p.6 #3 · Tamron 150-600 AI Servo sequential shots only
I finally got some sun and took Tony's and others advice and tried lower ISO on my 7D. To my supprise I got some BIF's that I'm proud of cause I never thought I'd be able to with the way I shake. I know they are slow birds but for me it's suprising and unexpected to get BIF's of anykind.
I had my bean bag on the truck window but found myself having to use it as a brace while hand holding these shots. I have resized, NR'ed a little and sharpened a little. I lost focus on the 5th shot on the Heron cause I started shaking, don't thing it was the lens. CC is always welcome cause that's how we all learn.
p.6 #6 · Tamron 150-600 AI Servo sequential shots only
IndyFab wrote:
What case and setting in case ^^ very nice
Thanks, it was Case 1 (no customizations) with Center Point + expansion. Looking at the files in DPP all but one I nailed with the center point, The 4th one in the series it must have used one of the expansion points
p.6 #7 · Tamron 150-600 AI Servo sequential shots only
dsr1 wrote:
I finally got some sun and took Tony's and others advice and tried lower ISO on my 7D.
Hey Don,
Not sure if that was what I said, but if I did, it was wrong. Raise your ISO to as high is required to get your shutter speed up to 1/2000 sec. You should not have to use a higher shutter speed than that.
It looks like after the first heron shot that you are starting to lose focus slightly. I am guessing that the AF in AI Servo probably works better at 256mm than 600mm. My 7D would simply not work at 600mm.
p.6 #8 · Tamron 150-600 AI Servo sequential shots only
From what I have seen so far, the 5D3 produces much better results with this lens than the 7D. Not surprising since the 5D3 focuses better than the 7D with Canon lenses.
p.6 #9 · Tamron 150-600 AI Servo sequential shots only
Imagemaster wrote:
Hey Don,
Not sure if that was what I said, but if I did, it was wrong. Raise your ISO to as high is required to get your shutter speed up to 1/2000 sec. You should not have to use a higher shutter speed than that.
It looks like after the first heron shot that you are starting to lose focus slightly. I am guessing that the AF in AI Servo probably works better at 256mm than 600mm. My 7D would simply not work at 600mm.
Tony
Tony,
When you commented I was using ISO 4000 you you suggested ISO 800 or lower. I do realize the lower the ISO number the more light the lens lets in. I'll try 400 or even 200 ISO and see what happens next sunny day and make sure I'm at 600mm.. The images I posted look over sharpened and still OOF a little but they are getting better IMO.
p.6 #10 · Tamron 150-600 AI Servo sequential shots only
I've got a 1DMKII and a 100-400, and have gotten loads of shots in and out focus with BIF.Sometimes I'll get 3 or 4 in focus and then it just seems to go out all by itself.
Other times I get all out of focus, this is using single shot and AI Focus as well.
This weekend I shot near the beach and was shooting gulls, mostly just for practice. Out of the probably 15 shots or so, I think maybe 5 to 7 were OK. I'm also pumping the shutter button sometime to keep them infocus, shutter speed was about 1/1600 to 1/2000 at 5.6 to 7.1.
Then again I was shooting in or around 15-20 Degrees F, so not sure how much affect that has as well. I did notice it does seem to take a bit longer to focus in cold weather though, so maybe that could be it ? Even on static objects it seems to hunt sometime when its colder.
p.6 #11 · Tamron 150-600 AI Servo sequential shots only
dsr1 wrote:
Tony,
When you commented I was using ISO 4000 you you suggested ISO 800 or lower. I do realize the lower the ISO number the more light the lens lets in. I'll try 400 or even 200 ISO and see what happens next sunny day and make sure I'm at 600mm.. The images I posted look over sharpened and still OOF a little but they are getting better IMO.
Don, try putting your camera in Tv mode with shutter speed set at 1/2000 and set your camera to auto ISO and let the camera chose the right ISO.
