Penny macro contest - revisited


Darkmunk

Link Posted 13/04/2014 - 21:27
Once again the mighty little m50 1.7 shows its quality.
Little over-exposed Chris, but nice and sharp
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dougf8

Link Posted 14/04/2014 - 21:10
2nd attempt, done quickly, as you get closer it gets more difficult with focus and stopping the whole shebang waggling about, especially on the wooden floor, I'll do it on something solid next time. Might be lucky with a wider angle lens on ebay if the bids come off. Cost of lens assembly roughly 80 + 14 + 15 + 20 + 1 (tape), 130ish. Not going to win sharpest, or biggest, still it's fun trying. No macro lenses were used in the creation of this image.




DA35mm f2.4 reversed wide open, Soligor 200mm f11, Jessop 2X Ricoh TC, 68mm extension tubes. Lighting, Sunwayman C10A murky green tint middle brightness stuck on a cardboard tape roll.




Lurking is shirking.!
Last Edited by dougf8 on 14/04/2014 - 21:14

Darkmunk

Link Posted 14/04/2014 - 21:16
ah ha, getting the magnification now
Try stopping it down less. Faster shutter and less chance of diffraction softness.
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dougf8

Link Posted 14/04/2014 - 21:21
Darkmunk wrote:
ah ha, getting the magnification now
Try stopping it down less. Faster shutter and less chance of diffraction softness.

Ta.

And taking beta-blockers, doing some exercise to allow shooting between heart beats, having a 3D macro rail, setting up the axial lighting Nass mentioned, and not being so thick as to wonder why there's no timer MUP with liveview!!!!!
Lurking is shirking.!

Darkmunk

Link Posted 15/04/2014 - 15:11
Total 'hats-off' to Daniel for the much easier set up on the windowsill
Here's my camping setup but with all my extension tubes. No aperture control on 300 so wide open.
No macro lenses, but some expensive glass in there, so not many points for ingenuity. translucent white perspex in sunny window for bright defused light.
3 second exposure.
Looks like the whole shebang could have been straightened up better




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geordie01

Link Posted 15/04/2014 - 15:58
This is getting silly now
I wonder if I can borrow next door's telescope?

tyronet2000

Link Posted 22/04/2014 - 10:22
Not so much a competition entry, just seeing what the WG-10 can do in 1cm macro mode. The built in LED's give insufficient light so had to tilt the camera slightly to allow some light to get onto the subject. I think it's ok for a "free" camera. Image has been resized only.




Haven't tried the WG-10 underwater yet
Regards
Stan

PPG

co049

Link Posted 29/08/2014 - 14:52



Here is another go, Pentax K3, Pentax M bellows, Vivitar extension tubes SMC Pentax-M 28mm F2.8 reversed.

Not as sharp as the 50mm F1.7 but greater mag.
Chris,

Pentax K1ii, K3, K-m & MX-1.
Pentax LX, MX, ME Super & MV.
"Old Skool" with the new!

co049

Link Posted 29/08/2014 - 18:46



Same set up but used Flu Card to control K3
Chris,

Pentax K1ii, K3, K-m & MX-1.
Pentax LX, MX, ME Super & MV.
"Old Skool" with the new!

d-dixon

Link Posted 15/09/2014 - 21:45
Just come across this challenge - great idea and I've had to go and have a quick first go! I've tried to stick to Pentax parts where possible too...


2.5 s exposure, K-5, uncropped.

Here's the setup:






From the bottom up:

- A C. Baker 10 x achromat microscope objective (= 16 mm focal length), working distance ~ 2-3 mm. No aperture, so wide open. Came as part of a 50 microscope, so say 5?
- A Pentax Adapter K for microscope lens (can't remember where that came from).
- A Female K-mount, bodged from a donor teleconverter and used to replace the original M42 mount on:
- Pentax Auto Bellows, M42 mount. 18 (had been horribly abused in a past life).
- T2 adapter to PK, attached to what's left of the original bellows M42 mount.

Light source is a stereo microscope lamp (free, recovered from skip), with light softened by bouncing off 1 sheet toilet paper.

Shutter triggered with a Pentax IR remote in mirror-up mode.

Camera operator perched carefully on a chair to minimise changes in foot pressure giving rise to tripod movement via carpet.

My next attempt will be as above, but with a 40 x microscope objective (4 mm focal length) - working distance will be < 1 mm so lighting is going to be an issue ...


David

Darkmunk

Link Posted 15/09/2014 - 21:52
Ha ha, excellent stuff, love it
Looking forward to seeing the next one
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tyronet2000

Link Posted 15/09/2014 - 22:08
What amazes me it the amount of surface "damage and deposits" on the coins goodness knows what some of it is
Regards
Stan

PPG

co049

Link Posted 11/02/2021 - 18:45
Anyone fancy having another go at this thread while we are in lockdown?

Darkmunk

Link Posted 11/02/2021 - 19:40
It's good fun; I can recommend it.
Bit like shooting the moon: everyone's done it, but that's what makes it challenging and good for comparisons.
I've fixed my links as I moved my website a few years ago.
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Lubbyman

Link Posted 11/02/2021 - 20:29
Well, seeing as how:
a) earlier this week I ordered some coupling rings and other bits and pieces to see how much usable magnification could be squeezed out of the lens collection; and
b) since placing the order I've been wondering what to use for the first subject...
... it would be perverse to refuse this invitation.

Steve
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