Sigma lens VS Canon - DPChallenge Forums

Canon RF 24-70mm f/2.8 L IS

04/28/2005 07:52:47 PM · #1

I have been looking at threads where people post photos of the sigma 24-70mm F2.8 and the photos seem really sharp and some post photo of the Canon 24-70mm F2.8L lens and have some concern on the sharpness of the lens so my question is. Is it really worth going for the Canon and all that much money when a cheaper lens seems to be as good or better than the canon.. I am posting this inspite of the things i read in threads.. Just tell me what are the advantages and disadvantages of each one and if it really is worth spending so much money?

kirbic

Canon EOS R5

04/28/2005 07:58:10 PM · #2

Both are fine lenses. Speaking of typical copies, the Canon is likely sharper at f/2.8, according to the reviews/tests I've seen (I have no direct experience witht he Sigma). The build quality is another consideration, the Canon is built like a tank. Not to slight the Sigma, but the Canon is in a different class there. The Canon USM will provide faster AF, no doubt. There will be higher resale value, and no spectre of rechipping for a new body, as is possible with the Sigma.
The question really boils down to your uses for the lens and your expectations for performance. Take a trip to local camera stores, try out both lenses, then you will have first-hand information. I rented the Canon prior to buying it, so I knew what I was getting.

jmsetzler

Sony Alpha a6000

Sony 16-50mm f/3.5-5.6 E-mount

04/28/2005 07:58:38 PM · #3

After you judge the two lenses based on similar criteria, you will see the differences.

Sony Sonnar T* FE 55mm f1.8 ZA

04/28/2005 08:01:55 PM · #4

The problem of going to a store and try them out, here in portugal that is almost impossible since it is really difficult to find photographic material of that type... only if you ask them to import it and i would have to buy it they would not import lenses just for some one to try them.. And there is no place where i can rent them...

But are these diferences really worth that much money?

ramevi

Sony Alpha a7 II

04/28/2005 08:02:02 PM · #5

Well, I have the 28-70 2.8 EX an it's great lens for only 320 usd:

And I also have the cheapest L glass ever 70-200mm f4L, and also it's great lens for 440 usd that I paid for:

The only issue could be the compatibility warranty you have with canon over canon, but at last, your budget has the last word. At last, a master is a master no matter the gadgets (I'm not a good example, I'm still learning).

Message edited by author 2005-04-28 20:03:50.

Sony Sonnar T* FE 55mm f1.8 ZA

04/28/2005 08:13:58 PM · #6

The two lens that i have in my wish list is the Canon 24-70mm F2.8L lens and the Canon 70200mm F2.8L USM IS but i would really have to wait sometime to get my hands on this... So i was guessing alternatives for the 24-70mm but if i buy the Sigma i will not buy the Canon 24-70 so would you really wait for the money for the canon lens? i really don't need those lens at the time but i would like to take a step higher and just leave some of the lens that just give a hard time...

I have been really trying to understand the lens i have and tryed lots of ways to make them work better but sometimes it's just impossible... any thoughts?

ramevi

Sony Alpha a7 II

04/28/2005 08:19:31 PM · #7

Originally posted by Discraft:

I have been really trying to understand the lens i have and tryed lots of ways to make them work better but sometimes it's just impossible... any thoughts?

Wich lens are you talking about or do you have?, I just looked at your profile and can't say you have problems to make them work better...

Message edited by author 2005-04-28 20:20:02.

Sony Sonnar T* FE 55mm f1.8 ZA

04/28/2005 08:22:31 PM · #8

Originally posted by ramevi:

Originally posted by Discraft:
I have been really trying to understand the lens i have and tryed lots of ways to make them work better but sometimes it's just impossible... any thoughts?

Wich lens are you talking about or do you have?, I just looked at your profile and can't say you have problems to make them work better...

The lens that is giving me the hardest time is the cannon 90-300mm but the other day i understood that the problem of not getting sharp shots was because of the software i was using at least it helped a lot..
For example the Sigma 15mm fisheye seemed more sharper when i bought it than it is now...
The 18-55mm seem to come soft sometimes i know i have no arsenal but i would think these lenses would make a better thing that they seem to do..

ramevi

Sony Alpha a7 II

04/28/2005 08:27:10 PM · #9

Originally posted by Discraft:

Originally posted by ramevi:

Originally posted by Discraft:
I have been really trying to understand the lens i have and tryed lots of ways to make them work better but sometimes it's just impossible... any thoughts?

Wich lens are you talking about or do you have?, I just looked at your profile and can't say you have problems to make them work better...

The lens that is giving me the hardest time is the cannon 90-300mm but the other day i understood that the problem of not getting sharp shots was because of the software i was using at least it helped a lot..
For example the Sigma 15mm fisheye seemed more sharper when i bought it than it is now...
The 18-55mm seem to come soft sometimes i know i have no arsenal but i would think these lenses would make a better thing that they seem to do..

Well, As far as I have learned, smaller aperture (f5.6 to f16), equals sharper image, but you have to be careful with the shutter speed, especially with zooms, or you could get a blurry image, the longer the focal lenght, the faster the speed you will need.

Message edited by author 2005-04-28 20:27:41.