Bringing a focus test chart while lens shopping


bojee

New Member
Feb 4, 2011
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#1
Hi all!

Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
 

Reportage

Senior Member
Nov 24, 2008
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#2
Dont worry about Sigma. As long under warranty they can do lens adjustment but only the first time is free. Have to book appointment with them first though.
 

bojee

New Member
Feb 4, 2011
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Singapore
#3
Dont worry about Sigma. As long under warranty they can do lens adjustment but only the first time is free. Have to book appointment with them first though.
Yeah, but the reason why I would like to bring a focus test chart is to avoid the hassle of sending the lens for calibration. I would like to get a decent copy as much as possible.
 

pinholecam

Moderator
Staff member
Jul 23, 2007
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#4
Don't need to.
Just place on table, focus on something (eg. standing table calendar; lens box, etc) and use the camera self timer to take the shots.
 

xperia

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Apr 3, 2011
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#5
if u really want to do an accurate focus check, both focus test chart + tripod are required. some of the reason for off-focus may be due to handshake rather than actual lens focusing issue.
 

daredevil123

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Oct 25, 2005
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lil red dot
#6
xperia said:
if u really want to do an accurate focus check, both focus test chart + tripod are required. some of the reason for off-focus may be due to handshake rather than actual lens focusing issue.
One way to get around that is to use flash and force shutter speed up.
 

bojee

New Member
Feb 4, 2011
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#7
One way to get around that is to use flash and force shutter speed up.
Thanks DD. It would be weird to lug around a tripod while testing the lens.

Anyway, has anybody tried bringing a focus test chart to stores to test?
 

daredevil123

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Oct 25, 2005
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lil red dot
#8
bojee said:
Thanks DD. It would be weird to lug around a tripod while testing the lens.

Anyway, has anybody tried bringing a focus test chart to stores to test?
I did once in CP. No big deal.
 

Octarine

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Jan 3, 2008
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Pasir Ris
#9
Thanks DD. It would be weird to lug around a tripod while testing the lens.
Anyway, has anybody tried bringing a focus test chart to stores to test?
What lens do you want to get? Mind the minimum focus distance. For some telephoto lenses it's quite long and you need space in the shop. Nothing that you want to do on a Saturday afternoon. Also, don't try this in shops like Bally and other jokers. OP should be fine. Give them a call to check stock.
 

catchlights

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Staff member
Sep 27, 2004
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Punggol, Singapore
www.foto-u.com
#10
don't do this during weekends, else somebody might post photo of you testing the lens with tripod, laptop and focusing chart in this forum. :bsmilie: :bsmilie: :bsmilie:
 

bojee

New Member
Feb 4, 2011
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#11
Octarine said:
What lens do you want to get? Mind the minimum focus distance. For some telephoto lenses it's quite long and you need space in the shop. Nothing that you want to do on a Saturday afternoon. Also, don't try this in shops like Bally and other jokers. OP should be fine. Give them a call to check stock.
A Sigma 24mm 1.8

Ok, will do. I'll call them first. Thanks.
 

bojee

New Member
Feb 4, 2011
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#12
don't do this during weekends, else somebody might post photo of you testing the lens with tripod, laptop and focusing chart in this forum. :bsmilie: :bsmilie: :bsmilie:
Hahahahaha yeah I will be discreet. I will just bring a chart and just zoom in on my cam. No tripod and laptop in hand.

:)
 

luna_sea83

Senior Member
Jul 17, 2005
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#13
if you wanna look more natural, bring along newspaper.

I believe it won't attract as much attention compared to a focusing chart.
 

eulee

New Member
Sep 30, 2004
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www.photographybyeulee.com
#16
Hi all!

Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
Actually just use a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.
 

eulee

New Member
Sep 30, 2004
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0
www.photographybyeulee.com
#17
Hi all!

Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
Actually just use/borrow a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.
 

bojee

New Member
Feb 4, 2011
417
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Singapore
#18
Actually just use/borrow a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.
Thanks for the tip. :)
 

Turbonetics

Senior Member
Feb 19, 2009
2,701
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#19
where can we actually get a copy of the focus test chart?
 

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