ANY IDEAS ABOUT THE SIGMA 150MM DG MACRO??

[yannis]

FIRST OF ALL I AM A NEW MEMBER, AND MY ENGLISH ARE NOT THAT GOOD (I AM FROM GREECE).
ANYWAY I LOVE MACRO BUT I AM NOT HAPPY WITH MY DIGITAL GEAR (SIGMA 150MM MACRO DG).
THE PROBLEM IS THAT IS NOT AS SHARP AS I NEED TO.I USE TO SHOOT WITH A TAMRON (MACRO 90MM ANALOG SERIES) AND I SOLD IT TO GET THE NEW SIGMA 150MM TO INCREASE THE DISTANCE FROM THE SUBJECT & TO GO TO THE DIGITAL RANGE OF LENSES. NOW COMPAIRING THE SHOTS (WITH A LARGE DEPTH OF FIELD 11F-22F) I THING THAT THE OLD TAMRON WAS SHARPER.SO ANYBODY KNOWS WHAT IS GOING ON WITH IT?
WAITING FOR YOUR COMMENTS.
THANKS, YANNIS.

[Mr. Pickles]

I do not have the Sigma, or the Tamron, but in all that I read, the Tamron is a bit better optically. I think the reason you got the Sigma (farther working distance), is the reason to get it over the Tamron or another 100mm range Macro lens.

If yours is a "lot" different, then try and swap the Sigma for another Sigma. Might be a slightly bad copy?

[Max@Home]

Hello Yannis from Greece!

First of all: welcome aboard the PhotoCamel!

Second: could you please write in normal, non-capitalized font? writing in capitals is considered SHOUTING on the Internet, and you may be from Greece, your English is good enough that we understand you, no need to raise your voice )

Third, and finally about the lenses: a question: what camerabody are you using?

The Tamron 90mm Macro, Canon 100mm Macro and Sigma 105mm Macro are considered the sharpest Macro-lenses around (in the order I gave ), so your sharpness-issue with the Tamron surprises me.

I do not know the Sigma 150mm, but have read reports raving about it's sharpness, so your results are not what I would have expected...

One thing I should mention: at F13/F16/F22 (depends a little on the specific camerabody) the diffraction-effect will work against you in getting a sharper image.

A good read about the diffraction-effect: http://www.cambridgeincolour.com/tut...hotography.htm

My guess is that both lenses can't be bad, so perhaps your camera needs a trip to the servicecenter to have the AutoFocus adjusted?

Hope this helps some, *my* €0.02 worth...

kindest regards!

Max@Home

[yannis]

Thanks to ( Mr. Pickles & Max@home) about the infos, the link, and sorry about the capitals.This is my first entry in a forum.Please fix anything else i do wrong.Anyway, i will start with my film gear.
Body:canon F1/FTb/AE-1 PROG/T90
Optics:canon FD 50mm 1.4f/canon FD 35-70mm 3.5-4.5f/vivitar series1- 70-210mm 3.5f/tokina 28mm f??/
Chinon 500mm mirror (with fiting adaptor)/2x converter (not a canon)/Macro extender adjustable (not rings but rail), by canon (i do not know the proper name for it but i use to love it for macro).
Light-flashmeter:minolta (do not remember type).
Digital gear:Fuji finepix s7000/Canon 350D(this is the one i am using now).
Optics for the 350D:canon standard EFS 18-55mm 3.5-5.6f/sigma macro 150mm 2.8f DG HMS/
sigma DC18-125 3.5-5.6f.
Flash:Nissin gn48/Metz gn45.
Tripod:Manfrotto 190 pro b.
Head:Manfrotto 701 RC2 (for videocams).
I hope i did not forgot something.
I have seen the site (http://www.RC.com/tutorials/diffract...otography.HTML), and i know what are you talking about (remember some Greek books) but i have seen deference in general, bitwin the 90mm tamron & 150mm sigma.Also in most cases can not go lower than f11 because the 150mm sigma got smaller depth of field than the 90mm tamron.

Anyway thanks to all again, that was question for today (but i have match more to go).
Also if somebody wants to check out some of my digital work go to www.microcosmos.gr
(it is not ready yet but i am working on it).
Oh my God my Greek to English dictionary is on fire....Talk to you latter bye.

[Epphoto]

Yia sou file mou Yianny
I'm a Canon man i use to own one of this Sigma 150mm, I took lot of shoots with this lens with in 3 days i have sold them
I don't really like the color compare to canon, and they're sow slow it drove me crazy, This lens getting very good reviews
But my personal experience with them i don't like them at all
My succession to you is
Try to buy the Tamron 180mm i know you will like them a lot better then the Sigma 150mm
I have the Canon 180mm and the Canon 100mm macro and I love them
Reade some reviews about the Tamron they getting excellent reviews
Exaristo
Pistevo na se voithisa ligo
This is my website you can see some of my macro work there www.epphoto.net
Thanks Emmanuel

[dc2]

Welcome aboard from the UK .
I have visited Greece many times and must say I love the country.
By the way Yannis I believe is John in English and that is my name .
So you have a cool name.
This picture was taken at Zante [Zakinthos Island]

[JDArt]

Originally Posted by dc2

Welcome aboard from the UK .
I have visited Greece many times and must say I love the country.

You ever had those Greek potatoes that are covered in some kind of salty substance? I had them on Tenerife and have never forgotten how good they are. What are they called?

[dc2]

Originally Posted by JDArt

You ever had those Greek potatoes that are covered in some kind of salty substance? I had them on Tenerife and have never forgotten how good they are. What are they called?

Yes but cannot remember what there called.
My fave dish out there is kleftiko [Greek lamb cooked till it melts in the mouth. yummm]

[Epphoto]

Patatokeftedes??
You got my on this one

Originally Posted by JDArt

You ever had those Greek potatoes that are covered in some kind of salty substance? I had them on Tenerife and have never forgotten how good they are. What are they called?

[Epphoto]

Come on man you make me hungry
And doctor put me on Diet

Originally Posted by dc2

Yes but cannot remember what there called.
My fave dish out there is kleftiko [Greek lamb cooked till it melts in the mouth. yummm]

[JDArt]

Originally Posted by Eppaint2

Come on man you make me hungry
And doctor put me on Diet

These are the best potatoes in the world, too.

[dc2]

Originally Posted by Eppaint2

Come on man you make me hungry
And doctor put me on Diet

Sorry but I have lost a fair bit of wieght so I can pig out on food now.
OOpps and beer

[yannis]

Can somebody tell me how can i answer to particulate guy.
Should i pres the Reply button on the bottom of the page or the Re: button on the top of the guy i want to answer to
If my new writting goes anyway on the bottom of the page then dont worry. i have got it.
(sorry i am new on internet).

Yannis

[JDArt]

Yannis, you press the Quote button on top of the guy you want to answer.

[yannis]

Thanks re Manoli for the infos.I don't think any new lens is for my pocket right now (specially the manual canon 1:5 magnification, don't remember the type but is my macrodream for me).
Anyway i have some ideas (Greek patents, don't imagine anything expensive) about the magnification gain (i will post it soon).
By the way i like your work a lot.
Sorry for asking but are you in Greece? (this is what i can tell from the macroshots).

Topshot my friend Yanni or John from U.K.
I have never been there (no hollydays for me the past 2 years work work work you all know i think).

No comments about food from me my friend JDArt, i have been seek for a week so i don't want to torches my self imaging the taste of it.
(Correct me if any mistakes generally speaking).
Also thanks about the Quote button info JDArt.

This message is got something for everyone...next time.

Thanks again.