP Di II LD (IF) Lens for Canon

Tamron SP AF 17-50mm F/2.8 XR Di-II VC LD Aspherical (IF) Canon Mount

I have both those lenses, in fact just got back from Prague with hand luggage only and they were the only two lenses I took with me!