7D - Mid to heavy crop performance
/forum/topic/821100/1

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Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

hnilsson wrote:
Good grief, Conrad, so you decide to go out and for a shoot and this is what you end up with in a day I need to move obviously! Good job.

Your experience with that 7D seems to mirror my own. I hope to see more of the AF system in future bodies (perhaps a fairly safe bet).

H


Ya I was blessed by the birding gods that day! Don't you just love the AF point tracking? Its a joy to watch at work!



jfwoodman
Registered: Oct 31, 2007
Total Posts: 4609
Country: United States

This is very helpful as I consider the 7D for nature photography. I love my 1DIII's AF tracking, but find the 10MP inadequate for cropping needs when using a 400 or 500mm lens, especially for birds (and an 800 is not in the cards at this point). And my 40D's AF for BIF ends up frustrating me (but I'm sure 90% of that is user incompetence).

I also wonder if you find the 7D's AF significantly better than the 50D - or if others find the 7D close to comparable to the 1DIII? Mr. Israel - any thoughts?

If the 7D could focus even 80-90% as well as the 1DIII, I would probably make the switch, as I don't need many of the "pro" features of the 1D.

Thanks again for these examples.



Shasoc
Registered: Aug 24, 2005
Total Posts: 31633
Country: United States

Conrad Tan wrote:
I still have not read the manual,







BTW those in flight refueling shots are great!
Socrate



Tom_W
Registered: Jan 21, 2004
Total Posts: 5387
Country: United States

Awesome images, Conrad. You're really showing off the 7D.

I don't think that there's any doubt that it'll track a bird in flight!



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

I'm terribly sorry fellas but as is part of my workflow due to my ever shrinking amount of storage space, I delete most images as I post them.

These three photos are the only ones I found in my recycle bin so again I apologize. I will be going out to shoot again tomorrow so I'll put up some comparisons on this post for all that have requested original shots.



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

I found one more original...



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

sivrajbm wrote:
Nice set Conrad, it would help though to see the original then the crop or vis-versa for comparison


I'll go out again tomorrow and shoot some heavy crops for you. I delete my stuff as soon as I finish processing to save memory. (I'm almost out )



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

genemiller wrote:
Wonderful series, Conrad. All the photos are extremely sharp, even with the "heavy crop" you used. Could you post the originals on photos 1, 2, and 3 so we could get an idea of how much cropping you did? It would be very helpful in understanding the crop limits. Thanks.

GENE


I'll put some up tomorrow for you Gene and other's that have asked. I put what I had left in my recycle bin up.



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

pinball_pw wrote:
Nice set Conrad. Looks like you can crop these pretty heavily and have usable files. I like all of them, but number 4 would be my favorite of the set. - Paul


Thanks Paul!



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

Gil_W wrote:
Beautiful. Great examples of what the camera can do in good light with an excellent photog.


Aww Gil stop it your making me blush!



jolson72
Registered: Sep 03, 2005
Total Posts: 397
Country: United States

Could you put up a few more examples so I can really see what the cropped images might look like...........



akilah
Registered: Aug 28, 2008
Total Posts: 162
Country: United States

These are *really really good*. Not just a bit good. I'm jealous, particularly of the dragonflies, I've been trying to capture them in flight too with no luck -- did the autofocus on the 7D help, or was it just photographer's instinct?



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

Dave Bachrach wrote:
Conrad,

Wow! What an awesome series with any dslr camera or lens. How does your 7D "keeper" rate compare to your 50D? In your opinion Is the new auto focus worth the upgrade from a 50D?

Dave


Definately worth the upgrade from the 50D IMHO. Just from frame rate alone, my keeper rate has DOUBLED. Only thing is I can only sell my 50D for $900. So be ready to pony up the $1000 for the rest. My credit card is still reeling from the pain



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

jolson72 wrote:
Could you put up a few more examples so I can really see what the cropped images might look like...........


Yes I will tomorrow. I delete my stuff after processing of late due to lack of memory. I am going out again to the same spot so the images will be the same again.



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

akilah wrote:
These are *really really good*. Not just a bit good. I'm jealous, particularly of the dragonflies, I've been trying to capture them in flight too with no luck -- did the autofocus on the 7D help, or was it just photographer's instinct?


The dragons were just lucky my friend. They would zip by, then hover for 1 second. Then zip away. The 8fps of the 7D IMHO is what got me the shot. I just traced the flight path as best I can and when they hovered, the AF locked on and got them!



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

Jim Woidat wrote:
This is very helpful as I consider the 7D for nature photography. I love my 1DIII's AF tracking, but find the 10MP inadequate for cropping needs when using a 400 or 500mm lens, especially for birds (and an 800 is not in the cards at this point). And my 40D's AF for BIF ends up frustrating me (but I'm sure 90% of that is user incompetence).

I also wonder if you find the 7D's AF significantly better than the 50D - or if others find the 7D close to comparable to the 1DIII? Mr. Israel - any thoughts?

If the 7D could focus even 80-90% as well as the 1DIII, I would probably make the switch, as I don't need many of the "pro" features of the 1D.

Thanks again for these examples.


Well Jim, I've never used the 1DmarkIII so I can't comment on the comparisons regarding AF, but as far as from the 40D to the 7D? Probably worlds apart. It doesn't disappoint I can guarantee it.



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

Shasoc wrote:
Conrad Tan wrote:
I still have not read the manual,







BTW those in flight refueling shots are great!
Socrate


Hahahha!! Socrate you kill me.



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

Tom_W wrote:
Awesome images, Conrad. You're really showing off the 7D.

I don't think that there's any doubt that it'll track a bird in flight!


Thank you sir! I'm just having a ball with it Tom. If it is any prelude to the new 1DmarkIV AF system, I think folks will be really happy.



kirry007
Registered: Feb 06, 2008
Total Posts: 1434
Country: United States

Dood !!! Is this Auto-AF mode ? Amazing stuff, Conrad !



Conrad Tan
Registered: Dec 08, 2007
Total Posts: 28399
Country: United States

kirry007 wrote:
Dood !!! Is this Auto-AF mode ? Amazing stuff, Conrad !


YES!!! I did no work here... just kinda pointed in the general area of the birds in flight.. then closed my eyes. Seriously!



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