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 p.12 #17 · A7/A7r - performance with WA RF lenses | |
wfrank wrote:
A bit of hope is either that the Australian Sony team got it wrong so that the A7 also have it, or, the lesser pixelated A7 dont mind steep angels too much.
Makten wrote:
Yeah, very much of the information on these cameras seems to come from that single video, and is nowhere else to be found. Never, ever trust a salesperson! 
Edit: I don't care about mild color casts either, but COF and smearing (perhaps the same thing?) means no-go. 35 mm lenses should be OK if the sensor is reasonably well designed for far-back exit pupil lenses. The shortest I'll want to get is ~24 mm, which could be worse.
I posted this in the "Our prayers have been answered" thread...
http://www.imaging-resource.com/camera-reviews/sony/a7r/
Sensor.
The Sony A7R is based around a 36.4-megapixel, RGB Bayer-filtered, Exmor CMOS image sensor with approximately the same dimensions as a 35mm film frame. Total resolution is 36.8-megapixels. Sensor size is 35.9 x 24.0mm.
Unlike that of its sibling, the A7, the Sony A7R's sensor doesn't include on-chip phase detection autofocus pixels. However, it does include a low-pass filter-free design for maximum resolution (at the expense of possible moiré), and it features gapless microlenses whose position has been tuned to avoid image quality issues with light arriving at high incidence angles, as in the corners of the image.
According to Sony, the A7R's image sensor will yield the highest image quality of any Alpha-series camera to date.
http://www.imaging-resource.com/camera-reviews/sony/a7/
Sensor.
The Sony A7 is based around a 24.3-megapixel, RGB Bayer-filtered, Exmor CMOS image sensor with approximately the same dimensions as a 35mm film frame. Total resolution is 24.7-megapixels, and the design includes on-chip phase detection autofocus pixels. Sensor size is 35.8 x 23.9mm....Show more →
Nothing was said about micro lenses with the A7.
Makten wrote:
I'm mostly interested in a really good 35 mm lens for the α7 or α7r, but I have a hard time choosing what to aim at, regardless of price. Here's a little list I compiled, where the * indicates that I've tried it myself:
- *ZM 35/2.8 – Fantastic lens with great 3D and smooth bokeh, but a tad slow.
- ZM 35/2 – Seems great and affordable, but gives occasionally harsh bokeh wide open. Optimized for non-closeup work.
- CV 35/2.5 – Small and sharp, but only in the middle and with great bokeh. Slow max speed.
- *CV 35/1.4 – Acceptable, old school rendering and sharp enough, but gave brutal curvature of field on M8.
- CV 40/1.4 – Probably much like the above, but seems better overall and with less COF.
- *CV 35/1.2 – Best bokeh around, but hazy wide open and a bit bulky. Very allround characteristics though.
- *Summicron-C 40/2 – Old school rendering with very nice "glow" wide open (totally different from the 35/1.2 WO haze) and very sharp stopped down from f/2.8, but gives almost as bad COF as the CV 35/1.4. Probably one of the smallest RF lenses ever.
- *Summarit 35/2.5 – A tad better than the ZM 35/2.8 colorwise and with similarly great bokeh. The only downside is lack of speed and the price.
- Summicron 35/2 ASPH – Mixed reviews but is probably awesome, if one can afford it. Sharper WO than the ZM, but lesser so stopped down.
- Summilux 35/1.4 ASPH – Expensive as hell but good as hell, although sharpness doesn't seem uniform across the frame even stopped down (wavey MTF). The FLE version is sharper WO but gives harsher bokeh and perhaps even more wavey MTF.
I probably forgot a lens or two.  There are Canon RF 35:s that I know nothing about....Show more →
I have a few Canon lenses, the 35/2.8(second from the left) is quite sharp on my NEX-7, I had some smearing with it, but it turned out that there was something on the rear element, it took 4 attempts at cleaning to cure it, colors are vivid, and it's sharp, it should be interesting on the A7R, the black Canon 35/2 is supposed to be very good, but I have no clue how it will do on my 7 or the 7R.
2 lenses I'm really looking forward to using are my FD SSC 24/1.4 Aspherical and 35/2.8 Tilt/Shift, the anticipation is killing me.
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