Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2019 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$60 $20
SAVE $40

$950 $700
SAVE $250

$1597 $997
SAVE $600

$499 $499
SAVE $0

$1149 $1149
SAVE $0

$1499 $1259
SAVE $240

$400 $360
SAVE $40

$372 $247
SAVE $125

$9999 $2999
SAVE $7000

$4500 $3500
SAVE $1000

$70 $50
SAVE $20

$1000 $500
SAVE $500

$1398 $898
SAVE $500

$1499 $1249
SAVE $250

$829 $799
SAVE $30

$935 $549
SAVE $386

$309 $259
SAVE $49

$1300 $900
SAVE $400

$450 $280
SAVE $170

$1499 $1249
SAVE $250

$700 $600
SAVE $100

$349 $349
SAVE $0

$2000 $1270
SAVE $730

$1499 $779
SAVE $720

$450 $120
SAVE $330

$349 $349
SAVE $0

$150 $70
SAVE $80

$3998 $3498
SAVE $500

$150 $80
SAVE $70

$369 $175
SAVE $194

$1699 $1199
SAVE $500

$649 $449
SAVE $200

$1498 $998
SAVE $500

$999 $949
SAVE $50

$1099 $999
SAVE $100

$400 $320
SAVE $80

$2399 $2199
SAVE $200

$200 $95
SAVE $105

$200 $170
SAVE $30

$7697 $4997
SAVE $2700

Reader Comment: Sony RX1R Focusing at Shooting Aperture

See the review of the Sony RX1/RX1R in Guide to Mirrorless.

Buy the Sony RX1R.

Paul I writes:

I’ve been blown away by the files from my Sony RX1r, and would love to get an A7 and/or A7R.

The one extremely annoying thing about the RX1r is that it only focuses at the shooting aperture, rather than wide open like an SLR. The increased depth of field at smaller apertures makes it more difficult to achieve precise focus. (Of course focus shift might come into play, but I haven’t tested that).

Do you know if the A7 and A7r can behave like an SLR and focus wide open, and then stop down for the exposure. Sure would be nice.

DIGLLOYD: The RX1R offers outstanding results, and is equal to or superior to the Leica M240 + Summilux 35/1.4.

One algorithmic flaw with Sony and most other mirrorless cameras is that they focus stopped down, an issue I’ve remarked on repeatedly over the years in my reviews, including both the Sony RX1/RX1R as most recently the Leica X Vario. I would expect the Sony A7 and A7R to behave the same way (like the NEX-7 and RX1R). Which is a pity. But I don’t know as yet.

Suppose the exposure is to be made at f/8. If the camera focuses at f/8, it sees a deep zone of peak contrast, hence it cannot descriminate the precise point of focus accurately; the autofocus system might place the zone of sharp focus biased forward or rearward, depending.

The solution I use in the field (constantly) with the RX1R and other cameras that behave this way is to focus wide open or one stop down (f/2.8 for the RX1R), then switch to manual and shoot at the desired aperture. In this way I obtain exactly the focus I wish. But it is a nuisance that could easily be addressed with a firmware update (preference). The saving grace is that an aperture ring makes this relatively fast, even if tediously wasteful of my time.

Still, I also shot ad-hoc enough to find that the RX1R does a very good job focusing to my liking in the f/4 and f/5.6 range, but I also unconsciously aid the camera in my choice of focus. But by f/8 - f/11, relying no AF this way is not the way to obtain peak results where desired; it’s a sub-optimal and casual approach.

Another approach

Using a manual focus Leica R or Leica M or Zeiss ZM or Zeiss ZF.2 DSLR lens (using an adapter), one has complete control over the choice of aperture and focusing. This approach is my preference for contemplative photography (still-life, landscape, anything relatively static). That is, provided the lens offers performance that is at a level that exceeds the autofocus alternative.

See also:

Sony RX1R with EVF and Really Right Stuff grip
(my preferred shooting configuration)
OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
OWC Envoy Pro EX SSD
Blazingly fast USB-C SSD!

Up to 4TB capacity, USB-C compatible with Thunderbolt 3.

√ Fastest USB drive MPG has tested!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!

Our trusted photo rental store

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.