I used a very super telephoto lens (1300mm) on a cropped sensor (Nikon D300) to get the model inside the sun. the model was about 150-200 meteres away from me over a high rock. I used levels to reduce the flare as the sun was still strong.

I cropped the photo from left and right only to get the proper composition...

The sun is white because it was overexposed although I used the maximum shutter speed and the smallest aperture on the lens.

I will try it again with lower sun when the sun light is weaker to get the yellow tones. With the cropped sensor of D300 (which I borrowed from my friend Murtadha Al-Homood) helped to narrow down the field of view to an equivalent of 1300X1.5 = 1900mm.

the lens used (Phoenix 650-1300mm) is very cheap and has low quality but works for this purpose. The f-number which was f/16 is not recorded in the EXIF because the lens has no CPU or any contacts to transfer lens info.