sigma 50-150 2.8

[miggydonida]

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hi miggy, did I read you right? you do lens calibration, with Sigmas in particular? I'm planning on getting this lens kasi (or the Sigma 70-200mm Macro, but I'm still torn between the two. do you calibrate this rin?) since it was given a very nice review at Shutterbug>>

http://www.shutterbug.net/equipmentr...ses/0607sigma/

However, it seems to be a fact for Sigma lenses that you have to try several copies before you get full satisfaction from them (bakit kaya?walang ba silang QA?after all these years??). Sa tingin ko if it wasn't for the price advantage di na sana talaga bibili ang photogs ng brand nila. And to go through several copies is somewhat impractical for me since I'm from out of town. Any suggestions how to get a good copy at the store pa lang?

Hi Bambam,

I don't calibrate lenses... I can only help you check if the lens that you are planning to get has front focus or back focus problems.

It is true that Sigma lenses has this issue.. I am not sure about the lack of a good QA.. I guess they don't.. Coz if they did, we wouldn't be talking about this here right? That's why I strongly urge you to test the lens thoroughly before you leave the store.. I posted in one my earlier replies how to test it using a measuring tape.

With regards to the 50-150, I must say it is a very practical, decent, lightweight, fast (HSM), and best value for the buck lowlight telephoto lens. I used to have one and I am very happy with how it performed. Until I went for an all Nikon setup, this was my money lens for telephoto shots for lowlight shooting.

So whichever way you plan to go, be it the 50-150 or 70-200 lenses of Sigma, just make sure you test the lens for the FF and BF issues. And if you do get a good copy, I'm sure you won't regret it.

HTH

Regards,
Miggy

[michaelsalomon]

im thinking of actually getting this lens. then sell my 28-70 sigma.

well thats just a thought.

[miggydonida]

im thinking of actually getting this lens. then sell my 28-70 sigma.

well thats just a thought.

That's not such a bad idea, Mike.

[ErwinTay]

Hi.. Its pretty simple just position a measuring tape (the one's used by carpenters) that has a button that is retractrable at a 45 degree angle.. and aim for a certain number on the tape using different focal lengths of your lens.. and then shoot..

so ex. if your aiming for lets say the "8"cm line, and once you focus and shoot and you look at the viewfinder and you see that the "7"cm line is clearer than the "8", then you have a front focus issue.. If you're aiming for "8" and the "9" line is clearer, then it has a back focus problem.

HTH

Clarify lang po, Miggy, How do I position the Tape measure? Flat on the table, standing or I bend it to have a 45degree angle? Thanks.

[diegodanila]

May OS version ba ang lens na ito? I have shaky hands

[diegojose]

nope no OS version. that'd be a nice upgrade/update to this lens

[orlandoendaya]

Now that you've mention it. Any news/gossip on whether they're planning to release an OS version of this lens? If they do.. will be aiming for a flash gun first and wait for the OS version.

[miggydonida]

Clarify lang po, Miggy, How do I position the Tape measure? Flat on the table, standing or I bend it to have a 45degree angle? Thanks.

make sure the tape measure is positioned this way.. extend it.. and make sure that it is positioned straight at a 45 degree angle.

[pio sugay]

OR, if you'll be doing this at home and you have all the time in the world, yuo can dowload a chart

http://www.focustestchart.com/chart.html

[ErwinTay]

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Thanks Miggy! Mali pala ang mga ginawa ko. hehehe.

@pio, thanks for the link.