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Re: [OM] E-M1 MF magnification and focus peaking for Joel: was: Re: Sedg

Subject: Re: [OM] E-M1 MF magnification and focus peaking for Joel: was: Re: Sedge butterflies -
From: Martin Walters <mwalters@xxxxxxxxxx>
Date: Mon, 11 Jul 2016 13:59:53 -0400
Don:
The time allowed for using AF+MF with native lenses is short, as I remember (don't use it). The discussion below was meant to relate to using magnify with MF, not AF, lenses, where there's no time constraint.

Martin


On 11/07/2016 1:30 PM, Don Holbrook wrote:
Martin, the EM-1 also works as you explain, except the rear dial changes the X and 
the camera defaults to mode2.  I use the fn2 for magnify & the preview button 
for peaking.  With a m4/3 lens, you only have 2 sec to touch the focus ring and 
turn the rear dial.  If there is another way, I haven't found it.

----- Original Message -----From: Martin Walters <mwalters@xxxxxxxxxx>To: Olympus 
Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>Sent: Mon, 11 Jul 2016 16:20:38 -0000 
(UTC)Subject: Re: [OM] E-M1 MF magnification and focus peaking for Joel: was: Re: Sedge 
butterflies -

Chuck:In order for the IBIS to work in magnified view with MF lenses you need 
to do the following (mine is set up this way, I checked):

enable manual magnified view function

* allocate Fn2 button to magnified view * by default this is already set to 
&ldquo;MultiFunction&rdquo; and thus by holding it down you can set it to 
Magnified View functionality, alternatively, set the button to Magnify via the menu 
system as for other buttons. * the default behaviour is that when you touch the shutter 
button to activate IS as above, you are automatically exited from magnified view mode - 
exactly what we don't want. o to enable concurrent activation of IS and legacy lens 
magnified view, we need to set one more menu item: + *set LV Close Up Mode to mode 2 
(this is under Custom Menu, Disp/PC)*

This excerpt comes from: 
http://www.ayton.id.au/wiki/doku.php?id=photo:olympusem5_fourthirds

