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Thread started 25 Jun 2010 (Friday) 15:13
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Struggling with the Tamron 17-50 in low light

 
g3org3y
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Jun 25, 2010 15:13 |  #1

Anyone else?

Using the Tammy for some 'inside' shots around the dinner table last night (and a bit outside). Light wasn't too bad tbh - opened up at f/2.8 and the lens was hunting like a hunty thing (i.e. a lot!). Quite surprise as I would have expected this from the Nifty Fifty, but perhaps not the Tammy. To note, it was on ISO 1600 and slightly underexposing. No flash.

Would it have performed better on a different body (currently on a 400D)?

Anyone else finding this lens a struggle in low light?


EOS 400D, Sigma 10-20, Tamron 17 -50, Nifty Fifty f/1.8, Canon 100 f/2, 70-200L f/4, Speedlite 430EX II.

  
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watt100
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Jun 25, 2010 15:24 |  #2

g3org3y wrote in post #10426568 (external link)
Anyone else?

Using the Tammy for some 'inside' shots around the dinner table last night (and a bit outside). Light wasn't too bad tbh - opened up at f/2.8 and the lens was hunting like a hunty thing (i.e. a lot!). Quite surprise as I would have expected this from the Nifty Fifty, but perhaps not the Tammy. To note, it was on ISO 1600 and slightly underexposing. No flash.

Would it have performed better on a different body (currently on a 400D)?

Anyone else finding this lens a struggle in low light?

I don't find it a struggle as long as something you're aiming at has light on it,

an example with the Tamron 17-50 in low light @ f2.8, ISO 800 (XSi)


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Yaamon
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Jun 25, 2010 15:30 as a reply to  @ watt100's post |  #3

I don't find that my tamron17-50 lens struggle or hunt, but what I do find that indoors if you do not use the flash it will get a focus lock but the pictures are not perfectly focused.

Outdoor focus is not a problem.


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tkbslc
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Jun 25, 2010 15:34 |  #4

watt100 wrote in post #10426612 (external link)
I don't find it a struggle as long as something you're aiming at has light on it,


So it doesn't hunt in low light when the light isn't low?  ???


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ProD1gy_KiD
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Jun 25, 2010 15:37 as a reply to  @ tkbslc's post |  #5

i have the same thing happen to me with the tammy. thinking of selling it in the near future.




  
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mmahoney
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Jun 25, 2010 17:41 |  #6

The lens is just one factor in obtaining good & quick low-light auto-focus .. the others being the body and the photographers technique.

Rebels generally have the least effective AF system of all Canon DSLR's, and many newer photographers fail to fully understand their role in obtaining good autofocus .. so before you blame the lens consider what else may be going wrong and how you can improve it.

FWIW I used a Tammy 17-50 2.8 extensively for two years with a 40D and was more than pleased with it's autofocus performance.


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g3org3y
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Jun 25, 2010 18:02 |  #7

mmahoney wrote in post #10427232 (external link)
The lens is just one factor in obtaining good & quick low-light auto-focus .. the others being the body and the photographers technique.

Rebels generally have the least effective AF system of all Canon DSLR's, and many newer photographers fail to fully understand their role in obtaining good autofocus .. so before you blame the lens consider what else may be going wrong and how you can improve it.

FWIW I used a Tammy 17-50 2.8 extensively for two years with a 40D and was more than pleased with it's autofocus performance.

As ever, I am always willing to improve my technique. Any hints?

It just surprised me given that in the situation the light wasn't as low as I thought would cause issues.


EOS 400D, Sigma 10-20, Tamron 17 -50, Nifty Fifty f/1.8, Canon 100 f/2, 70-200L f/4, Speedlite 430EX II.

  
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westernminnguy
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Jun 25, 2010 18:17 |  #8

g3org3y wrote in post #10426568 (external link)
Anyone else?

Using the Tammy for some 'inside' shots around the dinner table last night (and a bit outside). Light wasn't too bad tbh - opened up at f/2.8 and the lens was hunting like a hunty thing (i.e. a lot!). Quite surprise as I would have expected this from the Nifty Fifty, but perhaps not the Tammy. To note, it was on ISO 1600 and slightly underexposing. No flash.

Would it have performed better on a different body (currently on a 400D)?

Anyone else finding this lens a struggle in low light?

All lenses/camera combos(using AF)are hungry for contrast and light that shows contrast. Anything the camera can do(a preflash or whatever) to show that contrast will help.

The attached picture comes from a Tammy 17-50, the VC version plus a 7D...shot a 1/10 of a second(would you believe??) and f/2.8. The color is a bit strange because the only light available was an incandescent bulb across the room...75 watts.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


FWIW, I was never tried to shoot a shot like this at 1/10 of a second before I bought this Tamron.

The only other f/2.8 lens I own(and will never sell) is my f/2.8 IS Canon 70-200 but I never use this lens for close ups like I did here with my dog Buddy.

The Tamron 17-50 is good lens...when used for what it was designed to do.

If you need more light.....

Go with the VC version of the Tammy, or a similar Canon or Sigma lens....

They are all very good.

Best of luck.

:)

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Snydremark
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Jun 25, 2010 18:25 as a reply to  @ g3org3y's post |  #9

Making sure that your subject has enough contrast to it for the camera to GET focus. If your subject is monotone at all it begins to be hard for the AF system to lock on.


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mmahoney
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Jun 25, 2010 19:30 |  #10

g3org3y wrote in post #10427314 (external link)
As ever, I am always willing to improve my technique. Any hints?

Use center point, single shot. Focus on a high contrast areas. Use the AF assist light if using an external flash. Pump the AF button by pressing it more than once.

Any more I'd have to charge 'ya :lol::lol:


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jrs-7
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Jun 25, 2010 21:36 |  #11

As others have said, use the centre focus point as it is the most sensitive, and aim at a high contrast area.

I love the lens, don't give up on it.

Here is a photo at the Australian War Memorial I took a few years ago with 400D and 17-50 Tamron in very low light.

17mm, f2.8, 1/30 sec, iso 1600, hand held

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randomlinh
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Jun 25, 2010 23:06 |  #12

mmahoney wrote in post #10427657 (external link)
Use center point, single shot. Focus on a high contrast areas. Use the AF assist light if using an external flash. Pump the AF button by pressing it more than once.

Any more I'd have to charge 'ya :lol::lol:

this.

I shot a wedding reception outside, after 5pm, in mid october. the AF assist on my 550EX did wonders for the tamron.

not always an ideal or possible solution.. but you do what you can do




  
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garycoleman
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Jun 26, 2010 01:04 |  #13

yes the Tamron 17-50 is terrible in low light regardless if using it with my XSi or 7D.

Then I got a Canon 17-55 and it snaps in to focus instantly in low light. This is one of the main advantages of the Canon 17-55 vs Tamron 17-50


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watt100
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Jun 26, 2010 04:36 |  #14

garycoleman wrote in post #10428939 (external link)
yes the Tamron 17-50 is terrible in low light regardless if using it with my XSi or 7D.

Then I got a Canon 17-55 and it snaps in to focus instantly in low light. This is one of the main advantages of the Canon 17-55 vs Tamron 17-50

maybe it depends on the photographer!
my Tamron 17-50 snaps into focus "instantly" in low light - even dark museums !


Tamron 17-50 2.8 ISO 1600 @ f2.8 (with XSi (450D)

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klr.b
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Jun 26, 2010 05:07 |  #15

tkbslc wrote in post #10426647 (external link)
So it doesn't hunt in low light when the light isn't low?  ???

:lol:


gordon
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Struggling with the Tamron 17-50 in low light
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