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> why put that in every single lens There are valid engineering reasons for this. Sensor shift is hard, especially for full-frame cameras. The sensor has to b
by jiggawatts 3y ago
> why put that in every single lens
There are valid engineering reasons for this.
Sensor shift is hard, especially for full-frame cameras. The sensor has to be moved very fast, which means it has to be light, which means it can't have a heat sink attached, which means it can easily overheat.
For telephoto lenses, the shift required in the sensor would be huge, up to a cm or so, whereas a tiny shift in a small lens can slew the image by more than that.
- sanitycheck 3y agoWell... For a very long lens that's true - but then just buy a long lens with OS and turn off the sensor shift. Best of both worlds, all your other lenses can be smaller/lighter and still benefit from an extra stop or two of hand-held stability. I've never acquired a very long lens because I know in my heart that I'll never want to carry it around. I have, OTOH, appreciated the extra stabilisation on M lenses from the 80s! Really good point about heat, and one I didn't even consider because I don't care about video even slightly! I guess Pentax users are a small self-selecting market.