Sony NEX 7 - AA filter - Printable Version +- Opticallimits (https://forum.opticallimits.com) +-- Forum: Forums (https://forum.opticallimits.com/forumdisplay.php?fid=4) +--- Forum: Just Talk (https://forum.opticallimits.com/forumdisplay.php?fid=17) +--- Thread: Sony NEX 7 - AA filter (/showthread.php?tid=2726) |
Sony NEX 7 - AA filter - Klaus - 01-06-2012 I just had a look at the Zeiss 85 on the NEX 7. Just like the NEX 5 it has an asymmetric AA filter - weak to non-existent horizontally, comparatively stronger vertically. All in all it can be regarded as relatively weak. What I can see already - the center is now much more emphasized compared to the border/corner region. We will have get used to that ... Sony NEX 7 - AA filter - PuxaVida - 01-06-2012 [quote name='Klaus' timestamp='1325854304' post='14405'] ... Just like the NEX 5 it has an asymmetric AA filter - weak to non-existent horizontally, comparatively stronger vertically .... [/quote] And any ideas what is the reason for that? Serkan Sony NEX 7 - AA filter - anyscreenamewilldo - 01-06-2012 [quote name='Klaus' timestamp='1325854304' post='14405'] I just had a look at the Zeiss 85 on the NEX 7..... What I can see already - the center is now much more emphasized compared to the border/corner region. We will have get used to that ... [/quote] emphasized? as in sharper? less filter, or ..... well wait and see, but i don't like the sound of that on cropped Sony NEX 7 - AA filter - Brightcolours - 01-06-2012 [quote name='asnwd' timestamp='1325860346' post='14418'] emphasized? as in sharper? less filter, or ..... well wait and see, but i don't like the sound of that on cropped [/quote] Bigger difference in measured results is my guess... Higher res. figures for the center, showing the borders to be weaker sooner. Sony NEX 7 - AA filter - anyscreenamewilldo - 01-06-2012 [quote name='Brightcolours' timestamp='1325863072' post='14420'] Bigger difference in measured results is my guess... Higher res. figures for the center, showing the borders to be weaker sooner. [/quote] yes i suppose - but i didn't want to hear that :-) .... still, i already have 24mps, so i'll just keep on lifting those weights then Sony NEX 7 - AA filter - Guest - 01-06-2012 It would be interesting to do a quick test to see how much the adapter impact image quality - if possible. Sony NEX 7 - AA filter - Klaus - 01-06-2012 [quote name='you2' timestamp='1325877593' post='14425'] It would be interesting to do a quick test to see how much the adapter impact image quality - if possible. [/quote] Actually I did a comparison between the two with the 85mm f/1.4 @ f/1.4 because I wasn't too sure about the values. However, there wasn't really a substantial difference. The centering of the tested sample wasn't great so the error margin is quite high though. Eventually I will give it a try with a more "stable" lens. Sony NEX 7 - AA filter - waardij - 01-12-2012 Hi, I was wondering if you are sure if the cause is a unidirectional AA filter? Can it not be this effect is a result of the conversion algorithm? Did you ever see a camera without AA filter that had the same resolution vertical and horizontally? Sorry for all the questions, but I have compared some NEX-5n images with results from a M9 an did not see much difference, which makes me wonder if there is any AA filter at all in the NEX. Thanks Sony NEX 7 - AA filter - Klaus - 01-12-2012 [quote name='waardij' timestamp='1326377813' post='14809'] Hi, I was wondering if you are sure if the cause is a unidirectional AA filter? Can it not be this effect is a result of the conversion algorithm? Did you ever see a camera without AA filter that had the same resolution vertical and horizontally? Sorry for all the questions, but I have compared some NEX-5n images with results from a M9 an did not see much difference, which makes me wonder if there is any AA filter at all in the NEX. Thanks [/quote] Sure, there are many cameras with an asymmetrical AA filter. The NX 200 comes into mind, also the NEX 5 and the old Pentax K10D. Sony NEX 7 - AA filter - Guest - 01-12-2012 [quote name='Klaus' timestamp='1326383214' post='14813'] Sure, there are many cameras with an asymmetrical AA filter. The NX 200 comes into mind, also the NEX 5 and the old Pentax K10D. [/quote] Saw a couple of diagrams where it was clear that bi-directional AA filter requires 2 layers, one for each direction. Maybe just 1 layer of AA filter is cheaper or thinner while still doing the job. |