Difference Between Kenko Pro 300 AF 1.4 and Kenko Teleplus MC4 1.4x (Page 3): What makes them "different" ??

imagemeister Loc: mid east Florida

robertjerl wrote:

They aren't, I just read the specs on both the Tamron and Kenko sites.
Here is Tamron:
http://www.tamron-usa.com/lenses/prod/teleconverters.php

And again, Kenko:
http://www.kenkotokinausa.com/kenko/products/teleplusdgxdg/telepluspro300af14xdgx/

What makes them "different" ??

robertjerl Loc: Corona, California

imagemeister wrote:

What makes them "different" ??

Have a nice day.

imagemeister Loc: mid east Florida

robertjerl wrote:

Have a nice day.

You too !

romanticf16 Loc: Commerce Twp, MI

MtnMan wrote:

It goes on to say it is for zoom lenses above 50mm... (show quote)

I use a 2X Kenko Pro with my 18-300Nikon 3.5-5.6 VR. With all these converters the thing to check is the distance from the rear objective of the lens to the converter"s front lens. I made sure there was clearance before I purchased mine.

MtnMan Loc: ID

romanticf16 wrote:

I use a 2X Kenko Pro with my 18-300Nikon 3.5-5.6 VR. With all these converters the thing to check is the distance from the rear objective of the lens to the converter"s front lens. I made sure there was clearance before I purchased mine.

How did you do that?

imagemeister Loc: mid east Florida

imagemeister wrote:

Yes, I am saying the info that they are posting is WRONG ! (typo, oversight, whatever you want to call it) - Look under the 2X and see what they are saying ..... more internet misinfo !

Here - https://www.bhphotovideo.com/c/product/674565-REG/Kenko_PRO3001_4XDGXC_Teleplus_PRO_300_DG.html

Scroll down the page and look at the B&H description ......

romanticf16 Loc: Commerce Twp, MI

MtnMan wrote:

How did you do that?

I went to CameraMart in Pontiac, MI and had them mount their 18-300 on the 2x Kenko Pro, then I mounted it on my D300. Once I knew it worked thru the entire zoom and focus range without damage to their lens I bought the converter. If there had been an issue it would have been their problem in giving a demo of their lens and converter. The Kenko Pro extenders also work with the D model Nikon lenses like my f2.8 80-200 ED IF D lens, which won't work with new Nikon Extenders. Those are 2 reasons I bought the Kenko Pro.

robertjerl Loc: Corona, California

imagemeister wrote:

Here - https://www.bhphotovideo.com/c/product/674565-REG/Kenko_PRO3001_4XDGXC_Teleplus_PRO_300_DG.html

Scroll down the page and look at the B&H description ......

Problem solved, we are talking about two different products, there is an "E" version DGX-E

Here is the spec page from Kenko's own site, you will have to download to read the fine print.

(Download)

robertjerl Loc: Corona, California

romanticf16 wrote:

I went to CameraMart in Pontiac, MI and had them m... (show quote)

You could have just held the lens and zoomed it, focused it etc and observed if anything came back and protruded.
That is how I checked to see if there would be contact and damage. Since nothing in the Kenko moves the only thing that needed to be checked was to see if the rear element of the lens protruded at any time during zoom or focus.
That is why Kenko says don't use them on Canon EF-S mount lens, their rear elements protrude.

MtnMan Loc: ID

robertjerl wrote:

Problem solved, we are talking about two different products, there is an "E" version DGX-E

Here is the spec page from Kenko's own site, you will have to download to read the fine print.

Yes, they are two different products. The question is, "How do they differ?"

That is the point of the thread.

I was to the Kenko site before asking and cannot see the difference.

MtnMan Loc: ID

romanticf16 wrote:

I went to CameraMart in Pontiac, MI and had them m... (show quote)

Thanks.

imagemeister Loc: mid east Florida

Again, the 2X Pro is 7 elements, the 1.4X Pro is 5 elements and elements are larger than the 1.4X MC4, the 1.4X MC4 is 4 elements. The MC4 has out performed the PRO and the Canon 1.4X III in a German testing with the Canon 70-200 f4L ! And, I don't care what it says on the Kenko site - because it WRONG.

MtnMan Loc: ID

Decision time. Sent the Adorama link for the Pro 300 to my wife. Birthday in a couple of weeks.

Thanks all for your inputs.

romanticf16 Loc: Commerce Twp, MI

robertjerl wrote:

You could have just held the lens and zoomed it, focused it etc and observed if anything came back and protruded.
That is how I checked to see if there would be contact and damage. Since nothing in the Kenko moves the only thing that needed to be checked was to see if the rear element of the lens protruded at any time during zoom or focus.
That is why Kenko says don't use them on Canon EF-S mount lens, their rear elements protrude.

It gave me more confidence to see the product mounted on the lens I planned to use it with before spending my $$. People without full service camera stores nearby are at a disadvantage. Once I saw it worked I purchased it from the camera store that demo'd it for me. I believe in supporting local businesses whenever possible.

MtnMan Loc: ID

MtnMan wrote:

Thanks for a good link.

The difference isn't jumping out at me. Although one says it is for prime lenses it goes on to say it is good for zooms above 50mm.

I'll print and do a detailed compare of the writeups and specs to see if that tells me the difference.

Seems like there should be a significant difference to justify two products for the same function.

The listed differences include 7 Elements and Digital Multicoating for the Pro 300 vs. 4 Elements and no coating listed for the MC4.

The specs also claim the Pro 300 is 2.6 in. long vs. 1 in. for the MC4 but the photos do not agree with that claim. They look about the same. (I suspect the 2.6 in. is for the 2.0x).

Those differences justify the higher price of the Pro 300 enough for me.

There might be one other difference but again the info is inconsistent. The PRO 300 might have the mechanical autofocus connection for older Nikon lenses (AF). It says the diaphragm is Manual/electronic while the MC4 says Fully Automatic. But both say they are for Nikon AF. Nikon lenses with autofocus motors are AF-S or (newest) AF-P.