Perfect White Balance?
 

Hi there folks - what do you think of this gadget? Has anyone heard of it before?

http://photojojo.com/store/awesomene...ns-cap?src=DPS

Brilliant idea Andy thanks for the link, shame its so expensive though otherwise I would get one straight away its a great idea. I would think the high cost is more than likely is in the lens cap itself as they are not cheap to replace.

You have spoilt me now I can see I will be playing with bits of plastic to try to come up with something similar:D.

Stop it!....Behave yourself christine, and leave the tupperware alone!:D :p

You know full well Jacky and I are ebay surfers......So naturally, our far eastern friends have a cheaper alternative;

http://cgi.ebay.co.uk/67mm-White-Bal...1%7C240%3A1318


We've bought small items before from this seller. Factoring in about 2 weeks for delivery, but prices are good (available in all sorts of sizes)

Not sure if they still do them, but a few years ago a company called Omni (same folks who do the flash diffusers) were selling them here in the UK. Not sure if this helps, if people don't want to buy from abroad?

Ten minutes later and I have cut the bottom of a white milk bottle and placed it over the front of the lens, took a photo and made it into a custom white balance. It works.:D

Interesting Joe and Christine - but look at the difference of white area in both devices, Does anyone know if you need a large white area or will a small one do as in the lens cap?

Yes, I take your point Andy.
Looking through some more, the common consensous seems to be they recommend setting the white balance in 'tele-mode'.....I can see they maybe might have more use for WB readings for tele lenses, where the WB sensor on the prism might not be as accurate?
Your find has a more substantial invercone design, like the ones used on flash/light meters.

Will there be a whole host of WPF members now drilling out a hole in their lens caps for the tupperware to be stuck over?.......on your marks....... get set....... lol

I think if you use a lens cap with a small hole then it would have to be domed for maximum light. The flat one will work just as good because it covers the whole front lens element.

I would be tempted to save the money and make one at home - like Christine. Just make sure a few tests are done get the proper setting. All that has to be done is - to make sure the white is as pure a white as possible - like bond paper white.

Alternatively shoot in RAW and correct as necessary?

I think Expodisc were one of the first to supply a white balance aid.

http://www.expodisc.com/