Resolution chart shots Sigma 80-400OS and Tamron 90mm Macro

[J.A.F. Doorhof]

I made some resolution chart shots just now with the new Sigma 80-400OS for comparison I added 2 from the Tamron 90mm Macro which is according to most one of the best lenses arround.

All shots were made on a not so very stable tripod (but good enough), mirrorlockup and timer of 2 seconds.

ONE PROBLEM, I shot with tungsten light and a little underexposed, I feel rather sick but I promised to made the shots so I did, my exuse however I think the shots will speak for themself, they are all posted in RAW for good comparison.

80mm f5.6 can be found here : www.isfcalibraties.nl/uploads/foto/OS80-56.CRW
80mm f8 can be found here : www.isfcalibraties.nl/uploads/foto/OS80-8.CRW
400mm f5.6 can be found here : www.isfcalibraties.nl/uploads/foto/OS400-56.CRW
400mm f8 can be found here : www.isfcalibraties.nl/uploads/foto/OS400-8.CRW

The Tamron :
90mm f2.8 can be found here : www.isfcalibraties.nl/uploads/foto/TAMRON90-2,8.CRW
90mm f8 can be found here : www.isfcalibraties.nl/uploads/foto/TAMRON90-8.CRW

Please give it 20 minutes from now before the upload is completed.

And let me know what the experts think.

Greetings,
Frank

[kraterz]

Could you post JPEG's or TIFF's? My PC here can't handle CRW's.

[Wickedfn4u]

Could not get it to open too?

[J.A.F. Doorhof]

I will post JPG's now.
Please change the CRW to JPG.

Will be on there in about 20 minutes.

Greetings,
Frank

[ron chappel]

Take your time frank,don't make yourself sick!
Here's a hint though...you know when they say 'trow up
and you'll feel much better'?
Try throwing up on a windows computer-you'll DEFINITELY feel MUCH better!! :lol: :lol:

[PaulB]

Throw up on ANY computer and you'll need a new keyboard!

[J.A.F. Doorhof]

:D
We sell PC's
So when I throw up over them it will cost me money.

[karusel]

I have an idea: throw up in a printer. It'll surprise the hell out of the guy trying to print... :lol: :twisted:

[karusel]

Sick ( :wink: ) jokes aside, great job on the lens!

I must admit I'm a little disappointed in Sigma lens... I thought it were a little sharper wide open @400. I would sooooo love to see a comparison to Canon... But still, I find the sharpness @8 satisfiactory, considering the lens costs $200 - $400 less...

[J.A.F. Doorhof]

I think the sharpness at 5.6 was due to motion, as mentioned my tripod is not superb.
If you look closely you can see motion blur.

In normal work I shoot almost exclusivly wide open and I love the outcomes, even on big prints.

Greetings,
Frank

[karusel]

Then I'm sorry to say that, but if there was ANY motion blur the test shots are albeit worthless.. well, unless you told us if OS was on and in what mode...

That said, now I'm sure, more than ever that I'll get the Sigma 80-400 instead of Canon 100-400.

[J.A.F. Doorhof]

OS was off.
It was mounted on a tripod in my studio.

I checked the pics on my display and they looked allright, I did not feel quite well that day (and today ;D).

When you look closely it does not look like softness of the lens I think, but maybe the experts can say ?

Greetings,
Frank