Is 3.5 instead of 4 worth +50% in price?

I'm talking about the sigma 10-20mm - I am hesitating to change my 4-5.6 for a constant 3.5.

The shop is offering 350 dollars for my lens, asking 1000 dollars for the constant 3.5.

is it worth it?

Are these US dollars? If so, the 3.5 can be had for much cheaper than that!

Up to you as to whether the faster lens is worth more Not a big difference at the wide end (3.5 vs 4), but more so at the longer end (3.5 vs 5.6). Do you need a faster lens at the longer end of the zoom range?

Seems a very expensive way to gain about half a stop,particularly with high ISO and noise handling capabilties of the 7D

Nope. I've considered making this move and my answer was nope.

Thanks for your answers.

Yes, these are US dollars, and yes, this is the kind of price we have to deal with in Europe. Guess crossing the ocean makes merchandise more valuable.

You have re-stated what my reason was trying to tell me. The buy-the-lens demon has been (for once) defeated.

I hardly move the zoom, 99% of the pictures are taken at the 10mm end... there really is no justification, is there

thanks again

Id worry more about replacing that EF-S kit lens first, the 7D is a little spoilt by that lens.

nah, got it without the kit... i've stuck my 30mm 1.4 on it, hasn't left it since

what lens would you get in the long end?

You should compare the 3.5 vs 5.6 since this is a constant aperture especially at the longer end of the lens. I don't think it's fair to compare it as 3.5 vs 4, that is just the lower end. Personally, I will surely get the 3.5 constant lens as opposed to the variable aperture lens.

Mufutau

ecce_lex wrote in post #9370769
I'm talking about the sigma 10-20mm - I am hesitating to change my 4-5.6 for a constant 3.5.

The shop is offering 350 dollars for my lens, asking 1000 dollars for the constant 3.5.

is it worth it?

In theory - sure. The question was whether for someone using the 10mm end the difference was worth it... 3.5 and 5.6 IS a big difference, I know

If you are considering spending 1000 dollars on the sigma, get the 11-16 instead. I truly believe that the 10-22 and the 11-16 are the only two lenses worth considering whenit comes to crop uwa.

Spending USD 1k is what I'm trying to *avoid*

I have not had the opportunity to play with the Tokina (or Tamrons for that matter). Strictly aestethically speaking, the Sigma seems more robust, as if the plastic would be better quality... the glass however I've heard it's really nice.

the 3.5 however would give me and edge when using the polarizer...

The reviews I have seen show there is NO improvement in optics, just aperture. So if you think 1/3 stop at 10mm will benefit you tremendously, then go for it. Personally, I think it is a waste of money, but that's me.

ecce_lex wrote in post #9370769
I'm talking about the sigma 10-20mm - I am hesitating to change my 4-5.6 for a constant 3.5.

The shop is offering 350 dollars for my lens, asking 1000 dollars for the constant 3.5.

is it worth it?

@ 20mm, f/3/5-5.6 is more than ONE stop faster. THAT is a big deal for me. Unfortunately, I still have the original

So it's not 3.5 vs 4, it's 3.5 vs 5.6. BIG difference.

egordon99 wrote in post #9371403
@ 20mm, f/3/5-5.6 is more than ONE stop faster. THAT is a big deal for me. Unfortunately, I still have the original

So it's not 3.5 vs 4, it's 3.5 vs 5.6. BIG difference.

IF you shoot at 20mm a lot, yes (and really, why would you buy a 10-20 to shoot at 20mm 3.5, the $100 kit lens can do that).

Besides, the OP said he shoots in at 10mm almost exclusively.

tkbslc wrote in post #9371411
IF you shoot at 20mm a lot, yes (and really, why would you buy a 10-20 to shoot at 20mm 3.5, the $100 kit lens can do that).

Besides, the OP said he shoots in at 10mm almost exclusively.

Yeah, I read the responses AFTER I wrote my post

As for shooting at 20mm, I use my 10-20 when I need wider than my 24-70L. It kind of sucks going from f/2.8 to f/5.6, BUT it is NICE being able to go down to 10mm (so no kit lens for me :lol

Maybe I need the Tokina 11-16mm and live with the 8mm gap