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 Gibson Jack Plate Explorer Chrome Metal Cord Input Output Guitar Parts Jackplate US $11.99 
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 1960'S 1970'S VINTAGE FENDER STRATOCASTER GUITAR INPUT/OUTPUT JACK USA US $9.99
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 10-PACK GUITAR PARTS,MONO INPUT OUTPUT JACK ,1/4" US $9.59
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 10 x 1/4" Guitar Input-Output Stereo/Mono Cylinder Jack US $21.59
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 Set of Black Acoustic Guitar Input Output Jack Strap Button Guitar Parts US $4.98
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 Curved Square Style Plate Guitar Bass 1/4 Output Input Jack For LP/SG/Telecaster US $.99
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 1962-1969 VINTAGE FENDER STRATOCASTER GUITAR INPUT/OUTPUT JACK USA US $225.00
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 Black Stratocaster Boat-Style Plate Electric Guitar 1/4 Input Output Jack US $.99
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 Accutronics 4FB3D1B 2-Spring Reverb Tank 1475 Ohm Input 2250 Ohm Output US $30.00
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 Black Guitar Input output Jack Flush Mount 1/4" Parts US $4.64
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 Acoustic Guitar Input Output Jack Strap Button Gold US $4.92
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 10 x Electric Guitar Input Output Jack Socket Switchcraft US $4.74
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 Guitar Input Output Jack Flush Mount Chrome 1/4" Parts US $2.84
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 New 1 PCS Guitar Input output Jack Flush Mount Gold 1/4" Parts #lp92930 US $6.99
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 New 10 PCS Guitar Input output Jack Flush Mount Gold 1/4" Parts #lp92931 US $49.00
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 Genuine Belcat Guitar Amp Switch Box ROHS Active A-B BOX ABS-521 1input, 2output US $42.99
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 Genuine Belcat Guitar Amp Switch Box ROHS Active A-B BOX ABS-522 2input, 1output US $42.99
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 For LP/SG/Telecast Curved Square Chrome Plate Guitar Bass 1/4 Output Input Jack US $3.66
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 Stratocaster Boat-Style Plate Electric Guitar 1/4 Input Output Jack Black US $3.99
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 Gibson Jack Plate Gold Cord Input / Output Guitar Parts Les Paul SG V Explorer US $14.99
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 Gibson Jack Plate Nickel Cord Input / Output Guitar Parts Les Paul V SG Explorer US $12.99
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 Gibson Jack Plate Black Cord Input / Output Guitar Parts Les Paul V SG Explorer US $8.99
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 Gibson Jack Plate Creme Cord Input / Output Guitar Parts Les Paul V SG Explorer US $8.99
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 Gibson Historic Jack Plate Creme Cord Input / Output Guitar Parts Les Paul R8 R9 US $28.99
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 Dunlop Crybaby Wah 1/4" input or output jack US $4.25
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 GD Input-Output Jack Flush Mount 1/4" Ibanez RG/JEM/JS US $9.99
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 6pcs Metal Black and silver Input Output Jack Socket for Electric Guitar 1/4" US $5.25
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 One Genuine Fender Gold Plated Hex Nut For Input Output Jack 0018824000 US $4.98
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 ACOUSTIC GUITAR INPUT OUTPUT JACK ATTACHED STRAP BUTTON 18K GOLD PLATED NEW US $5.99
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 1x 1/4" Guitar Input-Output Stereo/Mono Cylinder Jack US $5.90
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 Korg Input/Output Chromatic Tuner For Guitar or Bass (CA-40) * Korg USA Dealer US $19.99
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 Guitar BASS 1/4 Output Input Jack Plate Socket Rear Mouting Suits Gibson Chrome US $2.99
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 10x Audo Stereo Headphone 6.5 Output / Mic Input Jacks US $5.99
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 GUITAR INPUT OUTPUT JACK FLUSH MOUNT GOLD 1/4" PARTS CYLINDER BARREL I/O US $4.67
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 Square Input Output Guitar Jack Plate Chrome Metal New US $1.97
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 INPUT OUTPUT JACK PLATE for Fender Stratocaster ** Custom Relic ** US $4.99
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 6 Quality Metal Electric Guitar Input Output Jack Socket Blk Silver Switchcraft US $3.48
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 Guitar Input output Jack Flush Mount Gold 1/4" Parts US $4.98
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 ACOUSTIC GUITAR INPUT/OUTPUT JACK BLACK ATTACHED STRAP BUTTON NEW!!! US $3.99
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 Dual Guitar Jack Plate Input Output 18K Gold Plated New US $3.99
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 2PCS,Electric Guitar Socket Switchcraft 1/4" Input Output Jack Guitar parts,2529 US $2.99
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 2PCS,MONO Input Output Jack Socket Switchcraft 1/4"jack for Electric Guit,2635 US $2.68
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 2PCS,stereo Input Output Jack Socket Switchcraft 1/4"jack for Electric Guit,2529 US $2.99
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 Ibanez Combination Input/Output Jack fits "10" Series & Master L Pedals TS10 STL US $5.00
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 Genuine FENDER Stratocaster INPUT OUTPUT Jack 2011 USA SOCKET STRAT Guitar NEW US $16.63
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 NEW! Switchcraft Mono 1/4" LONG THREADED INPUT/OUTPUT JACK - Fender/Gibson US $6.99
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 2PCS,MONO Input Output Jack Socket Switchcraft 1/4"jack for Electric Guit,3935 US $2.68
