chiron wrote:
It may be a couple of weeks too early to really answer this question, because there are not enough full reviews or A73 cameras in the wild yet. But I thought many forum members might be interested in having well-informed responses to this issue in one thread. I know that I am interested in collecting the details on this.
Apart from price and resolution/file-size, what are the advantages and disadvantages of these two cameras in relation to each other?
Are there any reasons to prefer the A73 to the A7R3?
Sensor quality?
Dynamic range?
Color qualities?
White balance?
Electronic shutter differences?
Mechanical shutter differences?
Flash differences?
Noise?
Low light shooting?
High ISO qualities?
JPEG quality?
Autofocus speed, accuracy, sensitivity, and features?
EVF differences?
LCD differences?
Touch-screen differences?
Buffer differences?
IBIS differences?
Time-to-shoot and general responsiveness?
What are the best/most-ideal applications for each camera?
Anything else?
Nice comprehensive list of questions. Here are my best answer from trying to understand the new cameras:
Sensor quality? 7R III has more resolution obviously that makes it a better sensor, but otherwise similar.
Dynamic range? Very similar
Color qualities? A7r III has a bit higher color depth score at DXO, but I'm not sure there is much too it.
White balance? I haven't seen anything indicating meaningful differences
Electronic shutter differences? I am not sure we will know more when Jim Kasson tests the A7 III
Mechanical shutter differences? I am not sure but it appears they are the same mechanical shutter. I may be wrong about that, however.
Flash differences? The A7r III has a PC port which can be very useful for using some flashes; the A7 III does not. Otherwise they appear very similar at least in all reports I have seen.
Noise? Very similar when looking at similar output size
Low light shooting? Very similar
High ISO qualities? Very similar
JPEG quality? Very similar as far as I can tell
Autofocus speed, accuracy, sensitivity, and features? I don't think we will know until the A7 III is more fully tested. The A7 III obviously has more points and covers more of the sensors, but speed, accuracy, sensitivity and features I expect to be pretty similar, but the proof will be in the testing.
EVF differences? A7r III has a bigger EVF than A7 III
LCD differences? A7r III has a higher resolution LCD than A7 III I believe
Touch-screen differences? None that I have seen reported
Buffer differences? Image resources tests the A7 III as having a bit deeper buffer with 40 Raw images for the A7 III and 30 for the A7r III
IBIS differences? Only the obvious pixel shift being available for the A7r III and not for the A7 III. Pixel shift takes advantage of the IBIS system
Time-to-shoot and general responsiveness? I haven't seen tests yet. Unfortunately image resources only reports these tests for the A7r III, which are very good, but not the A7 III
What are the best/most-ideal applications for each camera? The A7r III is a wonderful camera for everything in my view except for fast action, where it will be outclassed by the A9. The A7 III will be excellent for everything except where very high resolution is needed. The both cover a wide range of subjects. The A9 is still the better choice for fast action and when ultimate AF is needed.
Anything else? Nothing I can think of.
Apr 14, 2018 at 03:23 PM
Previous versions of Steve Spencer's message #14435814 « A73 & A7R3? Advantages & Disadvantages? »
