A7r with RF glass

[rbelyell]

charlie youre whistlin' in the wind if you think even a plethora of real world samples are going to sway the minds of those whose wallets and psyches are tied to the world of M.

having said that, while there are tremendous and groundbreaking positives, like any other camera, there will be tradeoffs. i personally dont understand how WA biogons are going to perform up to snuff; hope i'm wrong, but i dont expect 28-21 to hit it out of the park. maybe they dont have to, maybe a double is good enough. and a loud shutter is a loud shutter. i think the foibles should be embraced because imo the equation is overwhelmingly over-balanced on the plus side. trying to argue out any possible negative is ultimately self-defeating.
tony

 

[djonesii]

downloaded a Lightroom plug in ....

downloaded a Lightroom plug in ....

After doing some analysis, it would seem that I'm around a 28 or 50mm shooter when I look at the plots from my "casual" type shots.

So, if I were to want to slap some RF glass on the A7 that I won't buy just yet, it seems the CV will have me covered!

28mm 1.8 and any number of 50mm.

May as well look at what I actually might shoot!

Dave

 

[YYV_146]

Speaking of the 16-18-21, does Leica still sell new ones without the multi-finder? Last time I saw one listed seems like long ago...

FYI the WATE has an exit pupil so far away that some SLR SWs have closer ones! I'm considering one, might well be the last new m lens I'll ever get.

 

[willie_901]

Apparently the A7s are so good the laws of physics no longer apply. It seems the A7s are the first devices in history that contradict quantum mechanics. SONY's engineers deserve a Nobel Prize as scientists have been trying to find experimental evidence that is inconsistent with QM for about 90 years.[/QUOT

I don't think QM can account for miracles,

I could not agree more. However miracles are not experiments. By definition a miracle can not be repeated by anyone, any where, over and over again.

Unless a lens-sensor combination has unusually low resolution at wide apertures, the resolution always is degraded once the aperture narrows to a certain point. Ironically, a sensor with very high resolving power degradation due to diffraction will be more obvious than one with a lower resolving power.

Like every other high-quality contemporary digital camera, the A7s will be affected by diffraction.

 

[uhoh7]

Unless a lens-sensor combination has unusually low resolution at wide apertures, the resolution always is degraded once the aperture narrows to a certain point. Ironically, a sensor with very high resolving power degradation due to diffraction will be more obvious than one with a lower resolving power.

I don't think the same is true for a sensor with more MP, in practice, meaning once the images are downsized. I think a diffracted image may appear more crisp than a lower MP sensor. Maybe. I could be hallucinating. The processor might be effecting. Or now some are saying it's the lack of AA filter.

Anyway I could be totally wrong about this contention, but at the moment it fits my observations.


Here's a raw with cv15
https://dl.dropboxusercontent.com/u/4999128/DSC00156.arw

 

[uhoh7]

sorry this one was old.

 

[35photo]

Wondering if the red vignetting can be corrected with the in camera lens correction adjustment?

 

[uhoh7]

Wondering if the red vignetting can be corrected with the in camera lens correction adjustment?

Here is what I'm told:

You add the sony lens profile app by DLing to camera. The colorshift correction will be written to both raw and jpeg--though not all editors may see this: the sony one does, however the vignetting is written to jpeg only.

 

[rbelyell]

Maybe the A7(R) is not the camera to use ultra-wide angle rangefinder lenses. So what? There is enough to chose from in rangefinder-land from 28mm to around 90mm including some legendary lenses in 35 and 50mm focal length. Good enough for me.

that was exactly my point.

 

[NazgulKing]

Some variation there, eh?

Leica seems to "diffract" most

but it could be focus

anyway everyone can judge for themselves

No. It is not a consequence of focus. It is because the rays of light are not telecentric enough and hence leads to cross talk between pixel sites. If one does the same shot on the Leica M9, you also get some color shift, just not as much. If one subscribes to Sean Reid's website, he also gives the raw unadulterated shots without the 6bit correction. Even the Leica 50mm Summicron has some color shift at the extreme edges that only goes away after 6bit profile correction.

 

[uhoh7]

that was exactly my point.

well the jury is still out on that.
CV12 is not that terrible.
zm18 is reported to have no smearing: I have the lens so eventually we will really know.
cron 28 reported sharp across the frame at 5.6: I'll be able to check that too.

referring to A7r

also cv21/1.8 reported excellent.

nocti raw:

ノクティルックスの魔法 by bebegarden, on Flickr

 

[burancap]

Frankly, I have yet to see anything that a Merrill can not already do, better.

 

[35photo]

Here is what I'm told:

You add the sony lens profile app by DLing to camera. The colorshift correction will be written to both raw and jpeg--though not all editors may see this: the sony one does, however the vignetting is written to jpeg only.

So did you not get color shift on the RAW file? Wondering how Lightroom 5 would react..?

 

[uhoh7]

So did you not get color shift on the RAW file? Wondering how Lightroom 5 would react..?

I don't have the camera yet.

There are plugins now for LR 5 and these issues but I need to get up to speed on which etc.

It might be the case that you would have to import the raw into sony editor then export to LR, if you want profile color shift correction.

The camera can shoot raw+jpeg as well.

PS A7r + SEM21 @ f/8
https://www.dropbox.com/sh/em84bs86uh5rgd4/j8zJ7BdQxm?lst#lh:null-SEM21 f8.jpg

elmarit 28 asph @ f/8
https://www.dropbox.com/sh/em84bs86uh5rgd4/j8zJ7BdQxm?lst#lh:null-ELT28 f8.jpg

 

[kxl]

One more thing that piques my interest in the A7R is a desire to re-engage in macro photography (which I used to do frequently). The thought of mounting ultrasharp macro lenses on a body with that sensor and that many MP's is incredibly tempting; I'm envisioning LARGE photos of macro captures on my home office walls.

 

[uhoh7]

Many images with each link 🙂

cv 21/1.8 a7r

cv 28/1.9 a7r

cv 35/2.5 A7r

M-hex 90 + A7r

CV 50/1.5 A7r

 

[rbelyell]

i repeat, biogon biogon, where for art thou biogon??!! ignore biogon owners at your peril!

 

[YYV_146]

i repeat, biogon biogon, where for art thou biogon??!! ignore biogon owners at your peril!

Maybe everybody just assumed that Biogons are going to be terrible on digital...although this statement really is not true, at least not for the 35mm biogons.

 

[rbelyell]

how do you know that victor? i bought a 35mm biogon just for this cam and have no idea about its actual performance! its pretty freaking awesome on my gxr, but i HATE 50mm pov!
tony

 

[judsonzhao]

Maybe everybody just assumed that Biogons are going to be terrible on digital...although this statement really is not true, at least not for the 35mm biogons.

Well I'd say it's true for 35/2 biogon, even on M9, glad to show comparison shots if demanded