Everything but a fast-traversal shutter

ProfHankD

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Why get an A7CR?

Well, I nearly always carry two bodies for any serious shooting. Most recently, it's been an A7RV and an A7RII. However, one of my A7RII workhorses died. OK, it was not a lightly used camera, and even had lost a chunk of plastic from around the viewfinder in an unfortunate meeting with concrete a couple of years ago. However, it died by the mechanical shutter locking up with no prior warning, so now I don't quite trust my surviving A7RII... The A7CR seemed the obvious replacement to pair with an A7RV.

I had thought about getting an A7CR for a while, but the lack of a full mechanical shutter (just EFCS) combined with slow electronic shutter readout really made me hesitate. Well, now I can definitively say that is the #1 downside of using this camera. Here's my list of negatives:
  • The lack of a full mechanical shutter or fast electronic shuttering means you are sometimes left with a choice between deformed bokeh and distortion in the vertical axis. Boo. On the other hand, I'm not feeling like shooting all electronic is the huge handicap I expected. So far, I've been more concerned about the lack of any sound when capturing a photo than with the artifacts I expected -- I find myself checking that each image really has been captured.
  • The A7RV keeps the sensor covered when not in use, and that has been a huge benefit in reducing dirt getting to the sensor during lens changes in the field, which has been a big problem on my other Sonys. Unfortunately, the A7CR doesn't cover the sensor when the camera is turned off from silent electronic shutter mode -- it can in EFCS mode.
  • The A7CR wants to couple with your cell phone to get configured. It was nice being able to install a firmware upgrade via my cell phone, but it did take a little while to get the camera initialized, and it wouldn't happen without a smartphone running the Sony app.
  • Compared to the A7RV, the EVF is smaller and less impressive and the LCD doesn't do the up/down pivoting on the rear (it does flip out and pivot for selfies, etc.). Honestly, this is not a big handicap...
  • This camera does seem to run a little warm. Battery life also seems slightly shorter than on the A7RV. This is generally not a problem, but it is noticeable and perhaps could be an issue for video users? Then again, this is a dumb camera choice for a video-centric user, although it does have some vlogging-friendly features.
  • The included grip extender is very pretty and well-made, but pointless. They could have at least given it a storage compartment for an SD card or somesuch. I'd rather they had made it optional and dropped the camera cost correspondingly.
As for the positives, they are everything else. In particular:
  • It produces images just like the A7RV, which is as good as FF gets thus far.
  • It is cheaper than an A7RV. In fact, it's cheaper than an A7RIVA. It is true that a Sigma fp L is cheaper still, but that's missing lots of important A7CR features (e.g., no IBIS) and doesn't take Sony E lenses.
  • This camera is smaller than an A7RV, but honestly feels more like the A7RV than an A6500 -- which is weird, because those two cameras fit in virtually the same bounding box. Comparing to an A6500, the A7CR body is thicker, but the EVF doesn't stick out as much, so we get the same bounding box. I got the A7CR with the chrome top, and that chromed part isn't wider than the top of the A6500, so it looks like an A6500 rather than giving off the "expensive camera here" vibe. Incidentally, this still manages to fit one of the bigger NP-FZ100 batteries.
This is a really nice second camera to carry with an A7RV.

The A7CR + a Tamron 28-200mm f/2.8-5.6 Di III RXD also makes a killer one-lens travel kit. Add an ultrawide zoom for a two-lens kit.

As a very discrete walk-around kit, I'd throw something like a cheap and tiny Pergear 35mm f/1.4 on it.

In case any Sony employees are listening: the biggest thing I miss on both the A7RV and A7CR is some of the PlayMemories functionality that the A7RII benefits from. With PlayMemories discontinued, I really think functionality of things like the Lens Compensation app should have been simply a built-in feature of the newer cameras. That app in particular really helps with using manual (unchipped) lenses.
 
I think I could get over the EFCS only aspect by simply carrying my NDs more often, still unsure if I could live with a buffer half as large as my A7R IV's... I guess maybe if it cleared faster, hmm....
 
I think I could get over the EFCS only aspect by simply carrying my NDs more often, still unsure if I could live with a buffer half as large as my A7R IV's... I guess maybe if it cleared faster, hmm....
Hmm. That is potentially significant, but I don't do a lot of burst shooting at 60MP.

