tjsimonsen
Well-known member
Holy Crap Stu! That's a good shoot of the "Big Beak"!
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The 7D has landed!!! (1 Viewer)
- Thread starter Jaff
- Start date
That's a nice shot Bob, Daurian Redstarts are so skittish where I am, I don't have a single decent shot of one......
Jaff
Registered Member
Did you tape the pins on this one or did you MF?
I think that's an area we still need to hear more about, particularly with all the different AF options.
Roy C
Occasional bird snapper
Focal length is shown as 400mm so must have been taped or a non reporting tc.
Bob Thompson
Well-known member
I leave the tape on the pins of the extender and Roy that is correct you will only see 400mm in the EXIF details as that's how the camera sees the lens.
Bob
Bob
Roy C
Occasional bird snapper
I think what people want to know Bob is how well the AF works with a taped tc - also are you using the centre focus point.
Bob Thompson
Well-known member
Roy, it is extremely slow if you use the centre point focus, I am using "manual select AF zone" and selecting the block on the right or left of centre. Sometimes it is very quick, as I only have a 400mm f5.6 lens I don't know about AF with other lenses.
This is another shot using the extender but with slow shutter speed to get motion blur in the water. There is a slight ammount of movement due to the fact I only used a monopod
ISO 100, f11, 1/6 sec
http://farm3.static.flickr.com/2670/4117182794_f19edd74fa_b.jpg
This is another shot using the extender but with slow shutter speed to get motion blur in the water. There is a slight ammount of movement due to the fact I only used a monopod
ISO 100, f11, 1/6 sec
http://farm3.static.flickr.com/2670/4117182794_f19edd74fa_b.jpg
Last edited:
Roy C
Occasional bird snapper
I think that is what everyone wants to know Bob. Sounds like the centre focus point with a taped tc is similar to the 40D/50D (eg fairly sluggish and hunts a lot).
On the 40D/50D the AF with a taped tc works better on one of the outer AF points just the same.
Bob Thompson
Well-known member
Roy, IMO The Canon 7D combined with a Canon 400mm f5.6 lens has got to be the best combination around at the moment for Birds in Flight.
Bob
Bob
Roy C
Occasional bird snapper
Yes, the 400/5.6 is a great flight lens - I sold mine a while back and upgraded to the 300/2.8.
I tried to use my Kenko, with taped pins, yesterday. Light had improved but wasn't brilliant. Using centre focus point was a non starter. Very hit and miss if it focussed. Will try using Bob's method. Will also try Canon 1.4.
My initial plan was to use the 400 f5.6 on the 7D without converters and my 1D with stacked converters. Suspect I may be sticking to this.
Found af on the 7D with 400 f5.6 was brilliant even in terrible light.
Phil
Phil
My initial plan was to use the 400 f5.6 on the 7D without converters and my 1D with stacked converters. Suspect I may be sticking to this.
Found af on the 7D with 400 f5.6 was brilliant even in terrible light.
Phil
Phil
Roy C
Occasional bird snapper
I think that zone AF could be useful for users with a taped tc and f5.6 lens (400/5.6 and 100-400)
As an experiment I just tried the 300/2.8 with stacked 1.4x and 2x tc which is in effect f8 (although the camera only sees one of the converters - so same scenario as a f5.6 lens with a taped 1.4tc). The light is pretty dire and using just the centre point it would not obtain focus BUT when I switched to zone AF (centre cluster) it did obtain focus every time, albeit quite slowly.
I would have thought in good light this would be a usable option to obtain AF at f8.
As an experiment I just tried the 300/2.8 with stacked 1.4x and 2x tc which is in effect f8 (although the camera only sees one of the converters - so same scenario as a f5.6 lens with a taped 1.4tc). The light is pretty dire and using just the centre point it would not obtain focus BUT when I switched to zone AF (centre cluster) it did obtain focus every time, albeit quite slowly.
I would have thought in good light this would be a usable option to obtain AF at f8.
Pluvius
Well-known member
This is an interesting tracking example of bird in flight.
http://greggard.zenfolio.com/p437133533/h3f978c82
http://greggard.zenfolio.com/p437133533/h3f978c82
Thats a good example.
Ive only really used the AF hard once so far and I was really really impressed by it (I normally use a mk3)
What I really like is the constant indication of what the autofocus is tracking (when using the full 19 point area). That is very useful.
I can't see how the mkiv is going to be able to be worth 4 times a 7d. Not for wildlife photographers anyway.
Ive only really used the AF hard once so far and I was really really impressed by it (I normally use a mk3)
What I really like is the constant indication of what the autofocus is tracking (when using the full 19 point area). That is very useful.
I can't see how the mkiv is going to be able to be worth 4 times a 7d. Not for wildlife photographers anyway.
Jaff
Registered Member
Was dismal when I tried that with the 40D. No great surprise really.
'taping'
Wonder if someone could help out, I've just purchased a 7D but previously used a 40D with Canon 100-400 and a (Canon) 2X TC. Unfortunately I never had any AF success when taping the 3 contact pins on the converter....is it now possible with the 7D and any advice for settings?
Wonder if someone could help out, I've just purchased a 7D but previously used a 40D with Canon 100-400 and a (Canon) 2X TC. Unfortunately I never had any AF success when taping the 3 contact pins on the converter....is it now possible with the 7D and any advice for settings?
Roy C
Occasional bird snapper
Tom, I do not think there will be any chance of getting AF with a 2x tc and a f5.6 lens as this takes it to f11 - way outside the AF specs for the Camera. With a 1.4tc you lose just one stop but with the 2x you lose 2 stops.
Unless you can make use of the 2x by manually focussing (image quantity will be severely hit thought) you would be better off selling it and getting a 1.4tc IMO. Even with a 1.4 tc I am not sure how well the 100-400 will focus with taped pins on the 7D. I would wait until you get some feedback from someone who has the combo.
