The "New Gear/Willy Waving" thread

D.P. said:
It's that big likely to achieve certain optical qualitiies.

As has been divulged a million times, loosing the mirror doesn't magically make lenses smaller, except with the potential of a 35mm prime (doesn't have to be made retrofocus).


What does magicallly make lenses small is diffraction optics, which I so far limited nikon and canon. That alone pretty much makes the A7 redundant for me the nikon 300mm PF is tiny!
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What I don't understand is why Sony chose those optical qualities they could have made a very sharp contrasty 50mm f1.8 that was much smaller, loads of other companies do. and in keeping with the compact body yet they chose to make a massive great big thing and negate the body size advantage all together!
 
a1ex2001 said:
What I don't understand is why Sony chose those optical qualities they could have made a very sharp contrasty 50mm f1.8 that was much smaller, loads of other companies do. and in keeping with the compact body yet they chose to make a massive great big thing and negate the body size advantage all together!
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I suspect that the smaller lenses are still a little bit of a compromise between quality and size or perhaps it makes something of that quality easier to manufacture?
 
Phal said:
I suspect that the smaller lenses are still a little bit of a compromise between quality and size or perhaps it makes something of that quality easier to manufacture?
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Of course the smaller lenses are a compromise that's why all the best 50mm are pretty big but why would sony choose to chase ultimate quality in a compact system camera at the expense of compactness! If your going to carry that wacking great 50mm f1.8 you might as well be lugging a d750 and sigma art d1.4!
 
a1ex2001 said:
Of course the smaller lenses are a compromise that's why all the best 50mm are pretty big but why would sony choose to chase ultimate quality in a compact system camera at the expense of compactness! If your going to carry that wacking great 50mm f1.8 you might as well be lugging a d750 and sigma art d1.4!
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You'll have to ask them :D hehe
 
Just bought this little lot for £835 all new:

D7100 body
NIKKOR AF-S DX 55-300mm f/4.5-5.6G VR
NIKKOR AF-S DX 18-140mm f/3.5-5.6G VR
NIKKOR AF-S DX 35mm f/1.8G

As you can see in the listing comes with a few other bits an bobs such as spare battery, Nikon ML-L3 Remote Release and a bag ect..

http://www.ebay.co.uk/itm/171738097581?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT

Great price I think. I bought this only needing the body, battery and remote release, so will flog everything else which will make this a cheap purchase :)
 
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That's a damn good price,I'm looking for a 55-300 so will keep a eye out on the members market for the lens,I have just got a D7000 and love it,amazing camera and can only imagine the 7100 is better.
 
Yeah crazy price, i snapped it up :).

Will be putting it all back on ebay as soon as it arrives (minus the body, battery and remote release).

I already have a D5200 with the 18-55 lens. I'm gonna sell that too for around £300 (based on ebay prices) so basically my aim is to make the upgrade to the D7100 for as little as possible (or hopefully nothing).
 
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a1ex2001 said:
Of course the smaller lenses are a compromise that's why all the best 50mm are pretty big but why would sony choose to chase ultimate quality in a compact system camera at the expense of compactness! If your going to carry that wacking great 50mm f1.8 you might as well be lugging a d750 and sigma art d1.4!
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It may also be in part due to the short flange distance which causes much mre acute off-axis angles on the frame edge E.g. sensors work best if the light rays hit the sensor perpendicular to the sensor plane, but obvious for the frame edges the ray must be bent. With a shorter flange distance the rays must be bent even more, which A) causes big issues for the sensor and requires much more sophisticated micro-lens arrays to prevent specular reflections and color shifts, and B) the lens must be designed to present the sensor with increasing off-axis light rays while maintaining focus for different color wavelengths etc. Leica lenses mounted to the Sony can have big issues.


I also think the best way to handle autofocus is to go back to the screw drive system for mirror less cameras., e.g. Nikon's 50mm AF-D lens is much smaller than the AF-S lens almost entirely due to having to add focus motors into the lens. If you really want a small system you want a single focus motor in the camera, not one in every single lens.
Still, the ultimate limit is the image circle, focal length and aperture.




