lens extnder? help

magicpic

I would like to hear from some people who use a lens extender...I have a canon30 with the 70-200 IS 2.8 lens that I want to use one on....do you buty the canon 1.4 or 2.0 or can the tamron extender work on my canon camera..hope to hear janis

ziggy53

Canon does not recommend the use of more than the 1.4x converter with the Canon EF 70-200mm lenses.

I have an older Tamron "F" series teleconverter that works OK at 200mm. Sharp in the center it gets a little soft around the edges.

It will slow down the autofocus and also affect low-light and low contrast focus.

I am not disappointed with mine but I don't use it as much as I thought I might.

magicpic

ziggy53 wrote:

Canon does not recommend the use of more than the 1.4x converter with the Canon EF 70-200mm lenses.

I have an older Tamron "F" series teleconverter that works OK at 200mm. Sharp in the center it gets a little soft around the edges.

It will slow down the autofocus and also affect low-light and low contrast focus.

I am not disappointed with mine but I don't use it as much as I thought I might.

thanks for the response..janis

i_worship_the_King

Anyone know how this advice holds up in Nikon Land with say a 70-300?

Tee Why

In terms of TC's, I would recommend sticking with a 1.4x TC. I think a 2x TC extracts too much optical sacrifice. I've used the 70-200 f2.8 IS with Canon's 2x TC and found too much CA and corner softness till you stop down to f8.

I hear Kenko's Pro TC's are comparable to Canon's and are significantly cheaper as well.

Tee Why

i_worship_the_King wrote:

Anyone know how this advice holds up in Nikon Land with say a 70-300?

Generally, a TC works well with a high quality telephoto/supertelephoto.

On a consumer grade lens, a TC may not be an optically good idea. Of course I use Canon's and am not sure about Nikon lenses specifically.

magicpic

Tee Why wrote:

Generally, a TC works well with a high quality telephoto/supertelephoto.

On a consumer grade lens, a TC may not be an optically good idea. Of course I use Canon's and am not sure about Nikon lenses specifically.

I have got a canon 30D plus the 70-200 is 2.8 do you have any photos you can show using the TC? thanks I will look into the kenko lens extender janis

Photoskipper

magicpic wrote:

I have got a canon 30D plus the 70-200 is 2.8 do you have any photos you can show using the TC? thanks I will look into the kenko lens extender janis

I have the 70-200 F2.8 IS and both Canon 2X TC and the Kenko 2X TC. I bought the Kenko couple years ago as it was much cheaper and I just wanted to test it.

The Kenko really cannot compare the Canon in terms of contrast and sharpness. I am trying to sell away the Kenko but no taker.

I also agree that 2X is a bit extra, 1.4X will be better in terms of sharpness and over all sharpness.

Attached is the photo taken with the 70-200 and 2X with handheld and IS. It was taken in the haze morning, the light was not good.

i_worship_the_King

I was just on the canon website last night. Says they redesigned for a version II, supposed to have better optics. Any words from the street?

ziggy53

i_worship_the_King wrote:

Anyone know how this advice holds up in Nikon Land with say a 70-300?

Zoom lenses in general are not good candidates for teleconverters. I'm afraid the Nikon 70-300mm and 75-300mm lenses are no exception.

Generally teleconverters work best on fast, large aperture, high quality lenses with longer focal lengths. In Nikon, the 1.4x and 1.7x converters yield better results overall.

Refer to the charts here for basic compatibility:

http://blog.nikonians.org/archives/Nikonians%20Teleconverter%20Table.pdf
http://www.nikonlinks.com/unklbil/teleconverters.htm

claudermilk

I never recommend using TCs on the 70-200. I hate the results in general. If you are going to need the reach often, get a longer lens. If you need the reach only occasionally, rent a longer lens. Either way, you will have better images.