I too like the longer telephotos; like 105mm to 300mm.
But I'll mention that the size of the sensor, or film, does not change the characteristics of the lens. A 100mm lens will project the exact same image no matter if the image is hitting a 35mm film or a 1.5x sensor. The lens doesn't know what it is projecting onto and hence always makes the same image. But the sensor, or film size, does impact the cropping of that image, so a 1.5x sensor will crop to a smaller portion of the image.
People get confused and think that a 100mm lens will behave like a 150mm lens when shot with a 1.5x sensor, but that just isn't the case. It'll behave exactly like a 100mm lens with just a smaller portion of the image cropped to. The depth of field, bokeh, sharpness, contrast, etc will be the same with a given lens no matter what the sensor is.
PTL,
Lee
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