White Balance Lens Cap

Who uses one and how do you like it and what brand?

Mennon WB cap for cheap, and it does the job pretty well.

However, sometimes it can be a very little bit warm.

When you say white balance lens cap youre referring to something like an ExpoDisc right? Just for attempting to properly set white balance? If thats all youre looking to do I'd suggest depending on your subject using a grey card instead. If your shooting something where a grey card simply cant be used like landscapes or something, just shoot raw and fix it later in post processing.

Caps = Overpriced gimmicks

Try using a coffee filter. Put your lens on manual focus, aperture priority, cover your lens with the filter, aim it at the light source, and there it is- your source image for CWB.

ben_r_ wrote in post #6634176
When you say white balance lens cap youre referring to something like an ExpoDisc right? Just for attempting to properly set white balance? If thats all youre looking to do I'd suggest depending on your subject using a grey card instead. If your shooting something where a grey card simply cant be used like landscapes or something, just shoot raw and fix it later in post processing.

I always shoot raw. But I have found that using a white sheet of paper works good also. I did a test where I shot using the same aperature and SS using the same studio lighting. I used a grey card,white sheet of paper, and auto white ballance. When editing I would just correct with the auto adjust white balance to see how much change in the histogram occured and the white sheet of paper was the best. The histogram only moved minimally as where the grey card was next and the auto white balance was the worst. I try to expose the best I can to reduce post procesing. I feel that the best pics are the ones that were exposed properly rather than manipulated. That's why I was wondering if anyone had used an ExpoDisc or similar to set white balance.

I use a WhiBal. (http://www.rawworkflow​.com/whibal/). I think the main thing for me is that it is supposed to be spectrally balanced and remains consistent. It's also sturdy and easily stowed away.

I use an Expo Disc, particularly when shooting indoors with tungsten lights or in a mixed lighting situation. It works great -- somebody should get a Nobel Prize for inventing this thing. The Expodisc is helpful because it integrates light sources from all angles, just like an incident light meter. Slight variations of angle won't affect the color balance as it will with a card.

going to check out the whibal, expos seem pretty expensive

Any neutral translucent plastic over the lens will do the same thing. When the expodisc was first introduced the popular alternative was a lid from a pringles tube. They have sense went with a clear plastic but I think you get the idea. I think Crisco shortning lids could probably be used.

I have a WhiBal card, and maybe I'm missing something, but I wouldn't bother to replace it if it vaporized. I shoot mostly in a controlled studio setting, and when I sample different areas of the card (same shot,) I get a range of different readings. Not exactly what I was hoping for from a 40 dollar piece of plastic.

seanv wrote in post #6647885
I have a WhiBal card, and maybe I'm missing something, but I wouldn't bother to replace it if it vaporized. I shoot mostly in a controlled studio setting, and when I sample different areas of the card (same shot,) I get a range of different readings. Not exactly what I was hoping for from a 40 dollar piece of plastic.

Are you sure you placing it correctly, like so the light hits it evenly? I mean I'm certainly not implying your not smart enough, but I've owned a total of 5 WhiBal cards & have never had a problem with anything, especially difference from spot-to-spot on a single card & from what I hear they do have fairly strict quality control in factory, trashing batches that are a certain percentage of difference from card to card. Is it a name brand WhiBal card? Do you maybe carry it in your pocket or out of it's little case in your bag (I know the color goes all the way through but if there is a deep enough gouge it could make a shadow I suppose)?
Of course I believe you, I don't mean to sound like that, I'd just like to figure out why your having that problem, know what I mean?

MagikTrik wrote in post #6674596
Are you sure you placing it correctly, like so the light hits it evenly? I mean I'm certainly not implying your not smart enough, but I've owned a total of 5 WhiBal cards & have never had a problem with anything, especially difference from spot-to-spot on a single card & from what I hear they do have fairly strict quality control in factory, trashing batches that are a certain percentage of difference from card to card.

I agree. As long as the angle is correct, I've never had a problem with mine.

i use the expodisc on occaision and its pretty good. It helps me the best in overcast days.

Yes, old thread, I know, but that's what the Search Engine spit out first, sooo...

I recently saw a shot of a Photojojo White Balance Lens cap from a member and I have to say I like the idea. However, at $65 plus [Int'l] shipping, I'd like to hear a first-hand account from member(s) who use it, please... .

I also saw the filter types but I'd just assume not have to screw on anything as I want to be able to change my filters unhindered. I'm also not a big fan of the Pringles-lid solutions... (who's to say they are truly neutral?)

Here is a survey/review of available on lens white balance products.

http://www.ppmag.com …arison-white-balan-1.html

Cupcake liners work pretty well, and they are the right price!
Mike K