lenses have different gearings. like the sal16-105 has short gearings. even with longer range, it's faster at focusing compare to shorter 18-70mm kit lens. slightly faster than 16-80mm zeiss.
sony 18-250 is faster focusing compare to its tamron 18-250 sibling

This post has been edited by soulfly: Dec 24 2009, 01:59 PM

it is very trivial to say that AF speed is dependant on one thing only.. AF speed depends on a number of factors.. lens architecture, sensor, af-assist, etc.. betul tak albert?

i have to vouch for this~ i am using the Sony sal18250 and its noticeably faster than the tamron~

does the price have big distance with a550?

actually 3rd party lens is always slow then official lens right, alot photography they like use back the 1st party lens more then 3rd party, 3rd party mean is sigma, tamron and tonika.

i vote for

b. Tamron 17-50mm f2.8

using it so far no problems

guys, who's still on the look out for A700?

saw this on FTZ

a700 body only| 8G card | battery |charger | manual | usb cable | LCD protect| remote |video cable| CD |all items included in box |ver 4| Shutter Count around 12k (3 month/Condition 9.9/10 RM2600)...sony lens 70-300mm f4.5-5.6 ssm G (1 month/Condition 10/10 RM2300)...sony big bag LCS-AMSC30 (3 month/Condition 9.7/10 RM200)...location COD at PJ area Only ALL item(lowest price)pls call/sms 012-2341033 Thx - chan <keezei@hotmail.com>

did someone mentioned my name?

go for sigma 20mm f/1.8

yeah...i second that

correct me if im wrong...for portrait..i notice that using long range the result is better than using close range most of the time(assuming the size of the model in the picture is the same)..the face usually looked more 3D from long range..and it looked flat when we shoot with wide lenses..

i 2nd that.

200mm F4 is much nicer then 50 F1.4.

Looking for that G lens only Hmm...1 month old but I rather get brand new at RM200 more. Quite hassle if wanna do those warranty thinggy.

albnok : If vivid is 0/+1/+3/-2/-1 right, how about other more widely use modes, like landscape/potrait/standard? (:

Me vote for CZ1680


Kipungit Waterfall

i am interesting normally how ppl to put rating on their selling items score.... 9.7/10, which formula they use to calculate it to sold at the price?

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Added on December 24, 2009, 10:05 pmlong focal length is it require to be stand more far to the subject compare 50mm, then how it can have same size compare 50mm?

This post has been edited by jimlim007: Dec 24 2009, 10:18 PM

ieR: SAM/SSM may or may not be faster than a screw-drive lens. For example it is widely known that the Nikkor AF-D 50mm F1.4 focuses faster than the Nikkor AF-S 50mm F1.4G SWM.

Focusing accuracy also depends - the Tamron 70-200mm F2.8 is bad and slow on the Canon/Nikon but good and fast on the Sony/Pentax.

kevinwcw: I keep forgetting to ask! Argh. There are talks about the A550 with 18-55mm kit lens coming in soon. If you don't need a camera now, you might save money by waiting!

lehtung: The butterfly showdown is awesome! I hope you got one from the side as well!

achew: Not really. It all depends on the angle of the face.

Kul | Mo0: It's just how I like it, with a wee bit of vividness.

i see the comparison of a550 and a500 actually not much different if a500 will be cheaper a lot then i will consider for tat...aiming on the cmos sensor

I just get my A550 + 11-18mm awesome

ic ic, but there is a purpose of SAM/SSM rite? supposely SAM helps a lot in AF-C... SSM for bigger lens with bigger screw to turn bigger elements where it might indirectly cause a long term damage to the internal motor if no SSM for Huge Lens? but IF an SSM/SAM is damage, does the internal able to turn it? or the internal's motor is bypassed (no connection into the lens itself?)? i cant imagine the money involve to repair a SSM