Search found 564 matches

by JKT
Fri Mar 30, 2012 8:16 am
Forum: General
Topic: Most threatened European species
Replies: 2
Views: 183

Re: Most threatened European species

P. apollo is rather numerous on certain parts of the Southern Finland. The area is relatively limited, though. It also seems common in the Alps. E. maturna is not that rare in South-Eastern Finland. Should be quite common in Russia. L. helle is relatively common in some parts of central Finland. The...
by JKT
Tue Jan 17, 2012 7:24 am
Forum: Overseas
Topic: Pyrenees Orientales
Replies: 32
Views: 1431

Re: Pyrenees Orientales

What happens in the far north of the country where the sun never sets? Are butterflies still active at 11pm? Not really. From what I've seen they settle down roughly at 6 pm. On the other hand it makes catching or photographing "night"-time moths much easier ... or you can use that time t...
by JKT
Mon Jan 16, 2012 7:35 am
Forum: Overseas
Topic: Pyrenees Orientales
Replies: 32
Views: 1431

Re: Pyrenees Orientales

David M wrote:I bet the biting flies are bloody everywhere in summer.
Naah. They are are not that bad. North from Oulu its the mosquitoes that will get you. :wink:
by JKT
Sun Jan 15, 2012 4:18 pm
Forum: Overseas
Topic: Pyrenees Orientales
Replies: 32
Views: 1431

Re: Pyrenees Orientales

Well you learn something new every day. I'd always thought the north of Finland was mountainous. :oops: Compared to the rest of the Finland it is. However, on a wider scale even that is quite mild. There are considerable mountains in the Scandinavia, but Finland only reaches to the edges. The highe...
by JKT
Sun Jan 15, 2012 11:59 am
Forum: Overseas
Topic: Pyrenees Orientales
Replies: 32
Views: 1431

Re: Pyrenees Orientales

David M wrote:Yes, but you need to use crampons where you are! :)
Fortunately not. If that was in Finland it would get pretty boring going up and down those 100 m hills. :D
by JKT
Sat Jan 14, 2012 9:55 pm
Forum: Overseas
Topic: Pyrenees Orientales
Replies: 32
Views: 1431

Re: Pyrenees Orientales

I camp at 900m and walk daily to sites between 1800m and 2400m. Ouch! I've done the 1400 up and down exactly once and my legs were sore for a week afterwards. It may have something to do with the hosts being in way too good condition and us trying to match the speed... On the other hand, 1 km up an...
by JKT
Thu Jan 12, 2012 1:12 pm
Forum: Photography
Topic: NEW Sigma 180mm Macro
Replies: 10
Views: 670

Re: NEW Sigma 180mm Macro

A tricky choice just got trickier. Indeed. So far there are two contestants for the Tamron replacement ... and both of them from Sigma. :shock: I think I would have preferred 180/3.5 as the added weight is not welcome on hiking trips. Canon and Tamron, get those upgrades out! My Tamron is in servic...
by JKT
Sun Jan 08, 2012 4:17 pm
Forum: Photography
Topic: Lens
Replies: 7
Views: 507

Re: Lens

MikeOxon wrote:Kenko (same company as Tokina lenses) list the Canon 100L as being AF compatible but I have no personal experience of this combination.
If anyone want's to rely on that, make sure to get the very latest version. The one I bought after I got the C 100 L IS NOT COMPATIBLE!
by JKT
Fri Jan 06, 2012 9:57 am
Forum: Photography
Topic: Lens
Replies: 7
Views: 507

Re: Lens

I don't think that AF on the C 100 L works with most teleconverters. That's something worth checking if AF is important to you.
by JKT
Sun Jan 01, 2012 6:39 pm
Forum: Identification
Topic: Winter Blues :)
Replies: 34
Views: 1160

Re: Winter Blues :)

Finland would be a dream trip!... could seriously consider... but it's a huge country... where would you suggest a base?? :D Let's see... - P. centaurae (N & NW - early July) - C. silvicola (S - early) - C. tyche (NW - early July) - C. hecla (N & NW - early July) - L. helle (C - early June)...
by JKT
Sun Jan 01, 2012 2:48 pm
Forum: Identification
Topic: Winter Blues :)
Replies: 34
Views: 1160

Re: Winter Blues :)

