Search found 1842 matches

by Beatsy
Tue Apr 26, 2022 2:07 pm
Forum: Equipment Discussions
Topic: Adjusting ‘Z’ in the Field
Replies: 8
Views: 363

Re: Adjusting ‘Z’ in the Field

... Are you speaking of the Wimberley MH-100 Wimberley MonoGimbal Head or the like? ... Yes, that's the one I have. I initially got it to use with a 400/2.8 prime and discovered the macro application afterwards. I use it roughly equally for both now. BTW. I assume you're basically using this for co...
by Beatsy
Tue Apr 26, 2022 8:20 am
Forum: Equipment Discussions
Topic: Adjusting ‘Z’ in the Field
Replies: 8
Views: 363

Re: Adjusting ‘Z’ in the Field

Ah, z as in up and down. I use a monopod with a small side- mounting tilt head ( or gimbal) made by wimberly. The lens tripod foot goes in this and the lens/ camera rotates to any orientation in the ring. The monopod is offset to the side of the camera, not under it, so it needs to be sturdy if usin...
by Beatsy
Tue Apr 12, 2022 10:28 am
Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
Topic: Radiolaria
Replies: 12
Views: 869

Re: Radiolaria

Those are nicely lit and imaged. The lack of flaring is especially good - really clean. Cheers.
by Beatsy
Tue Apr 12, 2022 1:46 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Another hairy deep-stack. Face on bluebottle.
Replies: 1
Views: 244

Another hairy deep-stack. Face on bluebottle.

Buoyed by recent success with deep-stacked hairy critters not coming out too hazy, I took a short break from current "difficulties" with diatoms (another story, another day) and tried a couple more. For this one, the back end of the fly is glued to a thin strip of coverslip that acts like a (fragile...
by Beatsy
Mon Apr 11, 2022 5:25 am
Forum: Photography Through the Microscope
Topic: Jamin-Lebedeff diatoms
Replies: 4
Views: 284

Re: Jamin-Lebedeff diatoms

These colour-contrast techniques often look somewhat smeared with colours barely relating to the feature(s) of the subject That's certainly not the case here. Beautiful and crisp. It actually brings more clarity to the details too. I've never tried it, and probably never will, but I may have to re-e...
by Beatsy
Mon Apr 11, 2022 5:15 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp Tongue 10x
Replies: 3
Views: 305

Re: Wasp Tongue 10x

I love "zooming in" to parts and details and this is one I've not seen before. Nicely done.
by Beatsy
Sat Apr 09, 2022 1:09 am
Forum: General Discussion Forum and Community Announcements
Topic: The Insect Crisis
Replies: 5
Views: 407

Re: The Insect Crisis

Similar observations here Mark. The most obvious one for me is the loss of small flying insects. If I sit at the north side of the garden looking toward the shaded south side (tall fence), the brightly lit insects jump right out against the shade. It was only 10-15 years ago that there were clouds o...
by Beatsy
Mon Apr 04, 2022 11:37 pm
Forum: Equipment Discussions
Topic: Dodging the infinity hump
Replies: 26
Views: 1508

Re: Dodging the infinity hump

I'm still scratching my head a little, trying to get solid on how all this fits together. <snip> It's always possible that I've missed something, but I think the advertised benefit of a factor of RI squared applies only when the comparison is made against the dry NA of the rear optics that pair wit...
by Beatsy
Mon Apr 04, 2022 11:23 pm
Forum: Equipment Discussions
Topic: Dodging the infinity hump
Replies: 26
Views: 1508

Re: Dodging the infinity hump

Mounting diatoms in arsenic trisulfide with a high refractive index (sapphire!) coverslip utilised could be a fun route to explore as well: https://en.wikipedia.org/wiki/Arsenic_trisulfide Colloquially known as "realgar", refractive indices up to 2.45. Yeah, I've looked into that, but it involves s...
by Beatsy
Mon Apr 04, 2022 10:47 am
Forum: Nature Photography -- Macro and Close-up
Topic: Big wolf
Replies: 3
Views: 413

Re: Big wolf

Great images. Were these photographed after you released them? I'd have thought they'd scuttle out of sight as soon as they could. Also: I usually moan that folk outside the UK get all the best critters to photograph. But I think you're welcome to these. I don't mind "normal-sized" spiders at all, b...
by Beatsy
Mon Apr 04, 2022 10:39 am
Forum: Nature Photography -- Macro and Close-up
Topic: Parsnip Seed 2.5x
Replies: 7
Views: 553

Re: Parsnip Seed 2.5x

A perfectly competent stack, nicely processed, what's not to like? A pleasing image. One observation on light direction(s). The lighting looks a smidge "halloween" to me due to a slight emphasis of light from above *and* below. Nothing wrong with that, it's subtle, but just noting it. But if this sa...
by Beatsy
Mon Apr 04, 2022 8:07 am
Forum: Equipment Discussions
Topic: Dodging the infinity hump
Replies: 26
Views: 1508

Re: Dodging the infinity hump

If you ever get an SIL objective working you will be a true hero. I think any enthusiast who has run across them has been curious what those marvelous NAs might reveal, but so far nobody's had the gumption as far as I know. I sure haven't anyway. Won't be me. The RI of the substrate (which would be...
by Beatsy
Mon Apr 04, 2022 3:19 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Spinnerets on a tiny spider
Replies: 4
Views: 346

Spinnerets on a tiny spider

Trying to stick this spider to a 3mm glass sphere, with front end raised and the back end in a dab of resin, I twitched. The end result was exactly the *kind* of pose I wanted and in the right place on the sphere, but with the spider facing completely the wrong way around. Front end stuck in wet res...
by Beatsy
Mon Apr 04, 2022 2:59 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: First Bee Of The Year!
Replies: 2
Views: 284

Re: First Bee Of The Year!

Smashing images and great technique with the handheld stacking. Love the "light airy" look of the first two, but the feeding shot is my fave. Top notch. Ta.
by Beatsy
Sat Mar 26, 2022 1:48 pm
Forum: Equipment Discussions
Topic: Shrinking a light source
Replies: 8
Views: 879

Re: Shrinking a light source

Interesting stuff, Beatsy I have few questions: - did you finally needed to shrink the COB output? No, all the results above are without any reduction optics. I would still like to reduce it in principle, but don't need to. I think it would add bulk too - and I rather like this more compact outcome...