It should be pretty rare that I exceed 44 uncompressed raws -- that would be a 5.5s burst at full speed for the A7CR. On my A7RV, I've only done that once, during an eclipse, and it was painful because it took F.O.R.E.V.E.R to clear the buffer. Incidentally, I generally shoot compressed raw + JPEG...

I'd argue that the right way to do long bursts on the A7RV is shooting 8K video -- which is another thing the A7CR can't do.
 
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I think I could get over the EFCS only aspect by simply carrying my NDs more often, still unsure if I could live with a buffer half as large as my A7R IV's... I guess maybe if it cleared faster, hmm....
Hmm. That is potentially significant, but I don't do a lot of burst shooting at 60MP.

It should be pretty rare that I exceed 44 uncompressed raws -- that would be a 5.5s burst at full speed for the A7CR. On my A7RV, I've only done that once, during an eclipse, and it was painful because it took F.O.R.E.V.E.R to clear the buffer. Incidentally, I generally shoot compressed raw + JPEG...

I'd argue that the right way to do long bursts on the A7RV is shooting 8K video -- which is another thing the A7CR can't do.
Hmm, is that 44 shots deep on the A7CR? I was under the impression it was a bit smaller (like 30-something), is it worse or better with lossless compression? Other than shooting the kids at play, concerts is when I tend to run into buffer limitations...
 
I think I could get over the EFCS only aspect by simply carrying my NDs more often, still unsure if I could live with a buffer half as large as my A7R IV's... I guess maybe if it cleared faster, hmm....
Hmm. That is potentially significant, but I don't do a lot of burst shooting at 60MP.

It should be pretty rare that I exceed 44 uncompressed raws -- that would be a 5.5s burst at full speed for the A7CR. On my A7RV, I've only done that once, during an eclipse, and it was painful because it took F.O.R.E.V.E.R to clear the buffer. Incidentally, I generally shoot compressed raw + JPEG...

I'd argue that the right way to do long bursts on the A7RV is shooting 8K video -- which is another thing the A7CR can't do.
Hmm, is that 44 shots deep on the A7CR? I was under the impression it was a bit smaller (like 30-something), is it worse or better with lossless compression? Other than shooting the kids at play, concerts is when I tend to run into buffer limitations...
The 44 number was from WWW reviews where the A7RIV is listed as 88. Here's the actual Sony spec for 8.0fps Hi+:

NO. OF FRAME RECORDABLE (APPROX.)
JPEG Extra fine L: 48 frames , JPEG Fine L: 320 frames, JPEG Standard L: over 1,000 frames, RAW: 36 frames, RAW & JPG: 32 frames, RAW (Lossless Compressed): 16 frames, RAW (Lossless Compressed) & JPEG: 15 frames, RAW (Uncompressed): 14 frames, RAW (Uncompressed) & JPEG: 13 frames


and yes, those numbers are MUCH worse (but still fine for me). They also seem a bit nonsensical. However, it is helpful to know that Sony's default "lossy" compressed ARWs are actually compressed on the sensor and thus roughly double the performance of everything, whereas the other raw formats have the sensor spew uncompressed data and then reprocess it, taking both more space and more time. Incidentally, the "lossy" raw format isn't very lossy, and the (rare) artifacting it gives is explained in my Electronic Imaging 2016 research paper, Sony ARW2 Compression: Artifacts And Credible Repair (PDF slides here ). The KARWY repair software is discussed at https://aggregate.org/DIT/KARWY/ .

BTW, all the Sony specs I quoted above come with the footnote:

Varies according to shooting conditions or memory card used

which means under some circumstances a fast card may indeed get 44 uncompressed before stalling, but Sony's promised numbers are way more conservative (not unusual for Sony). Basically, it's a race between buffering and format translation + SD card writing, not a memory capacity number.

BTW, the corresponding Sony specs for the A7RV are 10 fps with:

JPEG Extra fine L: over 1000 frames, JPEG Fine L: over 1000 frames, JPEG Standard L: over 1000 frames, RAW: 583 frames, RAW & JPEG: 184 frames, RAW (Lossless Compressed): 547 frames, RAW (Lossless Compressed) & JPEG: 159 frames, RAW (Uncompr essed): 135 frames, RAW (Uncompressed) & JPEG: 88 frames

and Sony doesn't give numbers for the A7RIV...
 
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Really useful overview of a camera I’m strongly considering alongside my original A7C. Thanks.
 

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