Posts Tagged ‘Sony RX1’

Sony a7R vs. Leica M9 infinity test with 20+ Leica, Zeiss, Voigtlander rangefinder lenses

Sunday, January 26th, 2014


UPDATE: I’ve moved this post to a permanent page. Click HERE to go to it.


As a follow-up to my overwhelmingly popular October 2013 infinity test with a preproduction Sony a7 and various rangefinder lenses, here’s the infinity shootout I really wanted to do back then… between a regular production Sony a7R and Leica M9, with a similar, though not identical, collection of a couple dozen mostly rangefinder lenses… Unfortunately, this time I’m not one of the first in the world with the results! Please refer to the a7 shootout for an explanation why infinity focus is such a ‘torture test’ for these lenses and cameras.

As with the a7 test, I’m making this information and the high resolution files freely available for personal, non-commercial use only. If you find this useful, please consider making a donation through the Paypal button below, or making your next purchase through B&H using the indicated links throughout the article. Any amount is appreciated!

Sony a7 buffer and card write times

Sunday, October 20th, 2013

During my brief time with a preproduction Sony a7 camera, I ran a quick test to determine buffer depth and clear times. This detail always interests me about new cameras and I was curious to see how the a7 stacked up, in part because I couldn’t find any information about buffer depth in the initial reports.

With a Transcend 16GB SDHC Class 10 card:

RAW: 28 frames and 25 seconds to fully clear the buffer.
RAW + JPEG: 24 frames and 35 seconds to clear.
JPEG extra fine: 55 frames and 47 seconds to clear.

With a Panasonic Gold 32GB SDHC UHS-1 Class 10 card:

RAW: 35 frames and 18 seconds to clear.
RAW + JEPG: 28 frames and 22 seconds to clear.
JPEG extra fine: 78 frames and 32 seconds to clear.

Keep in mind this was with a preproduction camera (firmware version 0.90). Therefore, results may differ once the camera starts shipping.

Considering the relatively slow fps rate, at least the camera isn’t going to hit a buffer limit quickly. If there is an annoyance, it took a few seconds before a just-shot image could be fully reviewed on the camera. Based on at least these two cards, the camera will benefit from a faster card. And as with all modern digital cameras, the a7 will continue to operate and allow you to shoot additional frames as buffer space clears.

Sony RX1 Sonnar 35mm vs. Leica M9 and Biogon 35mm ZM lenses review

Wednesday, March 13th, 2013

Sony DSC-RX1 Carl Zeiss 35mm f/2 Sonnar vs. Carl Zeiss 35mm f/2 Biogon ZM comparison review

The Sony DSC-RX1 ultra-premium compact full frame camera with Carl Zeiss 35mm f/2 Sonnar lens has received a lot of praise for its technical achievements. Not only is it the smallest camera in its class (it’s perhaps in a class of its own at the moment), but it also attains very high levels of image quality, comparable to what one can produce from full frame interchangeable lens systems.

The Sonnar lens is the purpose of this review. More specifically, an examination of how well it and the RX1 hold up against currently available Carl Zeiss 35mm ZM-series lenses on the Leica M9 full frame 18MP camera.

Why the ZM lenses and not the ZE/ZF lenses? For a couple reasons:

1) It has been stated by some that for the price of the RX1 and a few accessories, one comes into used M9 territory. This is more so the case now that Leica has released the ‘M’ and used M9 prices have dropped below $4,000. For ‘only’ another $1,000 or so, one can add a quality ZM lens to the M9 and benefit from an interchangeable lens system not much larger in size with more flexibility than the RX1. Both options are much smaller than currently available full frame DSLRs with Zeiss ZE/ZF lenses.

2) I happen to use the M9 and am curious about how well the RX1 compares, and have access to both ZM 35mm lenses. If time and opportunities permit, I may revisit this comparison with some additional Leica M-series lenses.

Click on the image at top or here to continue to the review.

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