[Leica] A mistake that is kind of interesting

Howard L Ritter Jr hlritter at bex.net
Sun Apr 16 05:31:06 PDT 2023


I wouldn’t say that some of the edges are fuzzy. It’s that some of the petals are displaced in some of the images, with overlapping sharply focused “ghosts”. Seems pretty clear that something moved the flowers or the petals between exposures, with the shutter freezing the petals if they were in motion at the instant of exposure. Given the subject matter, I’d guess this is due to the wind moving the petals between exposures. Or could there have been little critters in or on the plant?

Stacking multiple exposures is standard practice in astroimaging, where bright objects like the Moon and planets are distorted by atmospheric turbulence, and faint deep-sky objects can be barely above the noise level. But I haven’t seen it done with subjects like this. What are you trying to accomplish?

—howard

> On Apr 15, 2023, at 7:29 PM, Aram Langhans via LUG <lug at leica-users.org> wrote:
> 
> I was stacking photos of a cactus flower I took this AM and it looks a bit weird.  Kind of sharp and blurry at the same time. The centers of the flowers turned out nice but the edges of the petals are fuzzy.  Not sure what happened.  Maybe wind but I did not feel much wind.  I am going to have to look at each of the 14 shots to see what happened.  Not my favorite thing to do on my laptop.  Might wait until I get home and can use a real monitor. But it was interesting enough I thought I'd post it for comments and maybe someone knows what happened.
> 
> Cactus-1001570-Edit.jpg | Aram Langhans | Flickr <https://www.flickr.com/photos/24330215@N06/52819540142/in/dateposted/>
> 
> Aram
> 
> -- 
> Aram Langhans
> (Semi) Retired Science Teacher
> & Unemployed photographer
> “The Human Genome Project has proved Darwin more right than Darwin himself would ever have dared dream.”
>   James D. Watson
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