MF doesn't have anything to do with the actual item level of the item that drops, it simply increases the chance of said item to be of magic quality or better.
This.
If a level 51-59 item drops, that item was going to drop regardless of your MF. MF only comes to play when rolling the dice as to whether an item dropping comes up white or not.
Whenever a ladder was still kind of fresh and a white lacquered plate dropped, I would curse my low MF.
It's likely working as intended. I'd say you've hit a streak of bad luck.
Considering that increasing the chance of getting blues and rares will also give you more of the crap items.
Imagine this example.
0% Magic Find
- 10 blues and/or rares with one good in them. So 9 crappy ones.
100% Magic Find
- 20 blues and/or rares with two good in them. So 18 crappy ones.
200% Magic Find
- 30 blues and/or rares with three good in them. So 27 crappy ones.
Bigger magic find will give you more crappy ones, but also more good ones.
You still get 9 crappy ones for every good item.
In any case, luck has a very large influence on this one.
NOTE!
The numbers are imaginary. Still, this is much how Magic Find works.
That's not quite how mf works. MF doesn't increase the amount of items that drop in any way, it merely causes a higher percentage of equipment drops to be of higher quality. High mf causes all items to have a greater chance of being rolled as higher quality. Thus with a high mf, your ratio of magic-quality and above drops compared to white and below drops will increase. Eventually at some unknown and unreachable mf level, it would be possible to totally force lower quality drops off a loot table. If the lowest drop rate for a magic item in-game was say, 10%, then a mf of 1000% would render every equipment drop as a magic item minimally. This does not mean that all of your drops will be good, or have better stats, however. MF only influences whether a piece is white, magic, rare, etc and not the stats, item level, or any other item statistic.
For instance, let's say you open a standard chest while playing. The chest drops 100g, 2 crafting tomes, and 1 gem. Even if you had switched to a high mf set before opening this chest, the results would not have changed since mf only affects equipment drops. Now, if the chest had contained 1 white-quality spear, having a high mf would have resulted in that spear having a greater chance of having been rolled as a magic, rare, set, or legendary item in proportion to the amount of mf you have equipped. If the hidden probability of this given spear being magic was 20% then having the highest mf possible in the game (342) would mean 68.4% of the time that spear will at least be blue.
Hope that helps people understand mf a little better, and I hope none of the workings of mf have changed since I last researched it.
Hesp, your explanation is pretty much spot on, as I understand it. The devs even confirmed MF still works exactly the same way in D3 as it did in D2, also reaffirming the statement that it takes a predetermined loot table and increases the chance of rolling a higher quality (magic+) version of any or all of those items.
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is it really working as intended?
If a level 51-59 item drops, that item was going to drop regardless of your MF. MF only comes to play when rolling the dice as to whether an item dropping comes up white or not.
Whenever a ladder was still kind of fresh and a white lacquered plate dropped, I would curse my low MF.
That's not quite how mf works. MF doesn't increase the amount of items that drop in any way, it merely causes a higher percentage of equipment drops to be of higher quality. High mf causes all items to have a greater chance of being rolled as higher quality. Thus with a high mf, your ratio of magic-quality and above drops compared to white and below drops will increase. Eventually at some unknown and unreachable mf level, it would be possible to totally force lower quality drops off a loot table. If the lowest drop rate for a magic item in-game was say, 10%, then a mf of 1000% would render every equipment drop as a magic item minimally. This does not mean that all of your drops will be good, or have better stats, however. MF only influences whether a piece is white, magic, rare, etc and not the stats, item level, or any other item statistic.
For instance, let's say you open a standard chest while playing. The chest drops 100g, 2 crafting tomes, and 1 gem. Even if you had switched to a high mf set before opening this chest, the results would not have changed since mf only affects equipment drops. Now, if the chest had contained 1 white-quality spear, having a high mf would have resulted in that spear having a greater chance of having been rolled as a magic, rare, set, or legendary item in proportion to the amount of mf you have equipped. If the hidden probability of this given spear being magic was 20% then having the highest mf possible in the game (342) would mean 68.4% of the time that spear will at least be blue.
Hope that helps people understand mf a little better, and I hope none of the workings of mf have changed since I last researched it.