just discovered front focus on lens

screamingsnapshots · 27th September 2008

I was reading the forums and tried a technique to see if my sigma lenses have front focus (i shot a newspaper and the few lines ahead of my focal point was in focus). now that i've identified the problem,

how long does the sigma service centre take to rectify the problem?
can i just walk in with my lens, or do i have to set an appointment?
and does anyone know how much it might cost?

thanks in advanced!

godzilla60 · 28th September 2008

Originally Posted by screamingsnapshots

I was reading the forums and tried a technique to see if my sigma lenses have front focus (i shot a newspaper and the few lines ahead of my focal point was in focus). now that i've identified the problem,

how long does the sigma service centre take to rectify the problem?
can i just walk in with my lens, or do i have to set an appointment?
and does anyone know how much it might cost?

thanks in advanced!

is it very bad? can u live with it? if not, there's always a possibility that when u send it in, other problems may surface coz i believe they may have to dismantle the lens and re-assemble back again to solve it...

artmillinum · 28th September 2008

Originally Posted by screamingsnapshots

I was reading the forums and tried a technique to see if my sigma lenses have front focus (i shot a newspaper and the few lines ahead of my focal point was in focus). now that i've identified the problem,

how long does the sigma service centre take to rectify the problem?
can i just walk in with my lens, or do i have to set an appointment?
and does anyone know how much it might cost?

thanks in advanced!

Depending on the model, the local sigma service center might just have the jig to adjust your lens. However, you will need to bring your camera along so that they can adjust the focus to your cam.

The last time I sent in mine, they took around 2 hours to adjust it. After that focus is swee swee...

Cheer...

screamingsnapshots · 29th September 2008

thanks guys! i called up the Sigma service centre and they said it can be done in a few hours. i've set my appointment for tmr. they told me that i gotta bring down my camera so they can calibrate it to my camera coz they said each lens has to be calibrated to one camera body.

not a problem for me, but im just wondering, what if a person has more than one body, and the lens can only be calibrated to one. means if he swaps his lens to another body, the photos wont be properly focused again?

27th September 2008	#1
screamingsnapshots Member Join Date: Dec 2007 Posts: 114	just discovered front focus on lens I was reading the forums and tried a technique to see if my sigma lenses have front focus (i shot a newspaper and the few lines ahead of my focal point was in focus). now that i've identified the problem, how long does the sigma service centre take to rectify the problem? can i just walk in with my lens, or do i have to set an appointment? and does anyone know how much it might cost? thanks in advanced!

29th September 2008	#4
screamingsnapshots Member Join Date: Dec 2007 Posts: 114	Re: just discovered front focus on lens thanks guys! i called up the Sigma service centre and they said it can be done in a few hours. i've set my appointment for tmr. they told me that i gotta bring down my camera so they can calibrate it to my camera coz they said each lens has to be calibrated to one camera body. not a problem for me, but im just wondering, what if a person has more than one body, and the lens can only be calibrated to one. means if he swaps his lens to another body, the photos wont be properly focused again?