Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 30 Dec 2006 (Saturday) 14:45
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

what F stop to use with 2x TC and 70-300 IS USM lens

 
tekkie
Goldmember
Avatar
2,621 posts
Likes: 1
Joined Dec 2006
Location: Clarkston, MI
     
Dec 30, 2006 14:45 |  #1

hey guys I was wondering what F stop your using for good pics, I know the pics will be softer with the TC already but maybe at a certain level there is a sweet spot or something

I am usually shooting at 300mm with the Tamron 2x tc, the AF does not work at all at 300mm, I have never had it focus properly its just hunting like crazy.

So I guess that is a second question, how do you know if your focus is good or not at that level? the great viewfinder on the XT its very hard to tell. I know there is supposed to be a red dot show up but it never does not matter what I try, at 70mm it works fine thought. I have taken some pics manually and the pics are not that bad but its very hit and miss. I have tried with IS on and off and no difference :(

the lens itself takes awesome pics though :D


Canon 1DMKII, 7D, 5DMKII, 1D MKII
Canon 500L, 100-400L
, 70-200 2.8L, 17-40L, 24-105L, 24mm 2.8,50mm 1.4, 85mm 1.8, 135mm 2.8 SF, 100mm Macro
Canon 430 & 580 flashes

  
  LOG IN TO REPLY
Chad ­ McCan
Member
142 posts
Joined Mar 2006
Location: Kansas City, MO
     
Dec 30, 2006 15:19 |  #2

You are using the Tamron TC, which will probably require you to tape pins, because at 300mm, your lens is only capable of F11. That should give you AF. Beyond that, f11 isn't exactly ideal for much.

What are you shooting that you need the TC for?


Thank you,

Chad McCan

  
  LOG IN TO REPLY
tekkie
THREAD ­ STARTER
Goldmember
Avatar
2,621 posts
Likes: 1
Joined Dec 2006
Location: Clarkston, MI
     
Dec 30, 2006 15:25 |  #3

yeah I should have mentioned I already tried the tape trick, no difference the thing still hunts like crazy :(

I am using it to shoot pics of birds, deer etc...

here is one I snapped earlier today, this is at 300 with the TC on there, this was not cropped at all though, when you pull it to 100% you can see the image softness

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO

Canon 1DMKII, 7D, 5DMKII, 1D MKII
Canon 500L, 100-400L
, 70-200 2.8L, 17-40L, 24-105L, 24mm 2.8,50mm 1.4, 85mm 1.8, 135mm 2.8 SF, 100mm Macro
Canon 430 & 580 flashes

  
  LOG IN TO REPLY
phylet
Senior Member
Avatar
501 posts
Joined Feb 2006
Location: Leicester - UK
     
Dec 30, 2006 15:48 |  #4

tried adding some sharpening to that image? might look OK...


Canon EOS 1D MkII, Sigma 10-20 F4-5.6, Sigma 24-70 F2.8, Sigma 105mm Macro F2.8, Sigma Super 500 Flash

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

780 views & 0 likes for this thread
what F stop to use with 2x TC and 70-300 IS USM lens
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is kenf
818 guests, 302 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.