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playing with the iso

playing with the iso
Photo Information
Copyright: jaap polak (carper) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1973 W: 119 N: 2582] (8439)
Genre: Animals
Medium: Color
Date Taken: 2007-08-04
Categories: Insects
Camera: Canon 400D Digital Rebel XTi, Tamron 90mm macro
Exposure: f/22, 1/125 seconds
Photo Version: Original Version, Workshop
Date Submitted: 2007-08-08 7:27
Viewed: 4267
Points: 42
[Note Guidelines] Photographer's Note
Sympetrum sanguineum / Ruddy Darter female /.

Common name: Ruddy Darter

Preferred environment: shallow well-vegetated lakes and ponds often in woodland. In Ireland associated with pools in fens and cutover bogs, small base-rich mesotrophic lakes and turlough-like lakes.

Flight period: mid June to mid October. In Ireland early June to mid September.

Adult habitat and habits: adults perch on edge of open spaces when feeding. Mature males occupy perches near breeding sites and defend small area around them. Perches often changed if no females encountered. Females are intercepted as they approach breeding sites and taken in tandem by males to bushes for copulation.

Oviposition site and behaviour: females oviposit usually when in tandem with male, over open water, clumps of plants or exposed muddy margins by dipping abdomen on water surface to wash off batches of eggs.

Larval habitat and habits: eggs either hatch within a few days of laying, or if laid late in season eggs will diapause until spring. Larval development takes one year. Larvae live amongst roots of aquatic plants including Typha and Equisetum.

Emergence behaviour: on vertical plant stems in early morning.

Range: southern and central Europe to southern most Fennoscandia, and to western Siberia. Absent from most of Mediterranean islands, southernmost Iberia and Italy. Very local in north Africa. In Ireland found as far north as Lough Neagh but principally in Midlands and Burren.

Determination of adults: species is keyed and diagnostic characters are figured in Askew (1988); mature adults are illustrated in colour in Askew (1988) and Brooks (1997).

Determination of larvae: keys to mature larvae in Askew (1988) and Brooks (1997).
Nelson, B., Thompson, R. & Morrow, C., 2000 (May 2). [In] DragonflyIreland http://www.ulstermuseum.org.uk/dragonflyireland

Widespread and locally common in suitable sites. Adults can be seen between mid June and September. The Ruddy Darter is found in fens, cutover bogs and small lakes including turloughs. There is some evidence for immigration.

This species is most likely to be confused with the Red-veined Darter Sympetrum fonscolombei and the Common Darter Sympetrum striolatum however the latter is more orange-red and has a straight sided abdomen and yellow stripes on the legs. Female Ruddy Darters are similar to female Black Darters Sympetrum danae however in the former there is no black triangular marking on the thorax.

-mature males have noticeably waisted blood-red abdomen
-females dull yellow brown
-legs all black in both sexes


I said it by the title. I have played with the iso here. I had it here on 800 iso. and I must say what a quality for this high. I hope you like the pov and the quality. Have a nice day.
gr. jaap

Alex99, Argus, cataclysta, Ken52, Pentaxfriend, SunToucher, ridvan, marhowie, uleko, pablominto, ramthakur, jhm, hansh, CatherineD has marked this note useful
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ThreadThread Starter Messages Updated
To Argus: ivan bedanktcarper 1 08-08 08:36
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Critiques [Translate]

jaap!excellent picture!sharp,beautiful,BG extra,action of holding very nice!

Uma belissima foto de qualidade ótima meus parabéns.

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2007-08-08 8:30]
  • [+]

This is an amazingly sharp and noise free result for ISO 800. For that you should have credit and the composition and BG are excellent.
However this is not O. cancellatum. This is a female Sympetrum sanguinum. You can see this by the little spike (vulvular scale) near the underside of the tip of the body.
I'll try to be more libral in the use of ISO 800 in the future! Many thasnks.

I like the composition light and color on your photo. I think that the buckground is litlle bit disturbing (rely little bit) and you could blur it a little bit. The sharpnes is pretty good.
I like also a frame
Best wishes

  • Great 
  • Ken52 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 636 W: 93 N: 1243] (4195)
  • [2007-08-08 9:34]

You did get outstanding results with your camera settings. I think the fears of noise in the higher ISOs are exaggerated. The bottom line is that if you have good light in your photo, noise is not usually an issue. The light is excellent in your shot and the details are outstanding. Colors are wonderful.
I don't have a macro lens, but I have noticed that I get the best detail when I use the smallest aperture light will allow and especially if I don't use the full focal range of my 300mm lens.

