1.4x Teleconvertor, Canon vs Kenko

RogerZoul wrote:

ZiggyDeath wrote:

RogerZoul wrote:

Whenever I see posts about the Kenko TCs I get concerned because it seems there are two versions with different specs and folks get them confused.

The Kenko C-AF 1.4x Teleplus Pro 300 will allow AF to work on a 6D at F/8, which is what you get if you use it with that 100-400 f.4.5-f5.6L. It also reports the proper f-stop in the metadata. I don't believe the non-Pro version will do this. There is no need to tape any pins with this particular TC.

Actually a lot more complicated... there are many versions

There are two lines, the Pro300 and the MC4 - with the Pro being the superior of the two.

In these lines are are subsets such as DG, DGX, DGX-E.

DG is the earliest type, they don't have the electrical connectors so it's a non-reporting TC.

DGX is a reporting TC, they added the electronics needed for it - tape pins apply

DGX-E - no bloody clue what changes, but it's a reporting TC. Saw something about compatibility with some newer lenses or something.

Currently in production is only the Pro300 DGX-E and the MC4 DGX-E. So they're all reporting TCs. Unless you're Nikon, which hasn't/doesn't/whatever reason is still only on the DGX version.

In NA, the most common type is DGX, so you run a search on your favored vendor and you're likely to pull up MC4 DGX or Pro300 DGX - which means reporting and you will need to tape pins. Why the Japanese DGX-E hasn't made it here, no clue.

In order to not tape pins you'll need to find the much older DG series.

Why do you need to tape pins with the DGX?

I did not need to with my T3i and 400 ƒ5.6L so dont know why it was mentioned. It might not work with every body, but many have been successful with the Kenko DGX  auto focusing. Also I am using the center AF point on my body and it works pretty well and decently fast to focus.