![]() A lens has a certain resolution in a certain set of conditions (aperture and subject distance are critical) so to that extent you can say its resolution is absolute. ![]() If it's a yes I have another much more technical and somewhat obscure question to those that are technically/engineering inclined regarding "absolute" versus "relative" resolution.Īgain, this depends on what you actually mean. This is why you can get more detail in a picture of a tall building if you fill the frame height when shooting portrait (as stated in another reply). ![]() By this definition resolution will be higher in portrait orientation because "height" is greater when the sensor is turned vertically. Today resolution is also measured by lines-per-picture-height, which can be useful when comparing resolution between different sensor formats. Lines/mm caused no confusion when film formats were mostly 35mm or medium format. With a regular array of pixels resolution diagonally can be different but horizontal and vertical are the same. By that definition resolution of a lens is the same in any direction - vertical, horizontal or vertical. Traditionally resolution has been measured in lines-per-millimetre (or inch), by which it means the maximum number of alternating black and white lines that can be distinguished before merging into grey. It depends on what you mean - or how you define resolution. I see you immediately realized where I am going with the "relative" resolution as far as packing pixels into the object, wow, great intuition. If they rectangular than the resolution could be different between the long and short axis of the rectangle. The opposite is true if you are shooting something wide and not very tall like a sofa.Īre the pixels square or are they rectangular. If you just fitted the skyscraper in vertically in both a portrait and a landscape orientation, the actual skyscraper would have a higher resolution in the portrait orientation because there would be less wasted space down the sides. That would be true if you were photographing something tall and thin like a sky scraper. I read somewhere the following line "highest resolution is obtained in landscape in preference to the portrait orientation". There will be the same number of pixels in both images. Is there a difference in resolution between Landscape and Portrait orientations?
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