two bargains

[Adalbert]

Hello everybody,

I have just received my new bargains and stacked using focus-bracketing the test-picts:

1.) Mitutoyo M 50 / 0.65

https://live.staticflickr.com/65535/503 ... f50d_o.jpg

2.) Olympus UMPlanFI 50x/0,80

https://live.staticflickr.com/65535/503 ... 094f_o.jpg

BTW, both using M6MII & EF70-200L & FB at the step-size 1

Best ADi

[Macrero]

Nice high-mag stacks. Flashes are certainly helping, with my continuous light rig it is quite more complicated. Light is a tad hard to me, but detail is excellent, though maybe a little oversharpened.

Best,

- Macrero

[Adalbert]

Hi Macrero,

These stacks have been illuminated by the LED because M6MII doesn’t support any flash at the focus-bracketing.
My current LED illumination is not strong enough, so I had to use the exposure time of 2 seconds
I have already been looking for the COB-LED 100W (driver and heat sink too).

Best , ADi

[Macrero]

Hi Adi,

lighting on these scales do looked very different to me than in previous photos you've shared. Maybe in order to avoid shooting at several seconds exposure time you have used a weak diffuser?

While not optimal, LED lighting at high-mag's is viable if your setup is sturdy and you use powerful enough LEDs.

- Macrero

[Saul]

...My current LED illumination is not strong enough, so I had to use the exposure time of 2 seconds ...

Why 2s is wrong ?
My optimal exposure time is 4-5s (I know, that lot of guys are using even longer exposure), even at high magnification.

[Adalbert]

Hi Saul,

My experience at the high magn is: the shorter the exposure time the better the quality of the stack.
Firstly less negative influences of the vibrations secondly lower noise level.

Therefore I usually use flashes at the lowest power (1/128) and trigger them between the curtains.
Unfortunately it cannot be done during the internal focus-bracketing of the M6MII

So, I have just added some LEDs to my rig and reduced the time to ½ sec:

https://live.staticflickr.com/65535/503 ... fede_o.jpg
So, I would say that the resolution is a little bit better.

Best ADi

[MarkSturtevant]

Very nicely done.