photo:sonya7riv_vs_omdem1iii
Sony a7R IV vs Olympus OM-D E-M1 Mark III
Introduction
Olympus OM-D E-M1 III functions or features not available in the Sony
cost
20mp 2x crop of full frame for greater telephoto reach
minimal rolling shutter of the sensor which allows the silent electronic shutter to be far more usable
incredible IPX1-rated weather-sealing which gives more confidence in inclement weather
fast burst mode:
the Olympus can do 10fps with C-AF and 15fps S-AF with mechanical shutter and 18fps C-AF and 60fps S-AF with the electronic shutter
the Sony can only do 10fps mechanical shutter in 12bit compressed RAW or APS-C and only 6fps in uncompressed 14-bit RAW
7.5EV image stabilisation with OIS lenses
fully articulating swivel rear LCD
Starry Sky AF mode
Live Composite night mode
Live BULB/Timed night modes
automatic in-camera focus stacking
in-camera programmable focus range
Eye AF prioritisation of the closest eye
easier to use menu system
Lenses to match the Olympus size, weight and functionality
-
-
this approximately equates to 400mm f/5.6 lens on FF or 300mm f/4 lens on APS-C crop mode - Sony do not make any primes in these categories - you could use a Canon EF lens but AF would not quite be as fast and they are unlikely to be sharp enough for the a7RIV's sensor being designed for older lower resolution work
OIS cannot be used in dual sync IS on Olympus cameras
$US2999 including bundled DMW-TC14 1.4x teleconverter
Sony FE 100-400mm f/4.5-5.6 GM OSS lens
this will essentially cover this lens but optics may not quite be as good as the Leica
it is longer - 205mm and extends on zooming while the Leica is only 174mm
this lens is similar design to the old
Olympus ZD 50-200mm f/2.8-3.5 lens for Four Thirds but on steroids - significantly longer and heavier and with extra function switches and buttons, plus an effectively wider aperture, and thus no where near as discrete as the Leica, especially so being a white lens
it is heavier at over 1.3kg compared to 1.2kg for the Leica
close focus is better at 0.98m not 1.15m as for the Leica
bokeh is unlikely to be as nice given the zoom elements
$US2499 + $US548 for the 1.4x teleconverter puts them at the same price
-
-
due to be released late 2020
this approximately equates to 300-800mm f/9 on FF or 200-530mm f/6 on APS-C crop mode
with the in-built 1.25x TC activated this approximately equates to 380-1000mm f/11 on FF or 250-670mm f/7.3 on APS-C crop mode
Sony FE 200-600mm f/5.6-6.3 G OSS with a 1.4x or 2x TC
1.4x TC gives 280-840mm f/8-f/9 on FF
2x TC gives 400-1200mm f/11-f/12.6 on FF
we will have to see how the image quality compares but it is unlikely this G entry level zoom will have optics to match the a7RIV resolution when mated with teleconverters
Sony FE 600mm f/4 GM OSS with a 1.4x or 2x TC
this would match it optically but is incredibly expensive at over $US12,999 with TCs and is 3kg
obviously has a massive advantage of 600mm with f/4 DOF and the 61mp FF sensor with higher ISO performance
Canon EF 200-400mm f/4 with in-built 1.4x TC plus an extra 1.4x TC
in FF this gives 200-400mm f/4 switchable to 280-560mm f/5.6 with in built TC
using an extra 1.4x TC would give 390-784mm f/8 which gets you to the same ball park as the Oly natively but the Oly can then kick in its TC to take you further, while the a7RIV gets to go to APS-C mode to match.
3.6kg and $US11,800 are likely to be show stoppers though plus AF not as good as a native Sony FE lens.
photo/sonya7riv_vs_omdem1iii.txt · Last modified: 2020/06/28 14:42 by gary1