And interestingly, it doesn't matter whether you're shooting uphill or downhill. The point of impact is always HIGHER with an uphill/dowhill shot, than the lasered distance would make you think you should hit, compared to a horizontal shot of the same lasered distance. So you have to estimate holdUNDER instead of holdover with an uphill/downhill shot. Actually you have to estimated holdunder, the take the difference between the holdunder and the appropriate holdover for the straight lasered range. Might be a net holdunder, or might be a net holdover, depending upon circumstances.
Some people think you aim lower on a downhill shot, but higher on an uphill shot, but that is not the case. Always aim lower than otherwise.
This can become very important with shots over 20 yards with a bow/arrow, from a treestand, particularly if you're way up there, 15 feet or higher.