| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
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Graham Whistler wrote:
D500-D850 auto focus and holding focus in action both much the same. Noise on D850 is better and you can use higher ISO. A shown above, in youg starling pix, you can get large sharp images for D850 with fine detail and I would doubt if D5 would score so highly in this area but I did only get to use one for a day.
Yes, but my complaint with FX is that the AF points cover a much smaller proportion of the image than with DX. AFAIK that holds true between the D5/D850 and the D500.
It drive me nuts sometimes. I don't always, in fact I rarely want the point of focus in the centre of the image. I know you can acquire focus, lock then re-frame but I don't want the faffing about that entails especially with moving subjects.
The focus points on FX should have a similar distribution on FX as they do on DX, it seems like a cost cutting measure to utilise the same AF module on both formats.
Maybe it's just that they are a fixed dimension/area on both...but when overlayed it covers more of a DX sensor than it does on the larger FX?
Maybe my memory is playing up but I don't recall the focus point distribution on th D3 to be limiting in any way? As you say, if required you could focus and reframe. But I don't recall the frequency of that requirement to have ever been an issue.
Whilst the point is well made, I do wonder how often the D850 focusing range limits would be an obstacle in use? Tracking moving birds means 'get then in the middle and keep them there' for me. I never have time to compose in camera...and anyway focal length limitation invariably mean cropping to suit is always necessary.
Last edited on Mon May 28th, 2018 08:47 by Eric
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Eric