There is exif in loxia lenses. I've also read that a Leica adapter exists which will transmit exif for chipped lenses.
justruss wrote:
Agreed... that Steve Huff LOVES everything he touches, at least at first, and at least as the machine of affiliate links are firing on all cylinders. I wouldn't expect him to be in the mindset to notice or put much stock in these sorts of niggles... until something that fixes it comes out.
BTW, are there focus confirm or EXIF chips available for sony E-mount? I'm not interested in actually using them to confirm focus, but I'd love to have focal length in the files for review and to let IBIS know what it's dealing with.
Might have something to do with refresh rate is faster. Or maybe even better gain. Possibly more intended for video are some immediate thoughts. My bet and I'll find out today if the low setting is the default. My other guess is many of these reviewers are just picking up the camera and start shooting without setting up there cameras first.
Mine comes today and I'll try my VC 15mm if someone does not get there's first to check this out.
Again take what you are reading with a grain of salt. Not to bash anyone but again we have folks inexperienced with Sony systems out here blogging away. This may take a couple weeks to get the correct answers and solutions but seriously be carefull of the panic attack posts. The menu systems are very complicated and not everyone knows how to set these things up. Actually way to complicated. I turn a lot of stuff off. there are a lot of experienced users here on the Sony forum so let's hear from some of them as well.
Aug 05, 2015 at 04:27 AM
Steve Spencer Offline • • • • • • • Upload & Sell: On
davewolfs wrote:
There is exif in loxia lenses. I've also read that a Leica adapter exists which will transmit exif for chipped lenses.
To be precise the Leica M adapter that provides some EXIF data is made by phigment who posts on the alt forum from time to time. It is based on the Leica M codes and reports what the lens is coded as and approximate aperture like lenses on the M240.
colincarter46 wrote:
Hi, no it was the sony / zeiss 35 f1.4.
Thanks, this confirms that the EVF can work quite well and there is nothing about the hardware itself, such as too much compression that is making an inherently bad image. So it is not the problem that was seen in live view with the D800.
It's being reported on the dpreview thread that the max focus magnification available for the A7rII is 12.5x. I assume that is in stills mode instead of movie. Based on this I did a bunch of correlation and math:
Based on the above, the original A7 series cameras show 512 horizontal pixels at max magnification on the LCD/EVF. To confirm that this is actually a 1:1 view, I took a photo with my A7s and then took a photo of the A7s LCD while viewing that same scene at max magnification (8.3x on A7s), then loaded both the actual photo and photo of the LCD into PS and compared the FOV at 1:1 and confirmed that the A7-series max magnification is 1:1, as shown here:
This relationship allows the 1:1 max magnification view to fit on the LCD's horizontal resolution of 640. Since the EVF has a higher resolution vs the LCD but both show the same FOV at max magnification, this means the view on the EVF is digitally magnified (interpolated) on A7-series cameras but both are still using 1:1 pixels from the sensor to generate the view based on the visible clarity. Good so far...
Based on the above numbers, the max focus magnification of the A7rII *should* be 15.57x (7974/512), but is 12.5x based on user reports. If we presume the A7rII's max magnification is still showing a 1:1 FOV at max magnification, this means the resolution from which the 12.5x is based from is 6400 horizontal pixels (12.5 * 512) instead of 7974 pixels (15.57 * 512). This doesn't really tell us what resolution the camera is sampling from to produce those 6400, so there could be some upsampling from an even lower resolution, ie such as the theory that the 4K video feed is being used and then upsampled. Nevertheless I think it's telling that the max magnification relationship has changed on the A7rII and this implies a different technique is being used on the A7rII to generate the magnified view.
snapsy wrote:
Nevertheless I think it's telling that the max magnification relationship has changed on the A7rII and this implies a different technique is being used on the A7rII to generate the magnified view.
As you wrote, if the max magnification is only 12.5x, the image is being interpolated from a lower resolution sample. (6400 pixels). There is definitely a new technique employed here but is still unclear how much that affects magnification IQ.
Perhaps it's a trade off. We get more speed and lose a little IQ.
If setting the display to high quality doesn't at least match the A7r, it will be seen as a failure, hopefully there is some room in the FW to fine tune the process.
Still too early to declare anything, we need at a minimum a group of trusted/competent regulars to come to a consensus.
It would be nice to have Sony come fourth with some info on how the system is designed.
Aug 05, 2015 at 11:43 AM
Steve Spencer Offline • • • • • • • Upload & Sell: On
Well Guy (GMPhotography) and Phillipe (philter) are both likely to let us know what they have found today, so we won't have to wait too long. I am sure we will have more voices within a couple of days.
Im not seeing any issue whatsoever. Going from the 35 1.4 Zeiss /Sony to the CV 15 which maybe the hardest lens to focus manually since it has such large DOF. At 5x it looks very good and at 12.5 it looks very good. And yes the default is set to standard so make that change to high quality in the last top tab on your right than tab 2 than display quality. Im going to run outside and see if its the same in low light
GMPhotography wrote:
Im not seeing any issue whatsoever. Going from the 35 1.4 Zeiss /Sony to the CV 15 which maybe the hardest lens to focus manually since it has such large DOF. At 5x it looks very good and at 12.5 it looks very good. And yes the default is set to standard so make that change to high quality in the last top tab on your right than tab 2 than display quality. Im going to run outside and see if its the same in low light
I don't have the A7r but trying the A6000 now
Thanks. Does this include subjects at far distances like distant foliage? Many times even poor LV implementations are workable for high-detail near subjects since they'll fill a larger percentage of the frame. Can you also check vertical vs horizontal detail as sometimes one if affected more by interpolation than the other.
snapsy wrote:
Thanks. Does this include subjects at far distances like distant foliage? Many times even poor LV implementations are workable for high-detail near subjects since they'll fill a larger percentage of the frame.
I wouldn't expect him to be in the mindset to notice or put much stock in these sorts of niggles... until something that fixes it comes out. 