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| D400 rumours again - Page 7 | |
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| Posted: Wed Oct 31st, 2012 15:24 |
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61st Post |
Constable
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I can try the following at the weekend if the weather is half way decent (and if I get myself prepared for a trip to China on Tuesday) 1. D4 + 400mm f 2.8 ? 2. D800 + 400mm f 2.8 ? 3. D4 and D800 with 200 mm f2 and TC 2 III 4. D4 and D800 with 300 mm f2 and TC 1.7 II (I don't have a 1.4) i can probably borrow a D7000 to try with the above combination "It should be possible to plot IQ against cost." Err ... how? The cost axis is easy. What do we use as the objective IQ parameter? I can think of lots of possibilities, all of which involve playing with lots of expensive toys and which actually say nothing about the subjective viewing experience! Ed
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| Posted: Wed Oct 31st, 2012 15:47 |
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62nd Post |
Eric
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Constable wrote:I can try the following at the weekend if the weather is half way decent (and if I get myself prepared for a trip to China on Tuesday) I meant nothing more scientific than a simple ranking...that one 'looks' better than that one.
____________________ Eric |
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| Posted: Wed Oct 31st, 2012 16:04 |
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63rd Post |
Constable
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Oh, I see. You mean pixel peeking! OK ... Not really, but I suspect that we end up in a subjective area. 
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| Posted: Wed Oct 31st, 2012 16:48 |
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64th Post |
Eric
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Constable wrote:Oh, I see. You mean pixel peeking! Yup 
____________________ Eric |
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| Posted: Wed Oct 31st, 2012 17:20 |
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65th Post |
jk
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I find the DPReview shoot outs and tests very tedious and of little use in real life. Things like flare resistance and contrast seem to be untested items. These are of more use to the average person than the ability to resolve xyz lines in a chart in a studio.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Wed Oct 31st, 2012 18:05 |
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66th Post |
Eric
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I suppose if I was guessing then I might say for 600mm, the following IQ ranking might apply. The cost of each combo is shown and I have ranked the costs. 600 + D4............................................ = 11400.......1 600 + D800....................................... = 7900.......7 400 + D7000.................................... = 6500......8 400 + D4 + TC1.4............................. = 10700.......2 400 + D800 + TC1.4....................... = 8200.....5 300 + D4 + TC1.4 + crop................ = 8700.....3 300 + D800 + TC1.4 + crop........... = 6200.......9 300 + D7000 + crop ....................... = 4500......11 300 + D4 + TC2.................................. = 8300.....4 300 + D800 + TC2............................. = 6200.......9 200 + D7000 + TC2.......................... = 4200.......12 200 + D4 + TC2 + crop...................... = 8000......6 200 + D800 + TC2 + crop............... = 5700......10 From this list I would like to know ...do the D7000 + 200 + tc2 or D7000 + 300 + crop have significantly poorer IQ than the D4 & D800 combos? Because, despite the simplicity of using just an FX sensor and cropping ...the finance doesn't stack up???
____________________ Eric |
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| Posted: Wed Oct 31st, 2012 18:37 |
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67th Post |
blackfox
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the only really fair way would be to do identical crops of a set area and see what each combo is capable of .it would need to take into account changing light values though .a awesome task really
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| Posted: Thu Nov 1st, 2012 03:53 |
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68th Post |
jk
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When you bring in different bodies and their cost it really makes the situation very complex. I know that ultimately it does get driven by purchase cost otherwise there is no way to use! As an initial pass it may be easier to consider the best way to achieve a certain focal length. I did this before purchasing my 400mm f2.8 two years ago. I wanted to get to 600/800mm f5.6 whilst only considering the Nikon 200 f2.0, 300 f2.8, 400 f2.8 and Sigma 300-800 f5.6 zoom. The most effective cost solution was to get the Nikon 400mm f2.8, I think that the Nikon 200mm f2.0 is a great contender but using a x3 converter to get to 600mm was I thought pushing the envelope to its limit. The Kenko DG300 Plus x3 converter that I have is OK but its results when compared with images from the prime lens look distinctly soft. The whole situation is made more complex by the D4 and D800 being able to use f8 max aperture and still be able to AF, with other cameras this is limited to f5.6
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Thu Nov 1st, 2012 05:55 |
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69th Post |
Eric
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jk wrote: When you bring in different bodies and their cost it really makes the situation very complex. What it highlights to me is the significant cost required to get 600mm. 
____________________ Eric |
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| Posted: Sun Nov 4th, 2012 10:27 |
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70th Post |
Iain
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This was one of the reasons I went to Canon as there 400 f5.6 gives a cheap way to 600 + mm Nikon need a lens like that.
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