Hallo Jaap,

Mooi shot van deze libelle
Scherpte, details, kleur, POV en DOF zijn perfect
compo vindt ik persoonlijk wat minder door al het houtwerk
het doet me wel goed weer wat van je te zien

TFS Thijs

  • Great 
  • ridvan Gold Star Critiquer/Gold Note Writer [C: 498 W: 0 N: 1136] (5205)
  • [2007-08-08 10:05]

selam jaap , excellent shot and very good composition of this d.fly nice pov and bg with splendid colours.great work
Well done !
Regards ridvan

Excellent macro Jaap, I see we're using the same camera at the moment :)
Everything looks fantastic mf, Great Work!

Hello Jaap,
Excellent details in the insect!
Effective point of view resulting in this fine composition, macro work is well done...
Good natural colours and sharp fine details!
Pablo -

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2007-08-09 0:26]

Hi, dear Jaap.
What a pleasure to read your warm greetings. I am very touched and glad to see you here with new picture and, if I am not mistaken, new camera. My congratulations and wishes to take many nice pictures as this one.

It is interesting, these days I played with ISO too. My camera is one of the best among its competitors at this respect. I applied ISO 1600 and got very good shots but yours is not very good it is perfect. Terrific details, clearness and brightness of the colours, excellent lighting and amazing subject. My compliments and best regards.

Hallo Jaap,
Wat leuk om weer een foto van je te mogen zien. Altijd weer prachtig hoe je deze kleine beesten zo mooi op de foto weet te krijgen. De scherpte van de foto is weer super. Het licht heeft deze keer een erg mooie reflectie weten te vormen over het gehele lichaam. Scherpte diepte is perfect en het feit dat je ISO800 hebt gebruikt is totaal niet te zien.

:) komt morgen

Hi Jaap,
This is an excelent close-up...well done.Everything is in crystal clear detail from body to wings and your DOF has created a perfectly blurred backdrop to make it stand out.Well done and TFS.
Regards, David

With your camera settings, you have created a razor sharp image of this pretty dragonfly, Jaap. I also love the BG patterns in this image.
Thanks for your kind words on my new picture.
Warm regards.

  • Great 
  • wuta Gold Star Critiquer/Gold Note Writer [C: 855 W: 2 N: 617] (2142)
  • [2007-08-09 11:11]

Hallo Jaap , Hij bleef er weer goed voor zitten , mooi scherp kleuren pov en bg erg goed ,Groeten Teunie .

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2007-08-09 19:58]

Hello Jaap

A very good capture of this dragonfly.The details are sharp with excellent focus.Surprisingly noise free at 800 ISO.The illumination is very good,producing vivid colours.The POV and DOF are lovely.A very well composed and presented post.TFS


  • Great 
  • SkyF Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2234 W: 188 N: 1912] (8073)
  • [2007-08-14 5:36]

Hello Jaap,
fabulous capture, the detail is amazing. Very sharp and the DOF is very nice.
Beautifully composed with a nice placing of the subject and great colors.

  • Great 
  • jhm Gold Star Critiquer/Gold Note Writer [C: 893 W: 0 N: 507] (1853)
  • [2007-08-16 9:46]

Hallo Jaap,

Man die staat er allang op zonder dat ik hem gezien had, nochtans weer een van die mooie libellen, nu eens uit en totaal andere hoek genomen, maar dit valt best mee Jaap.U bent een specialist in deze materie. Proficiat.


  • Great 
  • hansh Gold Star Critiquer/Gold Note Writer [C: 277 W: 1 N: 741] (2762)
  • [2007-08-24 10:05]

Dag Jaap.
De canon's kunnen goed overweg met een hogere iso zonder al teveel ruis te krijgen. Ik heb mijn camera bijna standaard op iso 400 staan en dat gaat prima. Deze libel het je er mooi opstaan, scherpte is goed en de compositie vind ik mooi.
Gr. Hans

  • gerhardt Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1936 W: 244 N: 4106] (11620)
  • [2007-09-08 7:17]

Goedendag mijn vrind Jaap. Hoe gaan dit met jou? :)

I trust you keep well mf? Your macro work is still as good as ever. Well done.

Hi Jaap,
I don't know how you do that! I never was able to capture correctly a Dragonfly in my life! Focus is never OK... I'm amazed by this ISO you used as there is no trace of noise at all. This is well detailed and exposed. A little jewel! Thanks,

  • Great 
  • EOSF1 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1393 W: 119 N: 5267] (23955)
  • [2008-01-22 7:15]

Hello Jaap ! Fantastic macro, very sharp, well exposed and good composition, well done ! Thanks,


Great shot Jaap! And the sharpness is excellent on the all dragonfly, not easy! Thanks for sharing,

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