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iPhone 13 Pro with Waterproof Housing, vs TG6?

Started Jan 24, 2022 | Discussions thread
SafariBob
SafariBob Veteran Member • Posts: 3,858
Re: iPhone 13 Pro with Waterproof Housing, vs TG6?

kelpdiver wrote:

SafariBob wrote:

Compare the width of the pinhole lenses in the 13 pro to the compacts - it's a fraction of the size. That forces the fixed focal length, but can't get past the limitations of that size.

Also, while the wide angle camera of the 13 pro pairs with a larger 44mm sensor (versus the TG6's 28mm, that 6x lens has to be paired with a 12mm sensor to get that effective focal length.

the iPhone has a wider aperture, as far as I can tell at all focal lengths. To the extent where it’s gathering more light throughout even taking sensor size into account, as far as I can tell.

You have to be more specific with that statement. A lens that is 2mm wide cannot collect as many photons as a lens that is 12 or 20 mm wide (I don't have a TG, so I can't estimate how wide it is).

yes, diameter of outermost lens determines how much light for a given sensor.

There's also a long running problem with figuring out what f1.7 actually means - actual vs 35mm equilivancy.

You multiply by crop factor.

it’s fairly easy to see that given the f stops of the various iPhone lenses they gather more light than the tg, as far as i can tell

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