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 2PCS,Electric Guitar Socket Switchcraft 1/4" Input Output Jack Guitar parts,3935 US $2.68
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 Genuine Fender Switchcraft Tele Guitar 1/4" Input Output Jack 0021956049 NEW US $6.32
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 Genuine Fender Switchcraft Mustang Guitar 1/4" Input Output Jack 0021956049 NEW US $6.32
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 Black Metal Guitar Jack Plate Round Circular Input Output new! US $1.97
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 Dual Guitar Jack Plate Input Output Black w/Screws New US $3.97
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 Square Input Output Guitar Jack Plate Black Metal New US $1.97
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 50 pcs silver Input Output Jack Socket Switchcraft 1/4"jack for Electric Guitar US $32.39
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 100 pcs silver Input Output Jack Socket Switchcraft 1/4"jack for Electric Guitar US $53.99
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 New 1 Pcs Gold Acoustic Guitar Input Output Jack Strap Button Guitar Parts US $5.99
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 10 Pcs Gold Acoustic Guitar Input Output Jack Strap Button Guitar Parts US $29.00
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 10 Pcs Black Acoustic Guitar Input Output Jack Strap Button Guitar Parts US $27.00
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 50 X Electric Guitar Socket Switchcraft 1/4" Input Output Jack Guitar parts US $23.74
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 100pcs silver Input Output Jack Socket Switchcraft 1/4"jack for Electric Guitar US $49.99
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 100x Audo Stereo Headphone 6.5 Output / Mic Input Jacks US $24.99
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 100x Audo Stereo Headphone Output / Mic Input Jacks US $29.99
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 Dual Guitar Jack Plate Input Output Chrome w/Screws New US $3.47
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 For LP/SG/Telecast Curved Square Black Plate Guitar Bass 1/4 Output Input Jack US $3.66
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 Genuine Fender Switchcraft Guitar & Bass 1/4" Input Output Jack 0021956049 NEW US $4.77
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 Square Input Output Guitar Jack Plate Gold Metal New US $2.47
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 BOSS Rocker Wah PW-1 Effect Pedal ON/OFF Input Output Range Low Medium High US $55.00
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 Black Guitar Input output Jack Flush Mount 1/4" Parts US $4.98
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 Guitar Input output Jack Flush Mount Gold 1/4" Parts US $4.98
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Input Output
Photoshop For Beginners - Understanding Levels And Curves Input Values
Levels and Curves Input Values
When you set the INPUT value in the Levels or Curves dialog either by dragging the black or white triangular sliders or typing a value directly into the Input box, you are telling Photoshop to change all of the pixels in the image that have this new tone value so that they match the default OUTPUT value.
For example, when you move the white slider in the Curves dialog to 250, you are basically saying "I want all the pixels with the value 250 AND HIGHER (i.e. the range 250 to 255) to have the same value as shown in the OUTPUT box".
Since the default OUTPUT value is 255 for white, all of the pixels in the image with a value of 250 or higher will be made to be pure white (value 255). The other light tones in the image will also become lighter.
The same is true for the black slider. When you move the black slider you set the INPUT value which will change all of the pixels with this value AND LOWER equal to the default OUTPUT value which is 0 (i.e. black). For example, if you move the black slider or set the black INPUT value to 25, all of the pixels with a value of 25 or lower will be made equal to the output value of 0 (black). This will also cause all of the shadow tones also to darken.
You are actually setting the upper and lower limit values of the white and black tones in the image which in this example would increase the overall contrast of the image.
So, if you have a low contrast image that hasn't got a black tone and hasn't got a white tone, you would normally be saying "OK, the darkest tone in this image has, say, a value of 20 BUT this is not true black and I want it to be black. Right, so I need to set the INPUT value of the black slider to 20 and leave the OUTPUT value at 0."
This will change the value of the selected tone from 20 to 0 thus increasing the depth of the shadow tones. Note that all the tones in the dark areas will be lowered in value proportionally. You now have either a Levels or Curves tone adjustment that has 'mapped' the value of 20 down to 0.
Working with the lighter tones now, let's say the lightest tone in this same image has a value of 230 (a light grey tone, typical of low contrast photos). Now let's assume we want the image to have a pure white. So, we need to change the value of this tone from 230 so that it looks white (value 255). Using the Levels or Curves adjustment dialog we move the white slider until the INPUT value is 230 and leave the OUTPUT value at the default of 255. This will change all the tones with a value of 230 so they have the new value of 0 (zero) which will change them to become white in the image.
The result of these two changes to the black and white input values will be that you have increased the image contrast to make it fill the full tonal range and appear more 'normal'.
Now you understand how the Input values in the Levels and Curves dialogs work and how to use them to correct a low contrast photograph.
About the Author
Now you can learn all of the skills needed for your photo editing at Zone2Tone and you will also receive a free professional quality video tutorial.
Copyright (c) Les Meehan 2010.
Les Meehan is the author of seven published Photoshop books and is a qualified instructor who has been teaching workshops for over 20 years.
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