Leica M4 Framelines

Hello, I just bought an M4 and as I was toying with the framelines I realized that it doesn't have the corresponding 135 corner lines that are concurrent with the 35mm frame. I know that there's a way to customize Leicas to omit certain lines but Im pretty sure that my M4 hasn't been augmented. Any ideas here? It's not a big deal but im just curious to see if this camera has been adjusted by a previous owner.

My M3 did not had 90mm framelines, but after pushing little harder frameline preview - lines showed up! And then also 90mm framelines were there when 90mm lens was mounted.

Take it as the blessing. Uncluttered 35mm flamelines is joy to use. And 135mm lens is next to useless on Leica, this is why 135mm Leica lenses are even cheaper than already cheap 90mm lenses.

Ko.Fe. said:

Take it as the blessing. Uncluttered 35mm flamelines is joy to use. And 135mm lens is next to useless on Leica, this is why 135mm Leica lenses are even cheaper than already cheap 90mm lenses.

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Absolutely. I have no plan whatsoever to use anything longer than a 50mm, just thought it was kinda interesting.