[Leica] A mistake that is kind of interesting

[Aram Langhans]

Hi Howard and Douglas.  Tripod and rock solid.  Not sure why. Don't 
think it jiggled as the centers are in good shape.  I was looking at 
some other frames and I noticed while the centers are perfectly steady 
frame to frame, the ends of the petals seem to be expanding in each 
frame. I am thinking that as the day progressed perhaps I caught it at a 
time the flowers were actively opening up for the day so between each 
frame  they changed positions enough to do what they did.  It did not 
appear random like wind or natural disaster but a steady change in 
position outward.   I will look further.  I have never had this happen 
before.

As far as to why stacking,  stacking is often used to increase the depth 
of field without causing the back/foreground to get distracting.  It 
maintains the soft focus in front and behind that you get from say f/8 
without resorting to f/22 where they would become distracting and also 
decrease the sharpness of your main subject due to diffraction effects.  
Hope that answers your question, Howard.

Aram

On 4/16/2023 5:31:06, Howard L Ritter Jr wrote:
> 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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-- 
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