Search found 158 matches

by Guppy
Tue Mar 31, 2020 3:13 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Eye spot
Replies: 1
Views: 1715

Eye spot

Hi A small eye spot of 2.8 mm in diameter. https://up.picr.de/38185199st.jpg http://files.homepagemodules.de/b649264/f7t3486p26906n2_FKibTuED.jpg Kamera: Nikon D810 Objektiv: Laowa 25mm F 2.8, 2.5-5X Ultra Macro Belichtungszeit: Blitz Blende: 2.8 ISO: 64 Beleuchtung: 4 Blitzgeräte Diffusor: Weisser ...
by Guppy
Sun Mar 29, 2020 1:30 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Scales
Replies: 3
Views: 1311

voila
Image
Kurt
by Guppy
Sun Mar 29, 2020 7:25 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Scales
Replies: 3
Views: 1311

Scales

Hi It's butterfly scales time https://up.picr.de/38169443ev.jpg http://files.homepagemodules.de/b649264/f7t3482p26892n2_PwqApJaK.jpg Kamera: Nikon D810 Objektiv: NIKON M Plan, 60/0.7 ELWD, 210/0 Belichtungszeit: Blitz ISO: 64 Beleuchtung: 4 Blitzgeräte Diffusor: weisser Trinkbecher Aufnahmedateiform...
by Guppy
Wed Mar 25, 2020 2:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Rik (The D810 falls into the category of cameras that is called "ISO invariant") There is a lot of writing, I measured it myself years ago up to ISO 2000, it is indeed so. :D In my comparison, a subsequent brightening was minimally better from ISO 500 on, like higher ISO numbers. An important dif...
by Guppy
Tue Mar 24, 2020 1:35 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Rik

I wanted to keep the flash-burn time short.
An underexposure in RAW format is not tragic.
The noise of a Nikon D810 can be removed very easily at 60:1.
I could have also increased the ISO number.

Kurt
by Guppy
Tue Mar 24, 2020 10:08 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Chris, hi Marco

Yes, sorry I made a mistake, the correct histogram in RawDigger looks like this:

Image

Kurt
by Guppy
Tue Mar 24, 2020 2:09 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hello Rik

"what program made this display?"
RawDigger

This RAW file is in 14Bit RAW format, i.e. NEF from Nikon D810.
Please note that the Y-axis range is logarithmic,
so I can see individual highlights better.

Kurt
by Guppy
Mon Mar 23, 2020 3:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Marco
24.03.2020
This histogram is wrong, see histogram on next page.
Sorry

Image

I hope it helps you

Kurt
by Guppy
Thu Mar 05, 2020 4:53 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Thanks a lot Mike

I use several YONGNUO YN 560 III for many years and was lucky, no problems!
But use them only with throttled power,1/128 to maximum1/32.
Over 1000 flashes in a row are quite possible.

Kurt
by Guppy
Mon Mar 02, 2020 4:51 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Different scales
Replies: 6
Views: 4142

Hello Viktor

With the NIKON M Plan, 40/0.5 ELWD, 210/0 and the NIKON M Plan, 60/0.7 ELWD, 210/0
I have no problems with color fringes caused by CA.
But at full size, it is necessary to crop the image left and right to the square.

Kurt
by Guppy
Mon Mar 02, 2020 2:26 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Different scales
Replies: 6
Views: 4142

Hi

I have learned a lot in this forum over the past 10 years and switched to Zerene Stacker.
A special thanks goes to Rik, the administrators of the Photomacrography Forum and the users.
It's a pleasure that you like my picture so much.

Kurt
by Guppy
Sun Mar 01, 2020 5:46 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Weevil eye/scales
Replies: 10
Views: 2452

A very nice picture, I like it very much.
Kurt
by Guppy
Fri Feb 28, 2020 3:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Mike I need light from 4 directions. The brightness of the YONGNUO YN 560 III at 1/128 is usually sufficient. https://up.picr.de/37965895dx.jpg Adorama XPLOR 600, $ 549.00 (4 x $ 549.00 = $ 2196.00) Flash Duration - 1/220s to 1/10000s T0,1 or T0.5 ? Adorama XPLOR 400 Pro, $ 649.00 (4 x $ 649.00 =...
by Guppy
Fri Feb 28, 2020 9:33 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Mike

My text is over 10 years old and it still applies to most pseudo studio flash units used by amateurs. :)

Kurt
by Guppy
Fri Feb 28, 2020 8:33 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 5611

Hi Quick and dirty The upper curve shows the pressure wave, the lower curve the flash light. First at full power of the YONGNUO YN 560 III. The blast is during the flash. https://up.picr.de/37963669su.jpg Next curves at 1/16 power https://up.picr.de/37963671wc.jpg Next curves at 1/32 power, which I ...