digitalpimp
Senior Member
This is one type of conversation I can never ever follow.:bsmilie:
Three new full frame cameras in the next 12-18 months?
- Thread starter digitalpimp
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rasdeep
New Member
it is not true for the e mount.. the kit lens is still the 18-55 so i doubt it has diffraction-limited resolution at f5.6. i guess those going for 7 will be wondering why it does not give more details compared to the 5n.
ya.. i dont do much large printing nowadays so i just go by pixel peeping..
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It's physics... and like Einstein said, it's all relative.
So yeah, diffraction becomes noticeable at larger apertures as pixel density increases and thus sensor site size decreases... But it also all depends on whether you're a 100% pixel peeper obsessed with ultimate sharpness or actually print your works.
Well, we're talking about the new full frame sensors here... And by the way, the new batch of 18-55 lenses is better than the old one, and Sony re-arranged the microlens array on the sensor.
And YES, the NEX-7 DOES give more details than the 5N, at least up until about f/8.
rasdeep
New Member
oh really? that has yet to be proven so will ahve to wait for MTF results
i'm still not convinced rearranging the microlens help with diffraction and how that changes the way it capture the airy disk?
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It can by reducing the gaps between the microlenses, and also changing the curvature of the microlenses to better capture the light impacting at oblique angles.
Sure, we can wait for the MTF results, I'll base it on my own test shots when I played with the NEX-7.
digitalpimp
Senior Member
It's physics... and like Einstein said, it's all relative.
So yeah, diffraction becomes noticeable at larger apertures as pixel density increases and thus sensor site size decreases... But it also all depends on whether you're a 100% pixel peeper obsessed with ultimate sharpness or actually print your works.
Good to know I'm still flunking physics in the real world... Pfft.. But hey, ignorance is bliss.
Kidding aside, I know about diffraction. It's just that I tell it in layman's way.
I'll vouch for that ! ... the 18-55 that came with the 5N is definately better compared to the 18-55 that came with the earlier 5.
Seriously? Shouldn't Sony named it differently if the new 18-55 is not the same as the old one?
Otherwise how can customer tell the difference between the old and new lens, e.g. if you're buying just the lens or second-hand ...
Maybe call it SEL1855N?
Seriously? Shouldn't Sony named it differently if the new 18-55 is not the same as the old one?
Otherwise how can customer tell the difference between the old and new lens, e.g. if you're buying just the lens or second-hand ...
Maybe call it SEL1855N?
I dunno if it's due to the coating or what, I was at my sister's place, she has the 5 and was complaining it doesn't give the colors and looks of my 5N.
Long story, short ...somehow, we swopped our 18-55 kit lens and I immediately noticed there is a slight differences on my 5N (color abit muted, softness on the corner) on the same settings, needless to say, I has to wrestle my kit lens back from her.
It's not heaven and earth different and most PnS shooters won't be able to tell the differences but if you've spend some time playing with CZ gear, you'll notice.
It's not uncommon for lens makers to improve on their products and not change the name, e.g: the Minolta 70-210 F4 beercan, there is at least 3 versions (1) Magenta (2) Reddish (3) Greenish cast on the front element. Canon however has wonderful categorisation of their lense, you'll often find Mk I, MkII, Mk III, etc versions of the exact same lens, the later version may not necessarily be better if they are seeking to make the lens cheaper.
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rasdeep
New Member
http://www.photozone.de/sony-alpha-aps-c-lens-tests/543-sony1855f3556nex
i've checked out the mft for the stock lens and it is actually peaked at f5.6 on all ranges.. the wider end seems to have better performance than the tele end but they are pretty close anyway.. the sweet spot for the lens is between 18-24mm with highest lw/ph.. diffraction starts to have effect after f8 which is as expected. but do note that the test were done with a nex-5
i do not think any of these sites actually do testing on different versions of the lens especially when the sony does not even indicate there is a change. however, im sure the change is transparent to consumer but it is also possible that they have improved and tightened the tolerance in their manufacturing processes hence the newer kit lenses show better performance.
i've checked out the mft for the stock lens and it is actually peaked at f5.6 on all ranges.. the wider end seems to have better performance than the tele end but they are pretty close anyway.. the sweet spot for the lens is between 18-24mm with highest lw/ph.. diffraction starts to have effect after f8 which is as expected. but do note that the test were done with a nex-5
i do not think any of these sites actually do testing on different versions of the lens especially when the sony does not even indicate there is a change. however, im sure the change is transparent to consumer but it is also possible that they have improved and tightened the tolerance in their manufacturing processes hence the newer kit lenses show better performance.
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