Ailing white-flowered camellia in Riverside County

My uncle gave me a lovely 12-year-old camellia with white flowers about two months ago. It is planted on the North side of the house where it gets bright shade for the entire day, until very late afternoon when it gets apprx. 1-2 hours of sun. We have terrible clay soil, so we added Amend to the planter in January when we first moved in (though it's still a lot more clayey than I would like).

It started off in a pot on the porch where it would get watered deeply twice a week, but starting looking a bit yellowy on some leaves, and some had brown centers. I thought perhaps it was not getting enough water, so I placed it in the planter where it would get watered more regularly. It has been looking more and more yellow/brown as the weeks go by, though it does not seem to be losing leaves.

I have fed it once with camellia food, a few weeks ago.

Looking at the state of the leaves, can anyone tell me whether I am watering too much, too little, if it's getting too much sun, or could it be disease? Would it help to put it back in a pot, or just stress it? He gave us another potted pink-flowered camellia that is on the west side of the house and gets apprx. 1-2 hours morning sun, and it is doing beautifully, but I'm worried I'll kill the white one by moving it needlessly.

I very much appreciate any help. Even if it is just to tell me there is a more appropriate place for this topic--I didn't see a forum for camellias. :)

Here is a close-up of the leaves.

Could the leaves be getting sunburned by the late afternoon sun? Around here I mostly see camellias being grown in places where they get morning sun but not usually PM sun. Or even if it could normally handle that amount of sun in your area, if it had been in a shadier location at your uncle's house then suddenly putting it somewhere that it was getting more sun than it's used to can cause sunburned leaves too.

Looks like sunburn to me too. Camellias aren't really fond of afternoon sun unless they are a sasanqua camellia and yours is most certainly a japonica. And everything else that ecrane said. :-)

Thank you for the swift responses! I think it was in complete shade where it lived before. Should I dig it out of the ground and move it to where it might be happier, or will it eventually 'get used' to the amount of sun it's getting? I don't have a problem moving it, I am just afraid to stress it. I'm sorry if the answer is obvious, but this is my first garden so I'm a bit behind the curve. :)

I think that you should move it. Camellias transplant very well.

I agree, I think it'll be happier if you can keep it out of the afternoon sun. Sounds like the other one you have is happy, is there room in the bed that it's in?

Well I learned a lot. Now I know where to plant mine. They've been hiding under the banana in the gh, but it will soon be too hot in there for them. Not the best photo, but you get the idea.
Thanks for asking the question Grey_Sterling. Thanks to all the rest of you for your knowledge and advise.
WIB,
SW

Those are beautiful camellias SW. I'm glad that you have a good place for them.

Those look like gardenias SW. Super sweet fragrance?

Nice fragrance, I'll go read the tag. My brain wiring is probably crossed again. Another photo of it.
WIB!
SW

Yep, yummy gardenia, I can almost smell it from here! My Mom has a big one in a pot and floats blooms in a glass bowl inside, just lovely.

Okay, so should I plant them where they get morning sun, and afternoon shade? They'll end up frying in the gh if I leave them in there. They do have a lovely fragrance. Gardenia's, good thing y'all take care of me.
Thanks Sue. Saved me a walk.
WIB!
SW

I've never had luck with gardenias in afternoon sun. OK, technically I've never had much luck with them at all, but I've definitely kept them alive longer when I'd had them somewhere that was shaded in the afternoon!

My Mom has hers in a large pot with just a bit of filtered morning sun.

ecrane3, the other camellia is just in a large pot. Unfortunately the last occupants cemented in the side yard on our West, but it is such a narrow space that it gets shaded for most of the day. Hopefully the white camellia will like it better over there, and the heat wave and all the moving around doesn't bother it too much. :) Thanks again, everyone, for the responses!

I'd say gardenia for sure, chlorotic. Needs iron and nitrogen and trace minerals. Sunscald too.