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Thread started 18 Nov 2011 (Friday) 20:53
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Tamron 28-300 shoots weak

 
Chappy
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Nov 18, 2011 20:53 |  #1

Why did this lens seem to shoot faded pics? I have to run some of them through Photoshop. Is it a cheap lens or do I just need to get more familiar with it? I'm think I should turn up the camera contrast while using this lens.

Right out of the camera :

IMAGE: http://i126.photobucket.com/albums/p118/Photogear_2007/Photo%20URLs%202%20Share/Initsday1.jpg

After Photoshop fixes :

IMAGE NOT FOUND
HTTP response: 504 | MIME changed to 'text/html' | PHOTOBUCKET ERROR IMAGE

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JonK
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Nov 18, 2011 21:01 |  #2

Doesn't look "faded" the original looks over exposed


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Nov 18, 2011 21:10 |  #3

The image EXIF says you shot the photo at 1/45 f/6.7 and ISO100. Assuming the sunny 16 rule is the correct exposure (1/100 f/16 and ISO100), then your shot is about two stops overexposed. My guess is that the auto-exposure mode was fooled because the main subject is back lit.


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Nov 19, 2011 00:29 |  #4

^^^^

Paul

Could you explain the sunny 16 rule?? I've never heard that before.

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s2kennyc
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Nov 19, 2011 00:46 |  #5

On a bright sunny day, the rule of thumb is that if you shoot at F16, then the shutter speed is 1/ISO chosen.

Example:
Aperture F16
ISO 100
Shutter Speed 1/100

or
Aperture F16
ISO 200
Shutter Speed 1/200

or
Aperture F16
ISO 400
Shutter Speed 1/400


Of course you don't have to use F16 at all, but this rule just makes it easy to remember. I hardly ever use F16.

Equivalent exposure would be:
Aperture F11
ISO 100
Shutter Speed 1/200


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Chappy
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Nov 19, 2011 06:35 |  #6

Thanks for the ideas.


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Wilt
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Nov 19, 2011 12:00 |  #7

The main area of interest of this photo seems to be the shadowed (backlit) front of the building, whereas the rest of the scene is in bright sun. Your camera metering was in 'Average' mode, and it averaged the entire frame -- but by exposing the shadow area of the scene as a mid-tone area (which every reflected light meter is designed to do...render what it sees as mid-tone) it overexposed the sunlit areas very badly.

The difficulty is founded within the scene itself, not the camera nor the lens, nor even the metering mode! As a photographer, it is up to you to decide where the importance in the scene needs to be placed, so that the viewer's eyes are drawn to the correct section of the scene. Here is an example of making the background brightness the most important (leaving the shadowed building underexposed)

IMAGE NOT FOUND
HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE


...as opposed to a 'compromise exposure' which renders the shadowed building with less density, but not rendering the background so bright as to be overexposed as the OP first photo posting.
IMAGE NOT FOUND
HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE



BTW, the Contrast control was not altered at all by me in making these examples, so that you can see that exposure was the fundamental issue causing apparently low contrast in the OP photo.

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Chappy
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Nov 21, 2011 20:54 |  #8

Do you think center weighted metering would have improved this shot? I won't use Matrix metering on a shot like this again.


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Wilt
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Nov 22, 2011 00:56 |  #9

Chappy wrote in post #13433326 (external link)
Do you think center weighted metering would have improved this shot? I won't use Matrix metering on a shot like this again.

Center weighted metering would have rendered the building to be about the
density of 18% gray, letting the background fall wherever it falls in brightness.

Partial metering would have rendered the building to be about the density of 18% gray, letting the background fall wherever it falls in brightness.

Spot metering would have rendered the building to be about the density of 18% gray, letting the background fall wherever it falls in brightness.


In all three cases, it is the photographer's judgement to use -EC in order to make the shadowed building darker than 18% tonality, making the background less overexposed.


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xarqi
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Nov 22, 2011 15:00 |  #10

Well - on a different tack, when I saw the image my first thought was that you were using a cheap filter that was killing the contrast, especially if sunlight is falling on the front element because no hood was used. Any of that apply?




  
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Wilt
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Nov 22, 2011 15:05 |  #11

xarqi wrote in post #13436796 (external link)
Well - on a different tack, when I saw the image my first thought was that you were using a cheap filter that was killing the contrast, especially if sunlight is falling on the front element because no hood was used. Any of that apply?

As my two examples showed, change of exposure with NO CHANGE of contrast setting resulted in very acceptable results. Had flare been at fault, the contrast of the image would have needed to be doctered, not merely exposure.


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Chappy
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Nov 22, 2011 15:41 |  #12

I had a Hoya 62mm Skylight filter on it, and no hood at the time.

Which kind of cheap filter kills contrast?


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Perfect_10
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Nov 22, 2011 15:54 |  #13

Chappy wrote in post #13436993 (external link)
I had a Hoya 62mm Skylight filter on it, and no hood at the time.

Which kind of cheap filter kills contrast?

A Hoya 62mm Skylight filter .... and no hood ;)


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Wilt
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Nov 22, 2011 16:09 |  #14

Chappy wrote in post #13436993 (external link)
I had a Hoya 62mm Skylight filter on it, and no hood at the time.
Which kind of cheap filter kills contrast?

Perfect_10 wrote in post #13437053 (external link)
A Hoya 62mm Skylight filter .... and no hood ;)

A Hoya Green Box or Blue Box 62mm Skylight filter and no hood kills contrast far, far worse than a Hoya HD or S-HMC 62mm Skylight filter and no hood!


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xarqi
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Nov 22, 2011 17:04 |  #15

Chappy wrote in post #13436993 (external link)
I had a Hoya 62mm Skylight filter on it, and no hood at the time.

Which kind of cheap filter kills contrast?

Well, notwithstanding the exposure aspect, it may be worth trying a similar shot without the filter and with a hood. There could be multiple factors at work here.




  
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Tamron 28-300 shoots weak
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