I had considered melanops for the second, but only on account of the arid habitat suggested by the background. The border is so much narrower than that of any of the melanops I saw in Málaga this spring I ruled it out. Interestingly, though most of my melanops have clear white fringes one does have...
by JKT
Sun Jan 01, 2012 2:04 pm
Forum: Identification
Topic: Winter Blues :)
Replies: 34
Views: 1160

Re: Winter Blues :)

Fun game indeed! 20 has to be dorylas as one of mine was correct and there are now two nominations for the other ... and it has not been confirmed. I'm also willing to believe 2 as melanops. Guy seems to have missed the list of remaining species earlier. There is also no reason why 4 couldn't be orb...
by JKT
Fri Dec 30, 2011 10:08 pm
Forum: Identification
Topic: Winter Blues :)
Replies: 34
Views: 1160

Re: Winter Blues :)

This is fun even though I have barely seen most of them. 01. baton (orion) 02. iolas? 03. alexis 04. pirithous??? 05. arion 06. alcetas??? 07. semiargus 08. damon? 09. optilete? 10. idas? 11. glandon 12. amandus 13. thersites? 14. bellargus 15. argus?? 16. escheri? 17. dorylas? 18. eros? 19. boeticu...
by JKT
Thu Dec 22, 2011 3:29 pm
Forum: Overseas
Topic: Estonia - RFI
Replies: 5
Views: 467

Re: Estonia - RFI

I suppose that's me. Unfortunately I've been in Estonia (outside Tallinn) only once. The area was quite promising for butterflies, but there wasn't that much of else. It was in the south-eastern corner in a small place called Piusa. I seem to recall hearing that Saaremaa might be a good place.
by JKT
Thu Dec 22, 2011 3:24 pm
Forum: Photography
Topic: Pixel Binning
Replies: 7
Views: 581

Re: Pixel Binning

I would think that 4x4 binning would compress 16 pixels to one. Your numbers would appear to describe 2x2 binning. Or is there something non-intuitive in the nomenclature? It is also important to remember that Bayer sensors have one red, one blue and two green pixels for each four pixels. So 2x2 bin...
by JKT
Wed Dec 07, 2011 6:34 pm
Forum: Links
Topic: butterflies in Poland
Replies: 10
Views: 3849

Re: butterflies in Poland

I think there are a few identification errors (you have a lot more napi than you think, and I believe your helle on Lycaenidae p.2 are tityrus ... :D ) but that's all part of the fun!y And I think your B. euphrosyne on Nymphalidae page 2 are all B. selene . The last two are a bit questionable, thou...
by JKT
Tue Nov 29, 2011 12:19 pm
Forum: General
Topic: Holiday to Tenerife part 1
Replies: 10
Views: 940

Re: Holiday to Tenerife part 1

Cyclophora is a pretty good guess. That would make it either C. maderensis or C. puppillaria. I'd still prefer Scopula irrorata as the black spots (ocelli?) don't have white center. The color should be warmer, but that applies to all three.
by JKT
Sun Oct 16, 2011 2:09 pm
Forum: Photography
Topic: Lens recommendations
Replies: 47
Views: 2046

Re: Lens recommendations

I don't know the actual figures but the maximum focal length of the Canon 100 - 400 is probably less than 300mm at its closest focus distance. That's easy to check if you have the lens at hand. Just set the lens at f=400 and minimum focus. Put a ruler horizontally where it is in focus. Measure the ...
by JKT
Sat Oct 15, 2011 7:18 pm
Forum: Photography
Topic: Lens recommendations
Replies: 47
Views: 2046

Re: Lens recommendations

It would do two things that the Sigma can't do without it. It can go to 2x magnification and it can take a comparable picture of a skittish insect from twice as far. If one doesn't need either, it can be - and should be - taken off. On the average the 1.4x would probably be a better overall solution...
by JKT
Sat Oct 15, 2011 1:37 pm
Forum: Photography
Topic: Lens recommendations
Replies: 47
Views: 2046

Re: Lens recommendations

I'd have to disagree here. A 12 mm. extension tube on a 150 focal length will allow focusing quite far - not infinity, but far enough for any butterfly. The AF would be lousy, but who uses that anyway? :wink: You would get a 300 f/5.6 macro lens, which would work to a bit over 2x magnification. How ...

Go to advanced search