Sigma APO 150-500mm F5-6.3 DG OS HSM - Bigmos

AngryCorgi wrote in post #5702006
Rob,

Could you show a 500mm/6.3 and a 500mm/8 crop (ten pound note shots), one after another, both from the sigma? The sigma 120-400 benefits tremendously from just a 1/3 stop aperture shrinkage, and I am curious if it's big brother behaves similarly.

Thanks!

This was basically what I was looking for as well.

I'm assuming GyRob still has the lens...does he?

Most of the softness wide-open that the money samples show look very similar to the "soft glow" effect of the 120-400. My tammy 70-200/2.8 does this to a lesser degree at f/2.8 and then gets almost perfect at f/3.2. With a 1.4x TC, that same 1/3 bump from f/4 to f/4.5 is night and day! I don't know why this is so much the case, but it seems to be popping up with a lot of zooms I've seen lately. A good example of how effective this bump is: my tammy was shown almost identically equal in IQ and color to a canon 70-200 2.8L IS sample at 200mm-f/2.8, and then better than the Canon with both at f/3.2. This is something that I think is worth investigating.

AngryCorgi wrote in post #5702011
I'm assuming GyRob still has the lens...does he?

Yes I believe so. I think he said it was a keeper as a light 500mm to use when dragging out the 500L wasn't warranted.

In2Photos wrote in post #5701696
WOW! That difference is staggering and disappointing. I knew the Sig wouldn't really "compete" with these lenses, but I thought it would at least try. I wonder what the 100-400 looks like in comparison.

Yes, this comparison would interest many on this forum.

give me a few mins then
Rob.

GyRob wrote in post #5702078
give me a few mins then
Rob.

YEAH!

had to drop to 1/400 resting on beam OS on F8 - by the way all NOTE shots are at ISO 400 ( cloudy here )
SO there is room for more detail at a lower iso rateing. lower shot f6.3
Rob.

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GyRob wrote in post #5702128
had to drop to 1/400 resting on beam OS on F8 - by the way all NOTE shots are at ISO 400 ( cloudy here )
SO there is room for more detail at a lower iso rateing. lower shot f6.3
Rob.

It certainly cleans up a good bit. Thanks for doing that Rob.

In2Photos wrote in post #5702151
It certainly cleans up a good bit. Thanks for doing that Rob.

no probs and yes it does clean up nice at f8 to be honest better than i thought .
Rob.

Yes, the increased contrast performance is very noticeable. Thanks for the extra effort!

I'm digging this lens so much I'm probably going to be selling the 100-300 f/4 when I get back from Malaysia. It has performed better than I had hoped.

GyRob wrote in post #5701699
and this is the sigma at 500mm at its closes focusing aprox 6ft away.
Rob.

Rob, this shot looks OOF. How about using your 40D in live view, 10x zoom, and MF from the same distance (or slightly further away, to be safe). I bet you'll get a sharper capture.

Tony-S wrote in post #5702240
I'm digging this lens so much I'm probably going to be selling the 100-300 f/4 when I get back from Malaysia. It has performed better than I had hoped.

Wow. That's saying a lot, Tony.

You love that 1-3 EX...

In2Photos wrote in post #5701846
I understand that. So why is it that the 100-400 can be on par with the 400 5.6 (sure it is more expensive)? Maybe not all copies but some. How do you think the Bigma compares? Many reports say that it is also on par with the 100-400 and 400 5.6 and it is a 10x zoom, not a 3.33x. I didn't expect prime like IQ but I also didn't expect consumer grade IQ either. I was expecting something in between but leaning towards the prime side, not the consumer zoom side.

I am sure someone will complain I am saying this again.
I sold my Bigma for the 100-400 and my Bigma was sharper then the 100-400 I have now. I was hoping to get this 100-400 and be like wow thats great but it seems lackluster to me. the only benefit I got was the IS.

LightRules wrote in post #5702261
Rob, this shot looks OOF. How about using your 40D in live view, 10x zoom, and MF from the same distance (or slightly further away, to be safe). I bet you'll get a sharper capture.

im sure your right, on that one it was totally hand held on 1shot so oof by me moving could easyly have happend so i think all should ignor that closeup shot
Rob