Search found 16 matches

by Thomas
Wed Oct 14, 2020 1:11 pm
Forum: Equipment Discussions
Topic: Can I push the resolution of a 1:1 macro lens?
Replies: 23
Views: 4785

Re: Can I push the resolution of a 1:1 macro lens?

enricosavazzi wrote:
Wed Oct 14, 2020 9:20 am
Perhaps there is a server cache or something else that does not update immediately.
Your server issues only a "Last-Modified" header which might not trigger a cache validation in all situations. Try to add an "ETag" or simply no-cache and related cache headers.
by Thomas
Tue Oct 13, 2020 5:08 pm
Forum: Equipment Discussions
Topic: Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x
Replies: 4
Views: 1757

Re: Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x

.. does the change in magnification cause some problems when stitching the frames together? I haven't tested the full range 0.38m .. inf, as I never needed it. This could probably be tested with any other lens. The range 0.52m .. inf does not appear to create problems with Zerene, Helicon, nor Adob...
by Thomas
Sun Oct 11, 2020 9:15 pm
Forum: Equipment Discussions
Topic: Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x
Replies: 4
Views: 1757

Re: Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x

Here is an example to demonstrate sensor coverage.

3 types of sugar: Top: Jaggery. Right: Raw sugar. Bottom 3: refined white sugar.

EOS RP + Sigma 150mm + Nikon CFI Plan Achromat 10x.
Sigma at f/2.8.
Full frame image (6240x4160). Stacked, sharpened, scaled to conform to forum rules.

Sugar.jpg
by Thomas
Sun Oct 11, 2020 9:00 pm
Forum: Equipment Discussions
Topic: Can I push the resolution of a 1:1 macro lens?
Replies: 23
Views: 4785

Re: Can I push the resolution of a 1:1 macro lens?

lothman wrote:
Sun Oct 11, 2020 2:52 am
..what is the max stack depth in mm you can achieve with the 150mm macro lens together with the 10x lens.
I created a new thread to avoid polluting this one or the OP's unrelated question.

http://www.photomacrography.net/forum/v ... 25&t=42539
by Thomas
Sun Oct 11, 2020 8:53 pm
Forum: Equipment Discussions
Topic: Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x
Replies: 4
Views: 1757

Canon EOS RP + Sigma 150mm Macro + Nikon CFI Plan 10x

I use and quite enjoy this combination as my hobby setup and thought I share some details to also cover a couple of questions people raised. * Canon EOS RP. Full frame, 26 MP (6,240 x 4,160), 5.76 µm/px, built-in focus stacking. * Sigma 150mm 1:2.8 APO EX DG HSM Macro. * Nikon CFI Plan Achromat 10x ...
by Thomas
Sun Oct 11, 2020 2:33 am
Forum: Equipment Discussions
Topic: Can I push the resolution of a 1:1 macro lens?
Replies: 23
Views: 4785

Re: Can I push the resolution of a 1:1 macro lens?

But I'm really interested in your experience with the EOS RP as that is the camera I'm considering. When you talk about stacking, can you use the RPs internal focus bracketing with the Sigma lens? That would amazing. I'm very happy with the RP. * Stacking works just fine with the Sigma 150mm, as we...
by Thomas
Wed Oct 07, 2020 12:32 am
Forum: Equipment Discussions
Topic: Can I push the resolution of a 1:1 macro lens?
Replies: 23
Views: 4785

Re: Can I push the resolution of a 1:1 macro lens?

My questions: Would I be able to see a little more detail resolved if I a) Pushed this lens past 1:1 with extension tubes or a teleconverter? How quickly would I reach empty magnification? b) Chose a camera with a smaller pixel pitch? How many megapixels would I need on a FF sensor to make full use...
by Thomas
Mon Nov 18, 2019 3:18 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Ant Pupa - 7.5x - Canon EOS RP - Nikon CFI 10x
Replies: 2
Views: 1163

Re: Ant Larva - 7.5x - Canon EOS RP - Nikon CFI 10x

Jittebug wrote: Perhaps slabbing/substacking could help?
Thanks. I'll give it a go.
by Thomas
Mon Nov 18, 2019 12:01 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Ant Pupa - 7.5x - Canon EOS RP - Nikon CFI 10x
Replies: 2
Views: 1163

Ant Pupa - 7.5x - Canon EOS RP - Nikon CFI 10x

Ant pupa. Live. Size ~0.83mm. Canon EOS RP + Sigma 150mm macro + Nikon CFI 10x MRL00102. f/2.8; ISO 640; 1/200s. Lighting: 2x 15W COB LEDs through white foam wrap diffuser. Stack of 200. Pixels on 1:1 crop: 0.768μm/px Questions: Tech: In general, with near-white subjects I have problems with white h...
by Thomas
Mon Sep 30, 2019 1:48 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Canon EOS RP Focus Stacking
Replies: 15
Views: 3958

Re: Canon EOS RP Focus Stacking

davholla wrote:Interesting, the Sigma 150 mm is not even supported, have you tried this free hand?
Not sure what you mean with "not supported". It works in all usage scenarios I have thrown at it so far and it's pin sharp.

* Sigma 150mm 1:2.8 APO MACRO DG HSM

Bought quite a number of years ago.
by Thomas
Sun Sep 29, 2019 2:09 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Canon EOS RP Focus Stacking
Replies: 15
Views: 3958

Pau wrote:Did you make it working inside EOS Utility or outside it (like mouse clicker)?
External. User input / Mouse-click injection.
by Thomas
Sun Sep 29, 2019 1:21 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Canon EOS RP Focus Stacking
Replies: 15
Views: 3958

After my last update I can see a focus stack option in its menu but it doesn't work with the files generated with my 7D Not sure if my previous comment actually answered the second part of your question. If you're talking about creating stacks: You can't use EOS Utility 3 to create a stack with cam...
by Thomas
Sun Sep 29, 2019 1:02 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Canon EOS RP Focus Stacking
Replies: 15
Views: 3958

Pau wrote:Thomas, have you tried to process the stack with Canon DPP?
Briefly only a while back.

I can't formally judge its performance but think Zerene and Helicon likely give better results. Didn't spend much time on it. Not sure why your image source (7D) would be relevant.
by Thomas
Sun Sep 29, 2019 12:46 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Canon EOS RP Focus Stacking
Replies: 15
Views: 3958

Re: Canon EOS RP Focus Stacking

Does that mean it works with EOS Utility? Yes. * Canon EOS RP > USB cable > Windows 10 > EOS Utility 3 Use: * Go to EOS Utillity 3 > Remote Shooting * Set Focus bracketing = Enable * Number of Shots = xx (shots for your stack) * Focus increment = xx (focus step size between shots) * Click OK You ca...