Archived from groups: rec.photo.digital (
More info?)
Hunt wrote:
> In article <rBGtd.33035$CG4.15662@fe2.columbus.rr.com>,
> sligojoe_Spamno@hotmail.com says...
>>
>> ross wrote:
>>> I am shooting photos in a gymnasium and I typically get a yellow or
>>> gold cast to everything. Any suggestions about how to get a better
>>> picture or perhaps improving the pic with Photoshop? I appreciate
>>> this newsgroup. Dick Ross
>>
>> This can be a tough one. Each gym can be different.
>>
>> I would suggest you start by checking your camera manual and look
>> at the white balance features. See if you can get somewhere there.
>> Some cameras offer little and some offer a great deal of control.
>>
>> A second approach is the use of a filter. Before you can chose a
>> filter, you need to know what kind of lights are used. You will
>> generally find one of three.
>>
>> * Incandescent lights are like your standard home light bulbs,
>> They come in several flavors (color temperatures) but they are easy
>> to adjust or filter for.
>>
>> * Fluorescencet lamps are not quite as good, but you can usually
>> got good results with the white balance adjustment and or filters.
>> They also come in several flavors.
>>
>> * Finally you have a group of gas discharge lamps. These are the
>> most common in gyms. They also come in a number of flavors. Some
>> are very difficult to correct and some not too bad.
>>
>> + The mercury types are much like the typical bluish looking
>> freeway lights. This is the most common. Not too bad when adjusted
>> properly.
>>
>> + The sodium types (high pressure and low pressure) are also
>> used on freeways. One appears a yellowish orange and the other very
>> orange. You are most likely to see the first in a gym. They are
>> difficult to correct for, but if you filter and or white balance
>> well, you should not be too far off. The problem is they have large
>> parts of the spectrum missing. So colors to you, to film and to
>> sensors look odd, even when adjusted. You can't totally fix this
>> one. This is also the one you are likely talking about. You can
>> try a filter made for sodium (high pressure) or try white balance
>> changes and I believe you will get a lot of improvement. It should
>> be OK for the work you are doing, but it would not be good for
>> portrait work.
>>
>> Good Luck
>>
>> --
>> Joseph Meehan (not the photo-lighting author)
>
> Joseph, you are right-on in the above observations and
> recommendations. Also, many gyms have banks of "skylights" either
> high on the wall, or even in the ceiling. If it light outside, you
> have high K temp skylight to deal with also. I've found that the best
> is to do as you say, set overall White Balance, shoot RAW, and work a
> bit more on the exact correction, then use Masks, and Adjustment
> Layers in PS for those areas where you cannot dial it in, or in the
> areas where you have the incomplete-spectrum vapor lights. In my
> case, I'm shooting architectural, and not sports in these places, so
> it's easier to make minute adjustments for the interior, than if one
> is trying to shoot the actual activities.
>
> Hunt
I agree and this is one of the few times I would bother with RAW.
--
Joseph Meehan
26 + 6 = 1 It's Irish Math