rebel - close ups and extension tubes

[jonnyhorizon]

i have a rebel with the kit lens and a 70-300 IS
i would like to have something inexpensize to do wildflowers with this summer
i am considering getting a EF 50 1.8 (B&H 74.95)
and adding extension tubes
any opinions?
anyone know of tubes less expensive than the canon EF12-79.95 and ef25 129.95

????

[CoolToolGuy]

I have the set of Kenko extension tubes. They come as a set, and are less expensive than the Canon tubes. Since there are no optics involved, the most important aspect is the electrical contacts, and they seem to be fine. I have had them on the camera, but I have not yet shot any images.

They are generally available. Check B&H, KEH, or your local camera store.

Have Fun,

[robertwgross]

Yes, I have one from Kenko. It works.

---Bob Gross---

[kb244]

Well the nice thing is, with the 50mm 1.8 on the rebel, thats 80mm after mag, then with 2X thats 160mm, and I wish I had kept my tamron 2X til i had my 50mm 1.8, cuz prior to the 50mm , I couldnt really autofocus that well due to the stop of light loss from the tele convertor.

By the way, arnt the canon extension tubes, only meant for the L series glass, and even then dont some of them turn off the Autofocus automatically.

[Roger_Cavanagh]

Well the nice thing is, with the 50mm 1.8 on the rebel, thats 80mm after mag, then with 2X thats 160mm, and I wish I had kept my tamron 2X til i had my 50mm 1.8, cuz prior to the 50mm , I couldnt really autofocus that well due to the stop of light loss from the tele convertor.

By the way, arnt the canon extension tubes, only meant for the L series glass, and even then dont some of them turn off the Autofocus automatically.

You are confusing extension tubes (that are nothing but tubes with no glass and provide macro/close-up capability by moving the lens away from the sensor) with extenders - sometimes called tele-converters - that do have additional optics and increase the focal length of the lens.

Regards,

[kb244]

doh, the extenders for macro/close-ups right.

[dn7elson]

the extenders for macro/close-ups right.

You can use them with telephoto and zoom lenses. I shot some flowers at a botanical garden with the Canon EF25 II extension tube with my 70-200f4.0L lens to get shots of flowers.

Seems that you rough focus with the zoom in this instance, and then the camera does the fine focus via AF.

[Roger_Cavanagh]

doh, the extenders for macro/close-ups right.

Duh...

These are the extenders:

http://www.usa.canon.com/eflenses/lenses/ef_14x/ef_14x.html
http://www.usa.canon.com/eflenses/lenses/ef_2x/ef_2x.html

And these are the extension tubes:

http://www.usa.canon.com/eflenses/accessories/index.html#closeup

[drisley]

What about macro filters like the 250D and 500D?

[Roger_Cavanagh]

What about macro filters like the 250D and 500D?

Some info (http://www.rogercavanagh.com/helpinfo/18_500D.htm)