Interestingly there is $500 off the Sony A7 at the moment in the US and at the current price ($1200) is attention grabbing for a FF camera. I thought about it a little but it just doesn't really make sense once you start looking at the lenses, weights, prices. You invariably end up compromising on aperture (the 24-70mm is f/4.0, the 28-70mm is f/5.6, the 35mm prime is f/2.8) or focal length, e.g. 28mm instead of 24mm. I then looked at a D7100 with faster aperture lenses (Tamron 17-50mm f.2.8) and you can geta smaller, lighter system with the same light gather and DoF performance and far better auto focus for way less money.

The Sony FE lenses really are expensie. the 35mm f/2.8 is nearly 600 quid while the Nikon FF 35mm f/1.8 FX is 400. The Sony 55mm f/1.8 is over 600 while the Nikon 140, similar for te other lenses. What you save on a body you quickly loose on lenses.
 
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D.P. said:
It may also be in part due to the short flange distance which causes much mre acute off-axis angles on the frame edge E.g. sensors work best if the light rays hit the sensor perpendicular to the sensor plane, but obvious for the frame edges the ray must be bent. With a shorter flange distance the rays must be bent even more, which A) causes big issues for the sensor and requires much more sophisticated micro-lens arrays to prevent specular reflections and color shifts, and B) the lens must be designed to present the sensor with increasing off-axis light rays while maintaining focus for different color wavelengths etc. Leica lenses mounted to the Sony can have big issues.


I also think the best way to handle autofocus is to go back to the screw drive system for mirror less cameras., e.g. Nikon's 50mm AF-D lens is much smaller than the AF-S lens almost entirely due to having to add focus motors into the lens. If you really want a small system you want a single focus motor in the camera, not one in every single lens.
Still, the ultimate limit is the image circle, focal length and aperture.




Interestingly there is $500 off the Sony A7 at the moment in the US and at the current price ($1200) is attention grabbing for a FF camera. I thought about it a little but it just doesn't really make sense once you start looking at the lenses, weights, prices. You invariably end up compromising on aperture (the 24-70mm is f/4.0, the 28-70mm is f/5.6, the 35mm prime is f/2.8) or focal length, e.g. 28mm instead of 24mm. I then looked at a D7100 with faster aperture lenses (Tamron 17-50mm f.2.8) and you can geta smaller, lighter system with the same light gather and DoF performance and far better auto focus for way less money.

The Sony FE lenses really are expensie. the 35mm f/2.8 is nearly 600 quid while the Nikon FF 35mm f/1.8 FX is 400. The Sony 55mm f/1.8 is over 600 while the Nikon 140, similar for te other lenses. What you save on a body you quickly loose on lenses.
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Interesting point about the AF, it's always nice to pick up an old film camera like an Olympus OM series as the lenses are so small the OM 50mm f1.8 is tiny compared to most modern lenses yet optically fantastic.
 
Just had a nice delivery at work :)

16-35mm F4 L IS.

a0qBmoU.jpg

MIjnGOE.jpg

Been a while since I got some new glass! Just sneaked in a few test shots in the office, looks amazingly sharp all over! This is my first dive in to ultrawide angle territory, am really looking forward to it. The 24-105L will be staying at home for the foreseeable future.

Also my Marumi DHG Super Cicular Polariser arrived, it cost a bit more than I wanted to spend. But the reviews are gleaming for it.

bVV1rRR.jpg
 
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Cant even explain how much easier this makes using backdrop rolls!

DW0n3c.jpg
 
smr said:
Love mine, superb CPL.
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First time ever using one, a little surprised it's taken me this long really.

The clouds broke earlier this afternoon and I took it out for a spin, the effect on the sky is extremely pleasing and the way you can dial down or completely kill reflections is almost like magic. ;)

Can't say that I can see any obvious hues or casts at all. :)
 
2StepSteve said:
Just had a nice delivery at work :)

16-35mm F4 L IS.

Been a while since I got some new glass! Just sneaked in a few test shots in the office, looks amazingly sharp all over! This is my first dive in to ultrawide angle territory, am really looking forward to it. The 24-105L will be staying at home for the foreseeable future.
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Had mine for a couple of months now - it's a staggeringly sharp lens.
 
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