Search found 91 matches

by RDolz
Thu May 14, 2020 9:39 am
Forum: Equipment Discussions
Topic: Zeiss S Planar 25 1.6 micro lithography lens reversed
Replies: 10
Views: 889

Chuong, Again excellent work and ... overwhelming resolution!!. I did not know that these optics had been designed for such long wavelengths. I believed that the optics in this series were optimized for wavelengths less than 480nm. Here is the link to the excellent Marco Cavina website where these l...
by RDolz
Thu May 14, 2020 8:34 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Diatoms stereo
Replies: 11
Views: 989

Steve,

It is an impressive set, and the 3D vision is spectacular. It allows us to visualize the morphology of these algae in a totally illustrative way. Congratulations.

Congratulations.=D>
by RDolz
Wed May 13, 2020 9:35 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: ipod touch 4th gen screen
Replies: 2
Views: 648

Hi:

An amazing image !!
Can you put a link to see the second image with full resolution?
by RDolz
Fri May 08, 2020 1:48 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Asia Murder Hornet
Replies: 8
Views: 1488

Hello Chuong: Yes, it is very clear to me. It is also an impressive setup, and shows your improvements to achieve telecentricity with the Rayfact: an adjustable tube and a mechanical iris. I am always fascinated by the setups we have to do to get a good image, ..... Congratulations, do not stop uplo...
by RDolz
Thu May 07, 2020 11:02 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Asia Murder Hornet
Replies: 8
Views: 1488

Hello: an impressive image!!.

Out of curiosity: how does the Nikon Coolscan 800 behave vs the Nikon Rayfact 95mm f2.8?

Could you show the setup to make the Rayfact telecentric?

The best
by RDolz
Fri Apr 10, 2020 3:22 pm
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Spiked
Replies: 18
Views: 7043

Beatsy:

the tungsten needle is amazing !!

I love the image and the comparison with the scales so that we can get an idea of the dimensions. Perfect!! =D>

Best
by RDolz
Sat Apr 04, 2020 5:15 am
Forum: Equipment Discussions
Topic: Bellows for Canon EOS
Replies: 18
Views: 3171

Hi. I have a Fuji X-T1 and I use an Olympus Bellows, .. it is very solid and works perfectly. To adapt to the Olympus mount on the front of the bellows, there are adapters on eBay for mounting lenses with 49mm filters in reverse mode (many Zuiko have this thread diameter). For example at the moment ...
by RDolz
Thu Apr 02, 2020 3:35 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fly foot
Replies: 16
Views: 2328

Hi Oscar, Yes, it has impressive sharpness. Other free ways to display your images with FULL resolution are www.prodibi.com or www.easyzoom.com Here are some examples that I uploaded to the forum. They are images captured with the Coolscan 8000, the Coolscan 4000 and the Dimage 5400. All in telecent...
by RDolz
Wed Apr 01, 2020 10:33 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: SONY AWARD
Replies: 16
Views: 3747

Adalbert: congratulations, fantastic recognition for a job well done ... and good luck =D>
by RDolz
Wed Apr 01, 2020 6:13 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fly foot
Replies: 16
Views: 2328

Hello Oscar: That image seems to me astounding, I like the light and the perspective of it (an unusual point of view). Congratulations. I agree that the lump on the claw is strange, and looking at the morphology of the claw it appears that it is deformed by that body. Is it not the product of a malf...
by RDolz
Sat Mar 28, 2020 10:46 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Zerene Stacker now has dust & hot-pixel removal
Replies: 52
Views: 10821

Hello, I downloaded the Beta version to test the new feature, “Use dust & hot pixels mask”. I have tested it to eliminate the hot pixels and, (as could not be otherwise), it works perfectly!! It took me a while to make the mask, but in the end, with photoshop, it was easy. The main problem is detect...
by RDolz
Fri Mar 27, 2020 3:49 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Zerene Stacker now has dust & hot-pixel removal
Replies: 52
Views: 10821

Rik: good job and very helpful. =D> In my case my main problem is the dead and hot pixels. I work with the Fujifilm X-T1, a camera that does not have the ability to map faulty pixels. So I had an action in photoshop that eliminates the hundreds of pixels that show defects in long exposures. (action ...
by RDolz
Fri Nov 22, 2019 10:10 am
Forum: Nature Photography -- Macro and Close-up
Topic: Macro set from the weekend - II
Replies: 5
Views: 1352

as always, stunning images!!. =D>

I am surprised by emoji eggs (Pentatomidae): does anyone know the function of the parts of the egg that generate that design?
by RDolz
Fri Sep 27, 2019 12:59 pm
Forum: Equipment Discussions
Topic: Comparing macro lenses using MTF - invitation
Replies: 18
Views: 3364

You should keep in mind I'm doing all those test for pure fun and without any financial support from any side. I have bought Imatest program back in 2004. when I was doing lens reviews and tests for national photography magazine. Investing in testing gear and software made sense back then but now i...
by RDolz
Fri Sep 27, 2019 3:54 am
Forum: Equipment Discussions
Topic: Comparing macro lenses using MTF - invitation
Replies: 18
Views: 3364

I wonder if you have done any similar tests regarding the effect of using different sensors. Never directly but since 2004. I have "imatested" literally hundreds of lenses using different cameras I owned: Nikon D200, D300, D7000, D7100 and Fuji X-T1 & X-T2. On some occasions I used the same lens wi...