Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Olympus dSLR

Reply
 
Thread Tools Search this Thread
Old Jun 12, 2009, 8:32 AM   #1
Senior Member
 
Join Date: Jul 2007
Posts: 722
Default 70 300 alternative to EC14

I originally had an oly SP 560 which I bought a tcon for so I could shoot birds. When I bought the 510 and 70 300 I was considering an EC14 until one of my friends from another post mentioned buying a step down ring and adding the tcon. It works very well at a third of the cost and less of an issue dealing with light or lack thereof. For those unfamilar with the tcon or B300 of old, they are very good glass and have little impact on quality of the shots taken. Here's a picture of the 510/70 300/Tcon.
Eric
Attached Images
 
eharrim is offline   Reply With Quote
Sponsored Links
Old Jun 12, 2009, 9:04 AM   #2
Senior Member
 
boBBrennan's Avatar
 
Join Date: Aug 2005
Location: Arlington, Texas USA
Posts: 3,554
Default

......that is interesting and a good looking combination, please show us some photos
_________
boBBrennan
boBBrennan is offline   Reply With Quote
Old Jun 12, 2009, 9:11 AM   #3
Senior Member
 
Old Jim's Avatar
 
Join Date: Oct 2005
Posts: 565
Default

Post some images with and without the Tcon. When I had my 6490 I found it to be a poor substitute for for better glass.
Old Jim is offline   Reply With Quote
Old Jun 12, 2009, 9:47 AM   #4
Senior Member
 
Join Date: Sep 2003
Location: Dallas, Texas USA
Posts: 6,483
Default

I would also be very wary of the added weight of the TCON to the front of this lens, especially since the part of the lens barrel that extends does rotate when it focuses, so you are adding a considerable amount of mass this lenses motor was not designed to have to deal with. I have the TCON as well and would not even think of adding it to the 70-300.
Greg Chappell is offline   Reply With Quote
Old Jun 12, 2009, 9:54 AM   #5
Senior Member
 
Join Date: Jul 2007
Posts: 722
Default Only taken a couple

I've only had it out once late afternoon in so so light. Here's a couple first attempts. I don't post here a lot so I hope they come through ok.
Attached Images
  
eharrim is offline   Reply With Quote
Old Jun 12, 2009, 10:15 AM   #6
Senior Member
 
Join Date: Jul 2007
Posts: 722
Default You're right Greg

The first thing I considered was the extra weight. I'm only using this for longer wildlife shots about 5% of it's usage I'm guessing. It is supported and I don't let it hang with the weight on the end. From a focus standpoint it seems to work fine but you are right it wasn't designed to work with the tcon, but it does work. Just an idea not a recomendation.
eharrim is offline   Reply With Quote
Old Jun 12, 2009, 10:32 AM   #7
Senior Member
 
Join Date: Sep 2003
Location: Dallas, Texas USA
Posts: 6,483
Default

Your first couple of images look good enough. 1.7x, assuming you had it out to 300mm....that's 510mm or an effective 1020mm, which would take the 50-500 Sigma or around a 50% crop of a 300mm shot with no TCON to duplicate.
Greg Chappell is offline   Reply With Quote
Old Jun 12, 2009, 11:54 AM   #8
Senior Member
 
Join Date: Jul 2007
Posts: 722
Default Yes, 300mm

Yes these were at 300mm. I does work ok but your comment about the focus motor is well taken. Even though it's supported very well it does have extra weight to turn not figured in to the scheme of things. If it had to focus in and out a lot which is sometimes the case in low light then this may not be a good alternative but for the short time I used it I saw no issues.
eharrim is offline   Reply With Quote
Old Jun 13, 2009, 8:40 AM   #9
Senior Member
 
Old Jim's Avatar
 
Join Date: Oct 2005
Posts: 565
Default

I agree with Greg these are good enough but I don't think they are as sharp as would be with the 70-300 by itself. Nice try anyway.
Old Jim is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 6:03 PM.