Martin

On 11/07/2016 12:06 PM, Martin Walters wrote:> Chuck:> I have found that I can focus up to 150mm MF lenses (250mm or so with > care) quite easily in daylight thanks to the IBIS (set to half press > on my camera) that steadies the image sufficiently. Yes, the EVF gets > a bit noisy in low light, but I find that it's still clear enough to > be useful. These days the only MF lens I use in low light is the 7.5mm > FE.>> I also agree that aperture priority is the way to go with MF lenses. > Changing the aperture and exposure compensation can be used if > necessary to keep either ISO or shutter speed in check. Operates much > like my OM-2n (finally, on topic), though with added bells and whistles.>> Martin>>> On 11/07/2016 8:48 AM, Chuck Norcutt wrote:>> Thanks to Martin's comments I now realize that I didn't differentiate >> magnify as an AF function related to the focus ring from the >> functions that can be assigned to various buttons (button functions >> in OM-D parlance).>>>> As it
tu
rns out, both magnify and focus peaking can be assigned to >> buttons which makes their operation available whether using native AF >> lenses or adapted MF lenses. I have now assigned the 2X converter >> (for a 2X view) to the button normally used for automatic white >> balance (because it's useless for raw shooting). I've also assigned >> the Fn1 button to magnify and the Fn2 button to focus peaking.>>>> When you press the magnify button the first time it displays the >> focus point rectangle which is movable. You move the focus point >> where you want the image magnified and a second press gives you a 10X >> view of that area. Pressing the focus peaking button then adds focus >> peaking to the display.>>>> Holding the camera still to focus at 10X using a 100mm equivalent >> lens can be a challenge without a tripod. But I did manage to do it >> in the weak morning light in my office while focusing on the AT&T >> logo on my phone about 3 feet away (black on gray). A breeze at >>
f/1
  .4. More difficult but doable at f/16. The screen brightness is >> maintained at f/16 but the screen brightness has to be boosted so >> much that there's a lot of 
competing digital noise in the display. >> At f/16 and low light you'll have to be satisfied with 10X >> magnification. If you turn on focus peaking the digital noise 
causes >> the focus peaking display to go bonkers.>>>> I would strongly suggest using aperture preferred mode with exposure >> compensation over manual mode 
when using adapted MF lenses. When in >> manual mode, if the shutter speed is more than 3 stops down from >> correct exposure it's easy to be fooled (by the histogram) 
that the >> exposure is OK when it's not. Aperture preferred is much easier >> anyhow as there is no searching for the correct shutter speed. The >> histogram 
clearly responds to the aperture ring and the exposure >> compensation dial (shutter speed) clearly reads over/under exposure >> as you would expect.>>>> 
Thanks to Joel for the que
sti
  ons that caused me to pursue this and to >> Martin for making me realize the difference between the automatic >> operation of magnify with the focus ring and the manual control of >> both magnify and focus peaking using button functions that work 
>> whether using AF lenses or adapted MF lenses.>>>> Chuck Norcutt>>>>>> On 7/10/2016 9:44 PM, Martin Walters wrote:>>> Chuck:>>> With respect to 'If anyone knows how to turn on magnification or focus>>> 
peaking with an MF lens I'd like to hear about it.' : The EM-5 has a>>> magnify command (which can be programmed to one of the buttons) which>>> will magnify the view when using MF lenses. Different from the AF+MF>>> setting when you touch the 
focus ring of an AF lens. I assume your EM-1>>> offers the same magnify command. The EM-5 doesn't have focus >>> peaking, so>>> the magnify command is the only way to go for MF with legacy lenses.>>>>>> 
Martin>>>>>>>>> On 10/07/2016 8:59 PM, Chuck Norcutt wrote:>>>> Yes, manual focus all the way wi
th
an OM Zuiko 50/1.4. Yes, it's easy>>>> to focus an OM Zuiko at f/16 in sun or subdued indoor day light. But>>>> f/16 doesn't work in a dark hallway. As I said even the camera's>>>> autofocus had difficulty there even shooting at f/6.3.>>>>>>>> No, there is no "focus confirm" as on your DSLR adapter. The E-M1>>>> employs magnification and focus peaking for MF focus assistance but,>>>> AFAIK, it only works with AF lenses when in MF mode since turning it>>>> on is controlled by the MF ring on the AF lens. You can, however,>>>> turn on the 2X digital converter for a 2X display. Just remember to>>>> turn it off again before you take the shot or you'll get the 2X shot.>>>>>>>> If anyone knows how to turn on magnification or focus peaking with an>>>> MF lens I'd like to hear about it.>>>>>>>> When reviewing images already taken the rear dial can increase>>>> magnification up to 14X. It would be nice to have that feature work>>>> while taking images.>>>>>>>> Chuck Norcutt>>>>>>>>>>>> On
7/1
  0/2016 5:45 PM, DZDub wrote:>>>>> On Sun, Jul 10, 2016 at 11:39 AM, Chuck Norcutt <>>>>> chucknorcutt@xxxxxxxxxxxxxxxx> wrote:>>>>>>>>>>> Yes, you can focus at f/16. I just tried it outdoors in bright >>>>>> sun and>>>>>> various places in the subdued light in the house. Then I pointed it>>>>>> down>>>>>> the dark hallway going out to the garage. In the dark hallway 
I>>>>>> could see>>>>>> objects at f/16 but not well enough to focus until I opened to f/8>>>>>> although>>>>>> f/5.6 made focusing easier. Note that the camera was set at ISO 200>>>>>> and I>>>>>> didn't attempt to change that.>>>>>>>>>>>> To give you an idea of the brightness ranges involved I fitted the>>>>>> m.Zuiko>>>>>> 12-50 so I'd have 50mm 
available to go with the Zuiko 50/1.4 I used>>>>>> for the>>>>>> MF lens.>>>>>>>>>>>> The outdoors shot was 1/320 at f/8 with -0.7 exp. comp. The indoors>>>>>> subdued light shot was 2" at f/5.6 with -0.7 exp. comp. The shot>>>>>> down the>>>>>> dark hallway was 8" at f/6.3
 wi
  th no exp. comp. f/6.3 is wide open>>>>>> at 50mm>>>>>> on the m.Zuiko 12-50. The camera had great difficulty focusing on>>>>>> the edge>>>>>> of a throw rug near the exit door. It took it several seconds to>>>>>> lock in>>>>>> and easily lost it. At f/6.3 on the 50/1.4 I think I could have>>>>>> beaten the>>>>>> camera and could have 
gotten an easier and faster shot by opening to>>>>>> f/1.4.>>>>>> Keep those old, fast Zuikos. They are still quite usable on an OM-D>>>>>> body.>>>>>>>>>>>>>>>> I would be less concerned about how easily you can focus a Zuiko at>>>>> f11 or>>>>> f16 than whether it could be done at all. I am assuming manual focus>>>>> 
all>>>>> the way. Is there some sort of focus confirm with the adapter you >>>>> use?>>>>> (Not super critical for me, but nice to have.)>>>>>>>>>> Thanks,>>>>> Joel W.>>>>>>>>>

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