Todel kad tamsesnis daug. f2.8 turesi tik iki 20mm, o ten visam diapazone.

The apertures change as you zoom as follows:17-20mm f2.8 ; 21-24mm f3.2 ; 
25-34mm f3.5 ; 35-54mm f4.0 ; 55-70mm f4.5


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"Pagonis" <fdfd@ee.lt> wrote in message 
news:gtbnij$i08$1@trimpas.omnitel.net...
> Labai neismanau, o kodel tarkim ne Sigma 17-70mm f2.8-4.5 DC Macro HSM? 
> Butu galima nuspausti pardavejus.
>
> "WA5" <nera@nebus.nereikia> wrote in message 
> news:gtbjmk$b7r$1@trimpas.omnitel.net...
>> Tamron 17-50 2.8
>> Sigma 70-200 2.8
>>
>>
>> "Ds" <daumantui@yahoo.com> wrote in message 
>> news:gtbimi$9ih$1@trimpas.omnitel.net...
>>> Kokie galeti buti 2 sviesus stiklai is situ gamintoju, su kuriais 
>>> padengciau
>>> nuo 17, 18 arba 24 iki 200, 300 mm zidinio nuotoli? Dekoju.
>>
>>
>
>