The ISO has no effect on how much light the lens lets in, only how the sensor reacts to the amount of light it receives. Like in the old film days, ASA 25 would produce the best image detail, but you needed good light. ASA 800 would give you grainier images, but you needed less light.
p.6 #12 · Tamron 150-600 AI Servo sequential shots only
Imagemaster wrote:
Don, try putting your camera in Tv mode with shutter speed set at 1/2000 and set your camera to auto ISO and let the camera chose the right ISO.
The ISO has no effect on how much light the lens lets in, only how the sensor reacts to the amount of light it receives. Like in the old film days, ASA 25 would produce the best image detail, but you needed good light. ASA 800 would give you grainier images, but you needed less light.
New here on what basis does your camera choose the ISO? I have never tried that before.
Getting some good tips on this board.
I have the Tamron 150-600 ordered who knows when it will be in my hands.
Thanks
p.6 #13 · Tamron 150-600 AI Servo sequential shots only
That's something I've been meaning to experiment with. In TV, for instance, if you set it at, say, 1/2000 does it prioritise the lowest Aperture or the lowest ISO (when auto ISO) it can? I know you can always put it into Manual, set the aperture and shutter then dial in auto ISO, but just wondered what it prioritizes - lowest ISO or widest aperture when in Semi-automatic modes? Sorry a bit off topic, I know - happy to take eleswhere if complex/controversial answer!!
p.6 #14 · Tamron 150-600 AI Servo sequential shots only
If you have ISO at 400, shutter speed set at 1/2000, and are using an f5.6 lens, if there is not enough light the ISO will be raised to give the correct exposure while still keeping the same shutter speed and f-stop.
p.6 #15 · Tamron 150-600 AI Servo sequential shots only
Thanks Imagemaster - just found an in depth article on it here on DP Review http://www.dpreview.com/articles/0206161199/an-in-depth-discussion-of-m-auto-iso-for-canon-slrs, if anyone is interested. The last 3 paragraphs seem to address the 'semi-automatic' scenario well - very interesting as it seems it the camera includes the focal length you are shooting at, to help it make the decision in 'AV + Auto ISO mode'. Pleasantly surprised as I didn't realise it was that sophisticated!!
p.6 #16 · Tamron 150-600 AI Servo sequential shots only
I nearly always use Tv mode and auto ISO, since it mean on less thing to worry about when the action's on and light levels change due to say a passing cloud or subject moving from light to dark background. It allows you to use EC too. The only problem is on non 1 series lenses if you are using a very fats lens, camera will select fastest aperture to give lowest ISO first, so you can have very small DoF. On the 1 series you can limit max aperture, so if I was using 300 f/2.8, I might want to ensure for BIF's I always use f/5.6 as my max. 1D X has foxed broken M mode and auto ISO and now you can also use Av mode, as you can set a minimum shutter speed up to 1/8000. SO I'll probably use Av mode and M mode more often now on that camera. But on 5D III I'll use Tv mode and pray most of the 1D X FW 2 updates are passed down the food chain eventually.
p.6 #17 · Tamron 150-600 AI Servo sequential shots only
Yes, realised there is quite a lot written on the topic, so apologise for railroading this thread!! To get it back on topic, I managed some shots today as finally had some sun!! Will upload and post in the next day or so, but think (on the 7D) the servo issue might become a problem when shooting things moving through distances quickly. So a bird flying toward/away would be an issue, whereas from one side to another not so much so? Definitely not right though - and I've not heard anything back from Tamron HQ in Germany yet, so they'll be receiving another email tomorrow...
p.6 #20 · Tamron 150-600 AI Servo sequential shots only
Imagemaster wrote:
Hey Don,
Not sure if that was what I said, but if I did, it was wrong. Raise your ISO to as high is required to get your shutter speed up to 1/2000 sec. You should not have to use a higher shutter speed than that.
It looks like after the first heron shot that you are starting to lose focus slightly. I am guessing that the AF in AI Servo probably works better at 256mm than 600mm. My 7D would simply not work at 600mm.
Tony
Tony,
By the fufth shot the focus was completely gone but can't blame it on the lens as I started shaking which I often do.
