p.96 #1 · Sony A7 and A7r Full Frame with Canon Lenses
I don't see anything different from other cameras I've own. If you oversharpen, specially with pushed shadows, yes you have "orange peel". Just like with any files, from a camera or not (we have exact same thing in Computer Generated images).
Maybe the fact that there isn't AA filter in front of the sensor make it more obvious, but anyway I sharpen less than with other sensors.
Sincerely, actually it doesn't bother me. But I'm not totally against a bit of film like noise, this is sometimes even better in large prints. The matte paper I use (Hahnemuehle Photorag) also have some structure which plays nicely with these files.
p.96 #2 · Sony A7 and A7r Full Frame with Canon Lenses
Samyang, the Korean manufacturer, initially announced five lenses in E-mount: the 14mm f/2.8, the Samyang 24mm f/1.4, the 24mm f/3.5 tilt-shift, the 35mm f/1.4 and the 85mm f/1.4. That’s a pretty decent setup of fast and versatile prime lenses, and especially in the tele and wide-angle sector it makes not much of a difference that these lenses weren’t designed for mirroless cameras in the first place.
p.96 #3 · Sony A7 and A7r Full Frame with Canon Lenses
RobDickinson wrote:
Samyang, the Korean manufacturer, initially announced five lenses in E-mount: the 14mm f/2.8, the Samyang 24mm f/1.4, the 24mm f/3.5 tilt-shift, the 35mm f/1.4 and the 85mm f/1.4. That’s a pretty decent setup of fast and versatile prime lenses, and especially in the tele and wide-angle sector it makes not much of a difference that these lenses weren’t designed for mirroless cameras in the first place.
There is an interesting excerpt about future adapters:
"I’m also told it’s not too difficult to make an adapter with an optical element to correct for sensor glass differences. Assuming there’s enough demand I expect someone will be releasing something like that in a few months. Sony lenses designed for FE mount certainly already take this into effect, which is why they seem better in the corners and edges."
_______
BTW: I am getting much improved corner results with new Metabones adapters I tried. I will post some samples soon.
Fred
There is an interesting excerpt about future adapters:
"I’m also told it’s not too difficult to make an adapter with an optical element to correct for sensor glass differences. Assuming there’s enough demand I expect someone will be releasing something like that in a few months. Sony lenses designed for FE mount certainly already take this into effect, which is why they seem better in the corners and edges."
BTW: I am getting improved corner results with new Metabones adapters I tried. I will post some samples soon....Show more →
Rogers post in the link about the A7R, adapters, lenses and everything else is very good and interesting.
p.96 #9 · Sony A7 and A7r Full Frame with Canon Lenses
I took the A7r out tonight with a Tamron 24-70VC EF-Mount. I was shocked at how well the corners performed, starting from f/2.8. Here is a full 36MP image (only slight level adjustment crop). This was hand-held @ f/5.6 1/20 24mm ISO 1600.
p.96 #10 · Sony A7 and A7r Full Frame with Canon Lenses
marc aurel wrote: A7R+TS-E 24: Internal reflections in Metabones III adapter and what could help - Part 2: how to do it
The geometry of the adapter is not very simple, so it's a bit tricky to do. Below are images of how it looks after the modification.
I made a cutting pattern which consists of several perts (see below). It's not absolutely precise, but it worked well. The jpg with the cutting pattern is scaled 1:1, so you could use it to try. Your own risk of course... ubt the self-adhesive velour i used could be removed without problems.
At first I covered every surface inside. Then I noticed that at a shift of more than 10mm the velours interfered with the optical beam path (the opening of the adapter is just about 36x24mm). When shifted up (rise), the lowest part of the image bottom went darker. When shifting down (fall), it went darker on top.
So I took off the velour on one surface (marked green in the cutting pattern), but only the one that interfered with the shift up (cause i don't use more than 10mm of shift down). The problem was gone and it didn't visibly change the image quality. Either this was not the problematic surface, or it is sufficient to treat most of the surfaces to prevent a ping-pong-effect of reflections. Image 2 shows how that looks. You can also see that - despite of the matte black finishing - the metal does reflect.
Maybe it's not to everyones taste do such things - but now i get the best image quality available for this sensor size when shift is needed.
I've been thinking about your mod, and the fact that the full shift cannot be used really bothers me, as I like to do stitched panoramas with full shift in both directions.
As others here I've been experiencing nasty reflections with the Metabones Mk III adapter, mostly in very high contrast situations (light against dark background).
My solution: paint the inside of the adapter with a non reflective deep matte black.
I've decided to dismantle the adapter to do a clean paint job, at first I was afraid I would spoil the alignment, but there is actually no way to mess the alignment up as it is just 2 screwed mounts sitting flush on the machined adapter, there is no spacer whatsoever.
