Red LED display

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Michael

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Dec 31, 2007
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Archived from groups: alt.comp.periphs.dcameras (More info?)

I have something that I'm trying to get a photo of and it has a small red
led display on it.

When I just take a normal set up photo with my D450Z it makes the display
blurry and slightly off color.

Everything is well lighted but was wondering....should I be using some sort
of filter? or?

If so, what color?

THANKS very much for any help.
 
Archived from groups: alt.comp.periphs.dcameras (More info?)

The blurred problem is that the camera is focused on the display face, not
the Leds inside. Manual focus may be your only answer if you cannot stop
down the lens to get a greater depth of field.

"Michael" <newszz10@yahoo.com> wrote in message
news:2q-dnRuRdNVuA2HfRVn-iQ@comcast.com...
> I have something that I'm trying to get a photo of and it has a small red
> led display on it.
>
> When I just take a normal set up photo with my D450Z it makes the display
> blurry and slightly off color.
>
> Everything is well lighted but was wondering....should I be using some
sort
> of filter? or?
>
> If so, what color?
>
> THANKS very much for any help.
>
>
 
Archived from groups: alt.comp.periphs.dcameras (More info?)

"Chuck" <chuckk2@cox.net> wrote in message
news:dN5Le.418$ct5.211@fed1read04...
> The blurred problem is that the camera is focused on the display face, not
> the Leds inside. Manual focus may be your only answer if you cannot stop
> down the lens to get a greater depth of field.
>
> "Michael" <newszz10@yahoo.com> wrote in message
> news:2q-dnRuRdNVuA2HfRVn-iQ@comcast.com...
>> I have something that I'm trying to get a photo of and it has a small red
>> led display on it.
>>
>> When I just take a normal set up photo with my D450Z it makes the display
>> blurry and slightly off color.
>>
>> Everything is well lighted but was wondering....should I be using some
> sort
>> of filter? or?
>>
>> If so, what color?
>>
>> THANKS very much for any help.
>>
>>
>

Or maybe you need to be in the Macro mode. If the object is small and you
are placing the camera very close.

See Page 82, 106, 110 and 202 of your Reference manual.
http://www.olympusamerica.com/files/D450_manual.pdf

--
CSM1
http://www.carlmcmillan.com
--
 
Archived from groups: alt.comp.periphs.dcameras (More info?)

Ok thanks....makes sense.....do you think I'd have a better photo also if I
kept dimming the leds until it looks right?

So a filter is of no benefit at all right?

I'd like the led's to be truer red also.



"CSM1" <nomoremail@nomail.com> wrote in message
news:GP7Le.536$A%3.530@newssvr33.news.prodigy.com...
> "Chuck" <chuckk2@cox.net> wrote in message
> news:dN5Le.418$ct5.211@fed1read04...
>> The blurred problem is that the camera is focused on the display face,
>> not
>> the Leds inside. Manual focus may be your only answer if you cannot stop
>> down the lens to get a greater depth of field.
>>
>> "Michael" <newszz10@yahoo.com> wrote in message
>> news:2q-dnRuRdNVuA2HfRVn-iQ@comcast.com...
>>> I have something that I'm trying to get a photo of and it has a small
>>> red
>>> led display on it.
>>>
>>> When I just take a normal set up photo with my D450Z it makes the
>>> display
>>> blurry and slightly off color.
>>>
>>> Everything is well lighted but was wondering....should I be using some
>> sort
>>> of filter? or?
>>>
>>> If so, what color?
>>>
>>> THANKS very much for any help.
>>>
>>>
>>
>
> Or maybe you need to be in the Macro mode. If the object is small and you
> are placing the camera very close.
>
> See Page 82, 106, 110 and 202 of your Reference manual.
> http://www.olympusamerica.com/files/D450_manual.pdf
>
> --
> CSM1
> http://www.carlmcmillan.com
> --
>
>
 
Archived from groups: alt.comp.periphs.dcameras (More info?)

In message <2q-dnRuRdNVuA2HfRVn-iQ@comcast.com>,
"Michael" <newszz10@yahoo.com> wrote:

>I have something that I'm trying to get a photo of and it has a small red
>led display on it.

>When I just take a normal set up photo with my D450Z it makes the display
>blurry and slightly off color.

>Everything is well lighted but was wondering....should I be using some sort
>of filter? or?

>If so, what color?

A green filter would cut the red light somewhat, but it will cut the red
component of the rest of the image, so it is impractical. Green is
generally the worst color filter to put on most digital cameras, as the
cameras are already too sensitive to green.

You have two options off the top of my head:

1) Get two exposures, from a tripod. One for the LED, and the other for
the rest of the image, with the LED covered by something to kill its
light, and blend them with layer masks.

2) Make the ambient light so strong that the LED is relatively darker.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><
 
Archived from groups: alt.comp.periphs.dcameras (More info?)

If you provide some extra light to balance the brightness of the LED, you
should be able to get a good exposure of the LED lit and the surrounding
components.

The trick is to light with a utility light and vary the distance of the
light from the object. If that camera has a manual shutter and aperture
setting, use that instead of Auto.

For the color balance, if you use a tungsten light (household bulb), set the
White Balance of the camera to Tungsten. Then the colors will be more
realistic.

--
CSM1
http://www.carlmcmillan.com
--
"Michael" <newszz10@yahoo.com> wrote in message
news:ZoidnQLTkd5dj2DfRVn-qg@comcast.com...
> Ok thanks....makes sense.....do you think I'd have a better photo also if
I
> kept dimming the leds until it looks right?
>
> So a filter is of no benefit at all right?
>
> I'd like the led's to be truer red also.
>
>
>
> "CSM1" <nomoremail@nomail.com> wrote in message
> news:GP7Le.536$A%3.530@newssvr33.news.prodigy.com...
> > "Chuck" <chuckk2@cox.net> wrote in message
> > news:dN5Le.418$ct5.211@fed1read04...
> >> The blurred problem is that the camera is focused on the display face,
> >> not
> >> the Leds inside. Manual focus may be your only answer if you cannot
stop
> >> down the lens to get a greater depth of field.
> >>
> >> "Michael" <newszz10@yahoo.com> wrote in message
> >> news:2q-dnRuRdNVuA2HfRVn-iQ@comcast.com...
> >>> I have something that I'm trying to get a photo of and it has a small
> >>> red
> >>> led display on it.
> >>>
> >>> When I just take a normal set up photo with my D450Z it makes the
> >>> display
> >>> blurry and slightly off color.
> >>>
> >>> Everything is well lighted but was wondering....should I be using some
> >> sort
> >>> of filter? or?
> >>>
> >>> If so, what color?
> >>>
> >>> THANKS very much for any help.
> >>>
> >>>
> >>
> >
> > Or maybe you need to be in the Macro mode. If the object is small and
you
> > are placing the camera very close.
> >
> > See Page 82, 106, 110 and 202 of your Reference manual.
> > http://www.olympusamerica.com/files/D450_manual.pdf
> >
> > --
> > CSM1
> > http://www.carlmcmillan.com
> > --
> >
> >
>
>
 
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