| Author | Thread |
|
|
12/30/2009 11:35:30 PM · #1 |
should i get a 2x Teleconverter for my Canon 400D i am useing a Tamron AF 70-300 mm 1:4-5.6 TELE-MACRO will i get up to 600 mm and will the photos look sharp with the Teleconverter (for wild life)
any help thanks
kevin |
|
|
|
12/30/2009 11:41:54 PM · #2 |
Not if you like to have a functioning AF. you will lose two stops of light with a t2X making your F5.6 at the long end, F11 I think? You can't AF with anything more then F5.6.
Matt |
|
|
|
12/30/2009 11:47:10 PM · #3 |
| As Matt stated, you will lose AF, and in addition, I don't think the image quality will meet your expectations either, even if you have enough light to shoot at f/11 or narrower (e.g. full sunlight). |
|
|
|
12/30/2009 11:53:42 PM · #4 |
| thanks kirbic and Matto for your reply, i am still learning |
|
|
|
12/31/2009 12:21:24 AM · #5 |
| Agreed with what they say above, but note that you're using a crop camera and your focal length is actually 1.6x what the lens states. So on the long end you're already at 480 (300*1.6). |
|
|
|
12/31/2009 12:39:33 AM · #6 |
|
|
|
12/31/2009 12:44:48 AM · #7 |
[quote=MattO]The image quality with a 2X on certain lens is actually quite good even wide open, the biggest thing is the lens it is attached too.
/quote]
Aren't the Canon converters L-quality? If it's a different converter it may not be as sharp.
|
|
|
|
12/31/2009 12:50:15 AM · #8 |
Originally posted by Ken:
Originally posted by MattO:
The image quality with a 2X on certain lens is actually quite good even wide open, the biggest thing is the lens it is attached too.
|
Aren't the Canon converters L-quality? If it's a different converter it may not be as sharp. |
I'm not sure, but they are white. I've not used another brand of 2X, I did have a 1.4 Kenko pro converter and it wasn't too bad. But not as good or weather sealed like my current canon ones.
Matt
Message edited by author 2009-12-31 00:50:38. |
|
|
|
12/31/2009 09:43:26 AM · #9 |
| .. and the Canon teleconverters only work on certain lenses. I don't think the intended lens is one of them. |
|
|
|
12/31/2009 10:27:49 AM · #10 |
Originally posted by cpanaioti:
.. and the Canon teleconverters only work on certain lenses. I don't think the intended lens is one of them. |
i can't find the list right now but the canon teleconverters are only compatible with select canon lenses. there are different views on the image quality with the 2x. it depends on your long lens technique and also i think its up to what level of sharpness is personally acceptable to you. |
|
|
|
12/31/2009 10:28:51 AM · #11 |
Originally posted by Ken:
Originally posted by MattO:
The image quality with a 2X on certain lens is actually quite good even wide open, the biggest thing is the lens it is attached too.
|
Aren't the Canon converters L-quality? If it's a different converter it may not be as sharp. |
The way to think about it is that the converter will amplify any defects in the optical quality of the lens it is attached to. So to expand on what Matt posted, attach it to a stellar lens like the 300/2.8 and you get good performance. Attach it to something that is already even just a tiny bit soft, and you get... mush, no matter how good the converter. Also, all converters will degrade the image a little bit. They are not perfect.
I have both a Canon 2x and 1.4x, and I previously had a Kenko 1.4x. The Kenko was pretty darn good on center, but at the edges of the (full) frame, it was somewhat soft. Now, you'd never see that on an APS-C camera. |
|
|
|
12/31/2009 10:34:57 AM · #12 |
The list of compatible lenses can be found here: //en.wikipedia.org/wiki/Canon_Extender_EF. It also lists out how the AF will work.
Message edited by author 2009-12-31 10:35:34. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Prints! -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2024 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 04/19/2024 02:54:06 PM EDT.
