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| Bird Photography 2020 - Page 11 | |
| Replacing the previous Bird topic of 2019. | Rating: 
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| Posted: Sat Mar 7th, 2020 05:28 |
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101st Post |
Graham Whistler
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Slightly better comp of the Redshank pix.
____________________ Graham Whistler |
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| Posted: Sun Mar 8th, 2020 07:11 |
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102nd Post |
Graham Whistler
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I have posted this to show how big a blow up the above shot was and same for Curlew pixs. As I have said many times all you need for birds is a Nikon D850 and the 500mm f5.6 A-FS PF Lens. As previous Chichester Harbour pixs this good winter late pm light sun with haze 1/800 sec F13 800 ISO one spot focus AF-C hand held with VR on.
____________________ Graham Whistler |
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| Posted: Sun Mar 8th, 2020 08:38 |
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103rd Post |
jk
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Graham, looking at your exposure data, you are using 1/800 sec, F13, 800 ISO. F13 is possibly suboptimal for diffraction effects. Or do you think that effects are not really noticeable until f16. https://www.slrlounge.com/diffraction-wedding-photography-something-to-worry-about/ I try to adjust my exposure so that I use f8 or max f11. I know f13 is very close to f11.  Also as a rule of thumb I use max f8 on APS-C (DX) compared to f11 on FF (FX) What are your thoughts?
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Mar 8th, 2020 09:34 |
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104th Post |
Graham Whistler
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You made me go back and look at the info for the days shoot. Early in day I was getting F13 and was on 800 ISO but these shots as posted were as light was going and were at 1000 ISO still 1/800 sec (I nearly always shoot shutter priority and fixed ISO) sorry as posted shot: F11 or F10. With this lens I am very happy if I can get to f16 as dof is a major problem with birds and very long lenses as I was shooting all day with 500mm plus x1.4 = 700mm. I agree with shorted focal length lenses F11 is best news but deffraction with small f nos does not seem to be the same problem is was with the older lenses in film days. Then when I did a lot of studio work with 4x5 and 8x10 view cameras I often shot at f32 and got very sharp pix but it was with long focal lenses and the hole is much larger for the same f no with a small camera! Deffraction is the bending of light round a small hole is about tec as I get! I was talking to another serious bird photographer and was interested to hear he always shoots with aperture priority and auto ISO. (He is a Canon person!!!)
____________________ Graham Whistler |
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| Posted: Sun Mar 8th, 2020 13:11 |
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105th Post |
Eric
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Graham Whistler wrote:You made me go back and look at the info for the days shoot. Early in day I was getting F13 and was on 800 ISO but these shots as posted were as light was going and were at 1000 ISO still 1/800 sec (I nearly always shoot shutter priority and fixed ISO) sorry as posted shot: F11 or F10. With this lens I am very happy if I can get to f16 as dof is a major problem with birds and very long lenses as I was shooting all day with 500mm plus x1.4 = 700mm. I agree with shorted focal length lenses F11 is best news but deffraction with small f nos does not seem to be the same problem is was with the older lenses in film days. Then when I did a lot of studio work with 4x5 and 8x10 view cameras I often shot at f32 and got very sharp pix but it was with long focal lenses and the hole is much larger for the same f no with a small camera! Deffraction is the bending of light round a small hole is about tec as I get! I have tended to err on the side of caution at f11 even with the 500mm. As a result on small bird shots the dof hasn't always been enough. I have also been concerned going smaller aperture would mean compromising on shutter speed or ISO....both of which bring their own potential negative effects. I suppose at the end of the day (or even on a UK winter midday 😆) we have to decide which of the three 'priorities' is going to be sacrificed. (ie Shutter speed, aperture or ISO) I often set the camera to Manual and the ISO to auto. I then have selection choice of both shutter speed and aperture... at the expense of the ISO, which is less of a concern with the D850. Even so, something still has 'to give' if lighting is poor....... 1/400th (too slow for small bird) @ f11 (too wide for a small bird) and 4500 ISO (starting to show noise even with the D850). Perhaps the answer is not to bother taking the photo, if this is all the light allows you.  
____________________ Eric |
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| Posted: Sun Mar 8th, 2020 14:27 |
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106th Post |
jk
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Still plenty of detail there for a good A4 print, Eric.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Mar 8th, 2020 16:22 |
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107th Post |
Iain
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Interesting reading this as I use f5.6 to f8 for my wildlife shots.
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| Posted: Sun Mar 8th, 2020 17:00 |
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108th Post |
jk
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Being a geeky sort of nerd I have an app and it says in general terms that diffraction effects start for FF at f11 and for APS-C at f8. Of course unless you are nerdy enough to go and shoot with each lens on each format at every aperture in 1/3 stop increments then look in pixel peeping mode you probably wont notice it or even see it in real life use!
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Mar 8th, 2020 17:30 |
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109th Post |
Eric
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Iain wrote:Interesting reading this as I use f5.6 to f8 for my wildlife shots. I suspect there are many situations when the critters are big enough or distant enough to give sufficient dof at wider apertures. It's really only an issue using the 500+1.4xtc at close range. 720mm focused at 5m and f11 means just 30mm dof. 
____________________ Eric |
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| Posted: Sun Mar 8th, 2020 17:45 |
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110th Post |
Robert
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Eric wrote:Perhaps the answer is not to bother taking the photo, if this is all the light allows you. Well, perhaps but this is a superb image, in my opinion at least, it's spectacular and finely detailed, while you are complaining about some aspects, my only complaint is the 'camera shake' effect on the large tree in the background. That I find objectionable, never mind the bird, that's fine, look at the background. I assume it's a 'feature' of the PF lens causing this effect, I never seen this with conventional telephoto's, or never noticed it anyway... I imagine a quick application of a blur brush would fix it. I think you are all too critical of the minutiae in these images while missing the 'whole picture' occasionally. My eye is drawn instantly to the apparent camera shake on the tree, which it obviously isn't! As for enlarging it to A4, I just viewed it full width of my 27" iMac, the bird was 14" long from tail to tip of beak and it still looked superb. I guess that's twice to three times life size?
____________________ Robert. |
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