This is pre-mature as we haven't seen photos from the new 100-400L, but the presumption is that the image quality will be outstanding as many of the new offerings from Canon have been recently. With the presumption that the image quality for the new 100-400mm mkii will be superior to both the mki version and the 70-300mm L, so much so that present owners of the aforementioned lenses opt to sell their zooms to defray the cost of the purchase of the mkii.
I foresee an initial flooding of the market which will drive down prices, and after a few months, the price should rise and plateau into its "new" used price.
For historical used pricing, I'm considering the used data from camel camel camel which holds an rudimentary archive of lowest used prices. This doesn't provide data regarding the condition of the lens in question nor does it consider the reputation and reliability of the seller.
70-300mm L
First... new pricing without consideration of discounts, negotiations, or rebates. September we saw a price drop in the minimum advertised pricing for the 70-300L. The price went from $1600 to $1450 (USD). With consideration of a regression line/curve, the used price was around $1290 to $1180 prior to the price drop. After the price drop there was a small market correction and the price $1150 to $1040. Considering the time from September 1st through the present, the price for the lens is around $1080. (The frequent drop in price down to $890 is ignored because that is a scammer posting on Amazon).
So with the 100-400 mkii's release, we should see the 70-300L's price further depressed... I'm estimating down to $950 with a standard deviation of $50... so as low as $900 for a very good condition lens. The price should rebound shortly thereafter to around $1000.
100-400mm L (mki or classic or whatever yall want to call the original)
Secondly... new pricing without consideration of discounts, negotiations, or rebates. The price has been $1550 to $1700... but that's not really a fair picture considering there has been a rebate avialable for the lens more than there hasn't been. So the new price after rebate is roughly $1300. There is a good deal of recent fraudulent postings with the 100-400mm... so I'm going to just cut to the chase and estimate that the used selling price has been roughly $1250 to $1030 with a recent recent price drop in the last two weeks as the rumors of the mkii version became to pick up steam.
So with the 100-400 mkii's release, we should see the 100-300L's price further depressed, though it seems to have already begun... This may sound like a broken record, but I'm estimating down to $900, but I see a greater deviation... I can see $800 consistently being the asking price and being quickly snatched up. Used prices will plateau around $950...
This is all conjecture... and I'm not really in the market for either lens. i wouldn't mind finding out that I'm wrong about the 70-300 and the price goes even lower (at which point maybe I'm in the market for the lens). It's also possible I'm entirely wrong... the release of the 24-70mm f/2.8L mkii went up in price for a used lens... so future telling is still a mystery.
I foresee an initial flooding of the market which will drive down prices, and after a few months, the price should rise and plateau into its "new" used price.
For historical used pricing, I'm considering the used data from camel camel camel which holds an rudimentary archive of lowest used prices. This doesn't provide data regarding the condition of the lens in question nor does it consider the reputation and reliability of the seller.
70-300mm L
First... new pricing without consideration of discounts, negotiations, or rebates. September we saw a price drop in the minimum advertised pricing for the 70-300L. The price went from $1600 to $1450 (USD). With consideration of a regression line/curve, the used price was around $1290 to $1180 prior to the price drop. After the price drop there was a small market correction and the price $1150 to $1040. Considering the time from September 1st through the present, the price for the lens is around $1080. (The frequent drop in price down to $890 is ignored because that is a scammer posting on Amazon).
So with the 100-400 mkii's release, we should see the 70-300L's price further depressed... I'm estimating down to $950 with a standard deviation of $50... so as low as $900 for a very good condition lens. The price should rebound shortly thereafter to around $1000.
100-400mm L (mki or classic or whatever yall want to call the original)
Secondly... new pricing without consideration of discounts, negotiations, or rebates. The price has been $1550 to $1700... but that's not really a fair picture considering there has been a rebate avialable for the lens more than there hasn't been. So the new price after rebate is roughly $1300. There is a good deal of recent fraudulent postings with the 100-400mm... so I'm going to just cut to the chase and estimate that the used selling price has been roughly $1250 to $1030 with a recent recent price drop in the last two weeks as the rumors of the mkii version became to pick up steam.
So with the 100-400 mkii's release, we should see the 100-300L's price further depressed, though it seems to have already begun... This may sound like a broken record, but I'm estimating down to $900, but I see a greater deviation... I can see $800 consistently being the asking price and being quickly snatched up. Used prices will plateau around $950...
This is all conjecture... and I'm not really in the market for either lens. i wouldn't mind finding out that I'm wrong about the 70-300 and the price goes even lower (at which point maybe I'm in the market for the lens). It's also possible I'm entirely wrong... the release of the 24-70mm f/2.8L mkii went up in price for a used lens... so future telling is still a mystery.