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The Sunbury 4.5-inch footage makes me wonder if those cameras had gamma correction circuits.
That would allow pictures "below the knee" to be normal brightness and gray scale. The earlier B&W cameras required a judgement on the iris setting to compromise between over-all too dark pictures, or pasty over-the-knee highlights. This also explains why the high-knee tubes were not retrofitted to B&W cameras - no gamma correction to make the linear operation useful - pictures would look too dark.
I agree, the WRC pix are much better than those of the Queen, and also note that the subject matter is less critical and is under more uniform lighting.
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