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Panasonic 20mm f1.7 lens for M4/3

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strawman
strawman  1022006 forum posts United Kingdom16 Constructive Critique Points
25 May 2012 - 3:28 PM

err CB The Canon system does that also, well the 5D MKII did. you connect the camera to the PC via the USB Cable and follow the on-screen instructions, or you can use the memory card technique. Personally I prefer the memory card technique, anything that takes extra devices out of the update process is good news. regardless its good to have the new firmware on the card should there be an interruption of the re-flash process.

Does the Olympus SW not ask you to put an empty memory card in the card slot. I hope they are not running real time from the PC or from RAM.

Last Modified By strawman at 25 May 2012 - 3:30 PM
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25 May 2012 - 3:28 PM

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Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
25 May 2012 - 3:32 PM


Quote: The Canon system does that also

Well I'll be blowed! Wink I obviously didn't notice that. Trying to think if I upgraded the firmware on the 5D II. Pretty sure I did.

I certainly did on the 20D and 5D I.

The OM-D firmware update is here.

Last Modified By Carabosse at 25 May 2012 - 3:35 PM
Paul Morgan
Paul Morgan e2 Member 1315152 forum postsPaul Morgan vcard England6 Constructive Critique Points
25 May 2012 - 4:12 PM


Quote: I hope they are not running real time from the PC or from RAM

Works a little like windows updates John, downloads to memory in full before it alters the camera.

My old Canon 300D firmware did not work like this so it must be pretty new, Olympus has updated like this since the E1.

strawman
strawman  1022006 forum posts United Kingdom16 Constructive Critique Points
26 May 2012 - 12:13 AM

We are getting off topic, but I was thinking the PC puts the update into non-volatile memory so on a power interruption or task interruption you can re-start the process. So on the camera I would hope the new firmware is put into the memory card and not sent down the USB link real time as the USB link is prone to corruptions (and PCs tend to go off and do other things too) that may prevent the real time stream of data needed to keep the on-micro flash re-programming happy.

All the canon system does is run the code to the memory card from the PC, then the PC software guides you to start the camera re-program. My phone looks to use a similar process to update its OS. My tablet looks to have multiple memory devices so it downloads to one Flash device then runs from that to program the firmware.

Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
26 May 2012 - 5:38 PM

With Olympus you have to remove the memory card from the camera before doing the firmware update.

Paul Morgan
Paul Morgan e2 Member 1315152 forum postsPaul Morgan vcard England6 Constructive Critique Points
26 May 2012 - 5:41 PM

How about the Sigma 19mm CB.

http://www.ephotozine.com/article/sigma-19mm-f-2-8-ex-dn-m43-lens-review-18971

Last Modified By Paul Morgan at 26 May 2012 - 5:43 PM
Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
26 May 2012 - 5:45 PM

Very tempting Paul. Wink I think I'll wait for a bit though and see what Oly does about the issue with the Panny 20mm. I'd like a nice fast lens like that,

Paul Morgan
Paul Morgan e2 Member 1315152 forum postsPaul Morgan vcard England6 Constructive Critique Points
26 May 2012 - 5:50 PM

Would you be likely to use ISO 6400 a great deal CB, as I understand it, this is were the banding shows.

That Sigma focuses pretty close as well, 20cm, the same as the 19mm that I use Smile

Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
26 May 2012 - 5:58 PM


Quote: Would you be likely to use ISO 6400 a great deal CB, as I understand it, this is were the banding shows

The OM-D is camera which tempts you to use high ISO, Paul! Lol! Smile (More so, anyway, than my old Canon 5D Mk II).

My need for a fast lens is a few weeks away yet so I can play a waiting game for now.

Paul Morgan
Paul Morgan e2 Member 1315152 forum postsPaul Morgan vcard England6 Constructive Critique Points
27 May 2012 - 8:22 PM


Quote: My need for a fast lens is a few weeks away yet so I can play a waiting game for now

Have you seen the new 75mm f1.8 Smile

Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
27 May 2012 - 9:10 PM


Quote: Have you seen the new 75mm f1.8

Yes.............. and the price! Grin

StrayCat
StrayCat e2 Member 1014627 forum postsStrayCat vcard Canada2 Constructive Critique Points
27 May 2012 - 9:41 PM

That 75mm seems an odd focal length for a prime.

Get the 20mm CB, the price is right if that focal length serves your purposes.Smile

Last Modified By StrayCat at 27 May 2012 - 9:42 PM
Carabosse
Carabosse e2 Member 1139395 forum postsCarabosse vcard England269 Constructive Critique Points
27 May 2012 - 9:44 PM

There is method in their madness. The 75mm (= 150mm on FF) will give similar shallow DoF as an 85mm portrait lens on FF.

But you'll have to stand well back! Wink

lemmy
lemmy  71807 forum posts United Kingdom
27 May 2012 - 9:51 PM

I have one. Never get rid of it. razor sharp, compact, fast and not expensive. One of those lenses you'll always need, like a 35mm f2 used to be on a Leica.

Paul Morgan
Paul Morgan e2 Member 1315152 forum postsPaul Morgan vcard England6 Constructive Critique Points
27 May 2012 - 9:59 PM


Quote: Yes.............. and the price!

Its priced the same as the Canon 135 f2, I don`t think its that bad Smile

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