I've not received the spray yet, but will give my feedback once I have finished the job.
The adapter, dismantled ( a really easy job - took me 2 minutes):
I'll keep everyone posted when the paint job is done.
p.96 #11 · Sony A7 and A7r Full Frame with Canon Lenses
beetlephoto wrote:
Bonjour Marc,
I've been thinking about your mod, and the fact that the full shift cannot be used really bothers me, as I like to do stitched panoramas with full shift in both directions.
As others here I've been experiencing nasty reflections with the Metabones Mk III adapter, mostly in very high contrast situations (light against dark background).
My solution: paint the inside of the adapter with a non reflective deep matte black.
I've decided to dismantle the adapter to do a clean paint job, at first I was afraid I would spoil the alignment, but there is actually no way to mess the alignment up as it is just 2 screwed mounts sitting flush on the machined adapter, there is no spacer whatsoever.
I've not received the spray yet, but will give my feedback once I have finished the job.
The adapter, dismantled ( a really easy job - took me 2 minutes):
I'll keep everyone posted when the paint job is done....Show more →
Hi beetlephoto,
great. I'm curious how it compares. Would be good news if it works and the last restrictions in use of sthift would be ruled out. Let us know what the results are.
Interesting to see how the adapter looks inside. I already suspected they chose this strange geometry because they needed space for the electronics.
p.96 #13 · Sony A7 and A7r Full Frame with Canon Lenses
That's what I want to find out myself. It happened with 24-70 and 70-200 canon lenses, so I doubt its exit pupil issue.
I'm going to do some velour blackout of the adapter to see if this issue can be mitigated. REALLY hoping this is adapter related, since the fix is at least possible.
To be honest, 1st flare is not as bothersome, at least its 'clean'.
Other examples I posted of crazy flares are bigger issue, and the pattern makes me think that adapter is involved. https://www.fredmiranda.com/forum/topic/1247655/142#12019375
Sneakyracer wrote:
Are these flares because of the adapter? Or the sensor / lens combination (exit pupil?)
p.96 #14 · Sony A7 and A7r Full Frame with Canon Lenses
Fred Miranda wrote:
I have seen the so-called "orange peel". However, if I overshapen 5D III raw files, I see it too.
Ok, so I finally was able to create this "orange peel" ...but again, only after deliberately applying sharpening that was way more aggressive than what I would normally use.
I went out and found some D800E samples at full size that had similar elements, and applied aggressive sharpening to those, and this "orange peel" effect looked exactly the same. And the fact that oversharpening 5DIII files produces the same effect is another clue.
At this point, I am extremely skeptical this is any sort of artifact resulting from Sony's raw compression.
Perhaps there are still other effects that might show up from Sony's raw compression...my judgement is still out on that. But I will say I have been looking for the past few days, and after pushing some files pretty hard, so far there has been literally nothing I have been able to do to make my A7r files look worse than my 5DII raw files with the same amount of processing.
p.96 #18 · Sony A7 and A7r Full Frame with Canon Lenses
Fred - have you tried using a high quality micrometer on your adapters to check them for consistency in depth from flange to flange. If you're off more than a couple thousandths, you can take it apart and shim one side or the other. I've had to do that with a Leica to EOS adapter that was quite a bit off when mic'd.
p.96 #19 · Sony A7 and A7r Full Frame with Canon Lenses
Fred, that is great to hear, I can't wait to hear about the actual shooting experience. I am primarily a landscape shooter, and have really grown to love the 5DII and Canon TSE combo. To dive into the A7R, I really need to know if it delivers in the field.
p.96 #20 · Sony A7 and A7r Full Frame with Canon Lenses
beetlephoto wrote:
Bonjour Marc,
I've been thinking about your mod, and the fact that the full shift cannot be used really bothers me, as I like to do stitched panoramas with full shift in both directions.
As others here I've been experiencing nasty reflections with the Metabones Mk III adapter, mostly in very high contrast situations (light against dark background).
My solution: paint the inside of the adapter with a non reflective deep matte black.
I've decided to dismantle the adapter to do a clean paint job, at first I was afraid I would spoil the alignment, but there is actually no way to mess the alignment up as it is just 2 screwed mounts sitting flush on the machined adapter, there is no spacer whatsoever.
I've not received the spray yet, but will give my feedback once I have finished the job.
The adapter, dismantled ( a really easy job - took me 2 minutes):
I'll keep everyone posted when the paint job is done....Show more →
I don't know which paint you are going to use, but if you are painting bare metal you may need to apply primer 1st, otherwise the paint will peel very easily.
