Am I doing something wrong or expecting too much out of my lens
Jun 28, 2013 11:54:53 #
You can't post raw files.
Pics look right for what you have.
They are a little soft.
GP
Pics look right for what you have.
They are a little soft.
GP
Jun 28, 2013 12:06:08 #
Whitebasser wrote:
I have a canon 40D. Lens Canon 700-200 is ll 2.8 I also got the 1x 4 extender. I am not able to zoom in on pictures like I expected to do. Are the pictures posted on this forum cropped so close to pull them in or am I expecting too much. Tried to take pictures of birds about 25 feet away and they are not zoomed up close. I really wanted the 100-400 but this was all I could afford. Thanks for your help
If you really wanted the 100-400, you should have bought that one, it is waaaayyyy cheaper than the one you're shooting with now.
Jun 28, 2013 12:07:39 #
If you want the subject to fill the frame then you will need to get closer. Since you have a 2.8 lens auto focus should not be affect with a 1.4 or even a 2x converter.
Practicing is the key, If you do not have Image stabilization then a shutter speed of 2x the focal length may be in order. Most lens have a sweet spot where they are the most sharpest. It's beneficial to experiment to find the sweet spot for your lens. It's usually between 4 and 8 on a 2.8 lens but they are all a little bit different. Experiment with the ISO limitation for you specific camera to find what your noise threshold is.
Practicing is the key, If you do not have Image stabilization then a shutter speed of 2x the focal length may be in order. Most lens have a sweet spot where they are the most sharpest. It's beneficial to experiment to find the sweet spot for your lens. It's usually between 4 and 8 on a 2.8 lens but they are all a little bit different. Experiment with the ISO limitation for you specific camera to find what your noise threshold is.
Jun 28, 2013 12:11:31 #
Whitebasser
Loc: East Texas
Pretty neat demo. Amazing how much difference from 0 to 70 Then 70 to 200. 200 to 280 is not a lot. As I understand that is what I get by adding extender. Also my properties break down on computer list it as 280 on the max. Hum!! Now I know why I have to save up or win lottery to get what I really want. Want and need I think are very different. Thank you so much for the info.
Jun 28, 2013 12:25:55 #
Whitebasser wrote:
I have a canon 40D. Lens Canon 700-200 is ll 2.8 I also got the 1x 4 extender. I am not able to zoom in on pictures like I expected to do. Are the pictures posted on this forum cropped so close to pull them in or am I expecting too much. Tried to take pictures of birds about 25 feet away and they are not zoomed up close. I really wanted the 100-400 but this was all I could afford. Thanks for your help
Extenders generally don't work well on zooms. Zooms are stressed out a bit to begin with- The extender magnifies the zoom's limitations.
Jun 28, 2013 12:26:03 #
Whitebasser
Loc: East Texas
Thanks, I did not know that the auto focus does not work well with extender.
Jun 28, 2013 12:27:34 #
Whitebasser
Loc: East Texas
Sorry, I stated wrong. Not the 100-400 that I really wanted. It was the 300 or 400 but they are not in my price range at this time. Maybe I will get good enough with what I have to upgrade eventually. Thanks for the help.
Jun 28, 2013 12:30:58 #
I use a 2x TC on a 80-200 2.8 and I have had zero problems with auto focus on a Nikon D80 and Nikon D7100. My friends with canons have similar experiences
Jun 28, 2013 13:50:26 #
Jun 28, 2013 14:30:24 #
Jun 28, 2013 14:57:43 #
Jun 28, 2013 15:13:21 #
Samuraiz wrote:
I use a 2x TC on a 80-200 2.8 and I have had zero problems with auto focus on a Nikon D80 and Nikon D7100. My friends with canons have similar experiences
Same here, I use the 1.4xIII on my 70-200 and also on my 400/5.6, no auto focus problems with either one.
Jun 28, 2013 15:21:40 #
I'm no expert but the bird shot with the extender is further away that the bird without, on the other side of the hose. If it was me I would test it on something static from a tripod to get a true comparison
Jun 28, 2013 16:46:28 #
Whitebasser wrote:
OMG how did you do that. Seriously!!!!
I'm not the guy who did it, but it looks like just a normal crop. I can see the grain/noise starting to come up.
Jun 28, 2013 18:46:21 #
Whitebasser wrote:
Thanks for all of your input. I am posting a few pictures to see what you think. I better understand how the lens, camera and extender work together. I am trying so hard to understand how to make the triangle of iso, shutter, and aparture work so my pics may not be tack sharp. I am struggling. Someone suggest that I post a few so here goes. I thought these were shot in raw but they are coming up jpeg???
Find bigger birds, just kidding, but it is a thought. A 300 to 400mm lens would be the choice for most birders. I think that you have good equipment but you are going to have to get closer even with a more powerful lens. There is an old lens that is really a pretty good lens that you can sometimes find for about $200 on ebay that I bet that you would be happy with. The old Tamron f/5.6 200-400 LD. I have twice owned that lens and twice sold it because I was not using it. But my experience was that it was really a pretty high quality lens at a very reasonable price. I also suspect that many, not all but many of the photos you see posted on the forum are cropped.
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.