ART Super in depth review of the Sigma 120-300 2.8 /w Sigma 2x Teleconverter

CornUponCob

Active Member
Oct 3, 2001
15,299
I wouldn't really recommend it except for perfectly still subjects. Stick with the 1.4 and just crop.

If it's a 300 2.8 prime, go ahead and use a 2x.

Now you know.
 
TS
TS
CornUponCob

CornUponCob

Active Member
Oct 3, 2001
15,299
The sigma 120-300 is really more like a 280mm 3.1 at the long end, so you end up with like a 560 5.8 or something.

The camera reports 600 5.6, but it's not quite that. you still have AF, but unless the subject is in direct sunlight, it's nearly useless. Series of running shots were 9/10 OUT of focus in the shade, and about 7 out of 10 IN focus when in the sun on a D700.
 

s14brent

Active Member
Apr 29, 2009
2,001
las vegas
turbodude has this lens and says the 1.4x doesnt really affect the IQ iirc.

I have the sigma 300 f/2.8 but my kenko 1.4x doesn't work with it. hrm. fucking useless.
 

MSIGuy

om nom nom nom!
May 30, 2005
4,705
What about the AF? I've been seriously considering this lens for baseball on a 1D2, but I've heard the AF blows. Your thoughts?
 
TS
TS
CornUponCob

CornUponCob

Active Member
Oct 3, 2001
15,299
What about the AF? I've been seriously considering this lens for baseball on a 1D2, but I've heard the AF blows. Your thoughts?

The AF without a teleconverter is about 85 - 90% as good as the 300 2.8. It does better tracking objects coming towards you than objects moving away.

Some people complain about the AF while zooming. . . I haven't really had any issues. The lens does have to do a lot of autofocusing while zooming but hey. . . at least the lens zooms.

Buy this lens if you need a lens that zooms from 120-300 (my big money maker is swimming and the range is perfect for swimming. I'm constantly zooming throughout the range. I'd shoot swimming with a 70-200 and a 300 and missing the 200 - 300 range was annoying and I'd miss shots switching bodies). If you just need reach just get a regular 300 2.8.
 

turbodude

Just a photographer
OT Supporter
Jun 17, 2002
10,037
Las Vegas
120-300 is bauce if you need the flexibility, especially VIDEO...

with the 1.s sigma tc, i see no loss in IQ... however my 400 3.5 AIS is razor sharp, so it is my go to if i need the range, and literally i feel is the exact same with a 1.4x tc on. But the 400 is also known as one of the sharpest telephoto lenses ever made. so yeah.
 

Users who are viewing this thread

About Us

  • Please do not post anything that violates any Local, State, Federal or International Laws. Your privacy is protected. You have the right to be forgotten. Site funded by advertising, link monetization and member support.
OT v15.8.1 Copyright © 2000-2022 Offtopic.com
Served by fu.offtopic.com

Online statistics

Members online
161
Guests online
40
Total visitors
201

Forum statistics

Threads
369,480
Messages
16,886,928
Members
86,873
Latest member
vitalesan