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General Photography Chat

Discuss and share your wildlife photography, filming and equipment

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MxM
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Re: General Photography Chat

Unread postby MxM » Sat Oct 26, 2013 4:16 pm

Hi huntsman

Yes, bif = bird in flight

Yes, high ISO means high noise but up to around 400 it is under control. Increasing ISO from 100 to 200 doubles your ss, 200 to 400 again doubles your speed. When there is sufficient light, always maintain as low an ISO possible while maintaining sufficient ss.

The 100-400 is at least quite fast with AF. Please do not use a UV filter with it, the hood protects the glass, the UV just enormously lowers IQ.

1/(2x1.6x400) = ss at least 1/1280 if shooting at 400 mm, 1/320 if shooting at 100 mm.

So, if using lens at 400 mm, set camera to Av, reduce f to minimum (5.6), set the camera to centre-weighted exposure (or spot for reasons mentioned in previous post), check your ss and adjust your ISO upwards to maintain the minimum ss mentioned above (or drop it if there is sufficient light).

Make more sense? Sorry, I am not always that good at explaining without a white board... :doh:
Moments by Mullineux Photography
Photographer, nature lover, birder

Follow my solo KTP photographic and birding TRAVEL TALE

Photograph all moments of beauty not to forget, but treasure them in your heart to remember

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huntsman
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Re: General Photography Chat

Unread postby huntsman » Sat Oct 26, 2013 9:23 pm

Thanks MxM -

That's very clear.. :thumbs_up:

One thing...should I be using the lens hood? I shoved it in my boot the day I bought the lens... :?
A bird in the hand...belongs in the bush!

Canon 7D / Canon 100-400mm 4.6-5.6 IS EF / Canon 28-85mm 2.8 EF

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MxM
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Re: General Photography Chat

Unread postby MxM » Sun Oct 27, 2013 10:27 am

ALWAYS use the lens hood. Have yet to, other than for spatial constraints in a small car, heard any reason not to. It significantly prevents stray light messing up exposures and undesired sun spots. Also, I find that the hood works as an effective protector for the big front element; when driving in KNP or other not so dusty places, I do not even replace my lens cape between shots but rely on the lens hood, makes getting that first shot of a sighting much easier!
Moments by Mullineux Photography
Photographer, nature lover, birder

Follow my solo KTP photographic and birding TRAVEL TALE

Photograph all moments of beauty not to forget, but treasure them in your heart to remember

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huntsman
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Re: General Photography Chat

Unread postby huntsman » Sun Oct 27, 2013 4:05 pm

Done! :thumbs_up:
A bird in the hand...belongs in the bush!

Canon 7D / Canon 100-400mm 4.6-5.6 IS EF / Canon 28-85mm 2.8 EF

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timbo
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Re: General Photography Chat

Unread postby timbo » Mon May 26, 2014 3:42 pm

Hey Huntsman

Read your post and thought I would reply even though it is quite old.

Have to agree with what others have been saying, always use a lenscap, overexpose for BIF, if you are using AV, perhaps try using your exposure compensation in order to compensate.

Sounds like what is happening is the camera is reading the sky for the light and not the bird and because the sky is brighter then the bird, it compensates to let less light in (ie, higher shutter speeds) and your bird looks dark.

Hope that helps a little
I try my best and that's what matters I hope.


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