Sony Dslr Özellikleri Ve Lensleri

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sigma 17-70 slow AF? but dear Tamron 17-50????

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Loves forum municipality!
I read up to now actually only positive over this objective and am scarce to buy it to me. Now I am discovered with the Stoebern in the CAN on forum that some want to transfer to the Tamron 17-50, because they are not content with the AF speed sigma. Now I cannot decide also whether I should wait perhaps nevertheless for the Tamron.

Does Af- thespeed for all camera connections behave directly, or does give it for KoMi these Af-difficulties not?
If it would be to be waited better for the Tamron 17-50, could be faster this in the AF and perhaps still sharper pictures supply!

Would be very grateful for your experiences and Tipps.


chris59
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08.06.2006, 15:12 #2
Mischermann0
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Registered since: 08.08.2005
Place: Wolkersdorf
Contributions: 205 AW: sigma 17-70 slow AF? but dear Tamron 17-50????

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With the AF speed are actually completely content. The sigma is accurate around worlds faster than the kit objective and normally also. The AF only unfortunately lies beside with artificial light (fluorescent tubes and/or candle light) hie and there. At first have I totally helpless, now at least found out, under which conditions happens. Interestingly enough of all ok is with daylight or usual bulbs.

But back to the question: The AF is very fast according to my opinion. A SSM/USM spoiling see that perhaps differently, in addition, for those it should be enough.
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08.06.2006, 15:33 #3
sunfish77
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Registered since: 05.07.2005
Contributions: 44 AW: sigma 17-70 slow AF? but dear Tamron 17-50????

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Quotation:
Quotation of Mischermann0
The AF is very fast according to my opinion. A SSM/USM spoiling see that perhaps differently, in addition, for those it should be enough.


if I see exactly the same, it has likewise and is content with the AF speed, even if there is surely faster.
Absolutely I find the macro function, which is for a "Immerdrauf" (when such with me in the employment to class) madly and often profitable.
I cannot say anything to Zm Tamron, but also coming 16-80 of Sony/Zeiss will be interesting...
http://www.dpreview.com/articles/Son... s/SAL-1680.jpg


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09.06.2006, 12:09 #4
chris59
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Registered since: 28.01.2006
Contributions: 8 sony Zeiss 16-80

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for the time being thanks for the fast answers!!
this objective becomes interesting - in addition, rather expensively?! Very brightly it is also not straight - however easier for it perhaps!


to the sigma: really faster than the kit?!! the kit seems to me already fast - only I find the soft draughtsman illustration nervig! Is the sigma really much sharper (also without sharpness to +2 set?)

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Changed of chris59 (09.06.2006 at 12:14 o'clock).


chris59
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12.06.2006, 09:10 #5
sunfish77
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Registered since: 05.07.

Selam Tolga, verdiğin linkte konuşulan AF hızı üzerine genellikle, biraz yavaş olduğunu söylüyenler olmuş ve çok hızlı olduğunu söyleyenler..ama iyi bir objektiv olduğnu da söylenmiş ve Minolta için bu tartışmalar yürütülmüş... Tamron hakkında da henüz kimse kullanmadığı için bir şey söylenmiyor... kısaca bu yani..

tamer arkadaş bunu kim bize çevericek peki.. ya da önemli olan noktaları söyleyecek...dada mı? .. hadi öyle olsun... zaten koştura koştura bir gün istifasını verecek...

Aktardığın bilgiler için teşekürler ba

ba, tabii ki cevirirdim ama sen zaten almancasindan cevirmissin olayi.. tamer sanirim babelfish'de almancadan ingilizceye cevirmis ayni konusmayi..
bu arada ingilizceye bayagi kotu ceviriyor babelfish..

....
gercekten de sigma hizli AF'e sahip (yavasmis dedirtmiyor..) ve cok kullanisli bir lens.. ama daha once de soyledigim gibi tamron'un kalitesi de cok cok iyi..

arkadaşlar,
şu lens tam aradığım gibi görünüyor.
Sigma 70 mm f2,8 (105 mm) 1/1 makro
bugün çıkmış dumanı üstünde
Canon ve nikon'un 60 mm f2,8'ine (onlar da 1/1 makro) rakip geldi sony için.

http://www.imaging-resource.com/NEWS/1152537090.html


NEW PRODUCT INFORMATION - MACRO 70mm F2.8 EX DG

Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations
Super multi-layer lens coating reduces flare and ghosting
Floating focus system provides extremely high optical performance from infinity to 1:1 Macro
Equivalent field of view to 105mm macro lens when used on a digital SLR camera with an APS-C size image sensor
The Sigma Corporation is pleased to announce the launch of the new MACRO 70mm F2.8 EX DG lens. This medium telephoto macro lens is ideal for both digital SLR cameras and 35mm film SLR cameras. The 70mm focal length gives an equivalent field of view as our popular 105mm macro lens when used on digital SLR cameras with an APS-C size image sensor.

The design of this lens makes it suitable for taking pictures in all situations from infinity to 1:1 macro, both with natural light conditions or flash.

A Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations and produce an exceptional level of optical performance. Sigma's super multi-layer lens coating reduces flare and ghosting, and helps create a natural color balance.

The floating focus system provides extremely high optical performance from infinity to 1:1 Macro.

A 'Focus Limiter Switch' in incorporated on the lens, improving the speed and accuracy of autofocus by limiting the focus range. A screw-in lens hood is included for convenient use of circular polarizing filters.

* The appearance and specifications are subject to change without notice.
* Nikon and Pentax mount do not have an aperture ring, therefore depending on Camera model some functions may not work.

#drtamer' tarafyndan 10.07.2006 21:31:46 tarihinde düzenlendi.

gozunaydin o halde tamer.. buyuk ihtimalle kalitelidir..

Arkadaslar az once sony aradım."Temmuzun son haftası piyasaya çıkacak" dediler.Biraz daha sabır sunun surasında 2 hafta kaldı.Fıyat soylemediler..

yahu turkce, sen işini gücünü bırakmışsın milletti yatıştırmaya çalışıyorusun .. bırak insanlar sabırsız kalsın değil mi.. ..

tamer arkadaş objektive bir diyeceğim yok da sigmanın uygun gördüğü fiyata bayağı diyeceklerimiz olmalı.. 480.euro... oysa canon'un 360 euro, ve 50 euro'da chash olarak canon'da geri alıyorsun 300 euro'ya iyi bir fiyat değil mi... gerçi sigma'da o civarlarda seyredecek bir iki ay içinde....

ba, eger ki canon makine alinacaksa, canon 60mm macro'nun kalitesi zaten mukemmel, sigma'ya gerek yok.. fiyatini cok daha az olmasi gerekiyor ki satabilsin sigma..
mesela canon 100mm macro ile sigma 105mm macroyu dusun.. bizim burada 100-150 pound farklilik var aralarinda..