Thanks for your elaborate post!
You're welcome to collect your beer around here
<https://www.google.nl/maps/@52.0776083,5.2329087,3a,60y,35.23h,92.96t/data=!3m6!1e1!3m4!1sNB9SKlmVpDbp3IHW7gNPZw!2e0!7i13312!8i6656>
;-)
The mushroom pictures are in-camera stacks with the 12-40 or 30 macro,
which are the lenses from that list I have. I understand its limitations
and not every stack turned out OK, but still I think it is a great feature
to have.
I'll experiment with bracketing only and an external program. I'd like that
to be freeware though..., any recommendation ;-).
2018-01-20 1:10 GMT+01:00 Moose <olymoose@xxxxxxxxx>:
> On 1/19/2018 5:52 AM, Frank wrote:
>
>> Please do, Moose. As I liked the feature in some recent mushroom shots
>> <https://www.flickr.com/photos/63142137@N08/albums/72157689466783056>.
>>
>
> Sigh . . .
>
> REMEMBER, Oly terminology is different than the rest of the photographic
> world! People have been using the term "focus stacking" forever. Oly is
> semantic/technically correct in calling that function that they have
> automated in these cameras "Focus Bracketing" Then they go and use the term
> "Focus Stacking" particularly for the combination of taking a set of focal
> plane slices and composting them into one all in-camera.
>
> My negative comment only applies to the in-camera stacking. It is entirely
> possible that the linked mushroom photos you admire are actually Brackets,
> not in-camera Stacks, and his labeling is imprecise.
> -------------------------------------
> From manual and web site:
>
> Focus BKT (Focus Stacking)
>
> The focus position is automatically shifted to capture 8 shots which
> are then composited for a
> single JPEG image that is in focus all the way from the foreground to
> background.
>
> - JPEG only
>
> • The focus position is automatically shifted based on the
> center of the focal position and 8 frames are captured in a
> single shot.
> • If compositing fails, the image will not be saved.
>
> - Oops. With Bracketing, you always get the intermediate images. (My TG-4
> does Focus Stacking and Bracketing in Microscope Mode. At least when it
> Stacks, "Two images are recorded, the first frame and the composite image.")
>
> • Focus stacking ends if zoom or focus is adjusted during
> shooting.
> • The angle of view for composited images is narrower than
> the original images.
>
> - Huh?
>
> Compatible with :
> M.Zuiko Digital ED 60mm f/2.8 Macro
> M.Zuiko Digital ED 12-40mm f/2.8 PRO
> M.Zuiko Digital ED 40-150mm f/2.8 PRO
> M.Zuiko Digital ED 30mm f/3.5 Macro
> M.Zuiko Digital ED 7-14mm f/2.8 PRO
> M.Zuiko Digital ED 8mm f/1.8 Fisheye PRO
> M.Zuiko Digital ED 300mm f/4.0 IS PRO
>
> - Oh, goodie, I have ONE of those. Doesn't work with my 12-100/4 Pro,
> 12/2, 25/1.8, 45/1.8, 75/1.8, 9-18, 12-50, 14-42, 75-300 or any of my
> several Panny lenses.
>
> Eight slices is seldom enough. My most usual setting, 15, is not
> uncommonly too few. You can increase the depth by setting the Focal
> Distance higher. The problem then is "waves" of in and slightly out of
> focus. It also increases with smaller apertures, but that often requires
> compromises of shutter speed and/or ISO.
> ------------------------------
> Speaking of mushroom shots; From an essay on the US Oly website:
> FOCUS STACKING AND BRACKETING WITH THE E-M1 MARK II
> BY OLYMPUS VISIONARY PETER BAUMGARTEN
>
> "BRACKETING VS. STACKING
>
> I have found the built-in focus stacking to be remarkably accurate. So why
> would you opt for bracketing vs. stacking? Here are a couple of reasons:
>
> The stacked image is trimmed. Regardless of subject, which lens you
> use, or whether you use a tripod or not, the final stacked image is trimmed
> along all four edges. The final image remains the same size (5184 x 3888px
> for the E-M1 Mark II), which means some interpolation must be going on.
> This must be taken into account when composing the shot.
>
> Details vs distance. The fungus below had countless stalactite-like
> fingers and was about 15 cm from front to back, a fair distance for a macro
> shot. I attempted to use the stacking feature, which only brackets and
> stacks 8 photos. After some experimenting with the focus differential
> settings I had to compromise. I could capture the details of the front
> fingers but loose the details in the back, or I could capture the entire
> distance, but have too much interpolation that would blur out some of the
> fingers. Not willing to compromise I opted to use bracketing instead."
>
> In other words, it doesn't even please one of their "visionaries" <
> http://www.getolympus.com/us/en/focus_stacking>
> ------------------------------
>
> One common problem with stacking is subject movement. Both of my common
> subjects, flowers and "bugs", have this distressing tendency to move while
> the set of exposures is being made. This creates "ghosts", overlaps, etc.
> With Focus Stacking, any artifacts are baked into the one JPEG.
>
> With Focus Bracketing, the whole set is available and is to be aligned and
> blended in post. In PS, that gives me great control in correcting them.
> Yep, most outdoor shots require a bit of TLC.
>
> Thnx in advance!
>>
>
> OK, you owe me a beer. ;-)
>
> Well Bracketed Moose
>
>
> --
> What if the Hokey Pokey *IS* what it's all about?
> --
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