Sigma Teleconverters ???

Bigvin

Bigvin

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Wondering if anyone can help me with the different variants of the Sigma TC's. So far I've came across

Sigma 2x Tele converter APO EX DG AF
Sigma 2x Tele converter APO DG AF
Sigma 2x Tele converter APO EX

It'll be used on a Sigma 120-300.

Cheers
 
On Sigma's website, there's a list of what the initials all mean. IIRC, the APO refers to an aspherical element in the converter, the EX shows that it's one of their better products and the DG tells you it's suitable for FF and Dx bodies/lenses.

Of the 3 you've listed, I'm fairly sure you have them in the right order!
 
Just as something to think about , using a 2 times converter cuts down the light to the sensor considerably, my problem with that converter was I had to up the ISO considerably and slow down shutter speed in normal daylight. This then gave the normal problems of pixelation and confined to stationary subject. Even then only in bright sunlight (if you can remember what that was :lol:)

My guess is you are thinking of having a 600mm range without getting a 600mm lens, at least that was my thoughts originally and I found it wasn't that successfull.

So I opted for the Sigma 1.4 converter instead which still gave me 420mm max with the lens at 300mm.

Also be aware that TC's arn't compatable with all lenses and you need to check to see if the will fit.

Hope this may give food for thought

Bazza
 
Nod said:
On Sigma's website, there's a list of what the initials all mean. IIRC, the APO refers to an aspherical element in the converter, the EX shows that it's one of their better products and the DG tells you it's suitable for FF and Dx bodies/lenses.

Of the 3 you've listed, I'm fairly sure you have them in the right order!
Click to expand...

So the APO DG AF would be better than the APO EX?


realspeed said:
Just as something to think about , using a 2 times converter cuts down the light to the sensor considerably, my problem with that converter was I had to up the ISO considerably and slow down shutter speed in normal daylight. This then gave the normal problems of pixelation and confined to stationary subject. Even then only in bright sunlight (if you can remember what that was :lol:)

My guess is you are thinking of having a 600mm range without getting a 600mm lens, at least that was my thoughts originally and I found it wasn't that successfull.

So I opted for the Sigma 1.4 converter instead which still gave me 420mm max with the lens at 300mm.

Also be aware that TC's arn't compatable with all lenses and you need to check to see if the will fit.

Hope this may give food for thought

Bazza
Click to expand...


Yeah the 600mm was the idea, but realistically it'll just be kept in the bag for the odd occasion and I'll be using the 1.4x most of the time.


Cheers for the replies.
 
I use a Sigma 2X EX on my 120-300, this is a crop from a shot withthat setup.

IMG_7117.jpg
 
Cracking pic Ken, I'd be happy with that.

So that was shot with the EX, not the EX DG?

Do you have the original uncropped version so I can see what kind of crop is available?

Cheers Lee
 
The DG refers to some new coatings that Sigma introduced (or possibly the same coatings but decided to give them a new name).

I seem to recall that people who compared DG and non DG glass couldn't determine any difference.

I've got a Canon fit x2 Sigma converter for sale (in classifieds)
 
andrewc said:
The DG refers to some new coatings that Sigma introduced (or possibly the same coatings but decided to give them a new name).

I seem to recall that people who compared DG and non DG glass couldn't determine any difference.

I've got a Canon fit x2 Sigma converter for sale (in classifieds)
Click to expand...

DG stands for digital- or 'made for digital'

EX was their matt finish given to the top lenses.
 
Bigvin said:
So the APO DG AF would be better than the APO EX?
Click to expand...

Going purely by the letters you give, I'm not sure the APO EX is an AF converter, so for use between an AF body and an AF lens, yes.
 
Nod said:
Going purely by the letters you give, I'm not sure the APO EX is an AF converter, so for use between an AF body and an AF lens, yes.
Click to expand...

Cheers Nod.

Why does it have to be so complicated. :bang:
 
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