Old lens, new body (Vilobí del Penedès, 29/03/2019)

Yesterday the weather was fine and I went out to do some macro shooting. I usually use the Tamron 90 macro but this time I took a different approach by using the old (but great) Pentax M 50mm f4 macro.

This is all metal and glass and it is a completely manual lens so no autofocus and no aperture control from the body so the camera does not know at which aperture the lens will be shooting. That means that the camera cannot measure the light to tell you where is the exposure.

But Pentax has “the green button”. On manual lenses like this Pentax M, when you press the green button the camera instructs the lens to close the diaphragm, then it reads the light and sets the speed.

It seems a bit tricky but when one gets used to shoot in manual and meter the light using the central spot it is not so much: you set the light once and forget it until the light changes, just as you would do using any other lens.

Well, that’s what I got…

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