Search found 65 matches

by Chris Pickford
Fri Apr 01, 2011 7:21 am
Forum: General
Topic: Streetlighting and Species Decline
Replies: 7
Views: 350

Streetlighting and Species Decline

Some councils seem to be switching over to super-bright, white, LED streetlights. This would seem to pose a threat to many moths which will be attracted to them and either end up in a pile underneath, or get picked off by bats (the low-pressure sodium lamps currently in use in many areas are barely ...
by Chris Pickford
Mon Jan 31, 2011 9:34 am
Forum: Photography
Topic: butterfly spooked by autofocus motor
Replies: 5
Views: 476

Re: butterfly spooked by autofocus motor

Common experience! I've had it particularly with woodland butterflies like Speckled Woods with my Nikon D300, never with blues or whites. I've also noticed it with some other insects on occasions - for thius reason I generally switch to manual focus closer than 1:4.

Chris
by Chris Pickford
Tue Jul 13, 2010 12:13 pm
Forum: General
Topic: Deaths' Head Hawk moth
Replies: 11
Views: 687

Re: Deaths' Head Hawk moth

Another foodplant is said to be buddhleia (if that's how you spell it!). A colleague of mine has bread them a couple of times recently, and brought the larvae and adult moths in for me to photograph. Impressive!!

Chris
by Chris Pickford
Thu Jul 01, 2010 1:16 pm
Forum: Photography
Topic: Tamron 90mm with 1.4X converter.
Replies: 8
Views: 450

Re: Tamron 90mm with 1.4X converter.

I think the issue with the apparent aperture not indicating a full stop light loss may be a consequence of the fact that the apparent aperture of the lens changes as you focus (fact of life with macro lenses usually). In other words, at infinity focus, the aperture will indicate f2.8, but as you foc...
by Chris Pickford
Wed Jun 16, 2010 10:18 am
Forum: Sightings
Topic: June 2010 Sightings
Replies: 182
Views: 7869

Re: June 2010 Sightings

I spotted 4 or 5 Small Blues this weekend on a patch of kidney vetch a mile or so from my house (S. Oxon). All were rather worn females busy egg laying.

Not an enormous number, but more than I've seen there for a year or two.

Chris
by Chris Pickford
Thu May 06, 2010 11:03 am
Forum: Photography
Topic: M42 thread macro lenses
Replies: 3
Views: 272

Re: M42 thread macro lenses

I have an old Tamron SP90 Adaptall manual macro lens that I bought (for Pentax bayonet) but I have used it with an M42 adapter as well onm an M42 body. It is an excellent macro lens, prized by many (see last week's Amateur Photographer for example, which rates it highly as a second hand lens). It is...
by Chris Pickford
Wed Apr 21, 2010 1:36 pm
Forum: General
Topic: Finding green hairstreaks
Replies: 23
Views: 1001

Re: Finding green hairstreaks

They are fairly common most years around here (S.Oxon, Chalk Downland) in one or two specific spots. The best way I've found to see them is to go to prominent hawthorn bushes or small trees in sunny positions and wait. Groups of 3-4 GHs seem to move around over quite a large area, but will come back...
by Chris Pickford
Thu Apr 01, 2010 2:08 pm
Forum: General
Topic: Ancient Egyptians and butterflies
Replies: 16
Views: 439

Re: Ancient Egyptians and butterflies

I believe that many cultures also associate butterflies with the spirits of the dead - same word in some languages. Greek mythology as well, I believe.

Chris
by Chris Pickford
Tue Mar 23, 2010 12:20 pm
Forum: General
Topic: Painted Ladies
Replies: 2
Views: 194

Re: Painted Ladies

The first butterflies I saw this year (Feb, S. Oxon) were fast moving vanessids that looked very much like extremely worn Painted Ladies. They were flying "purposefully" very much like the waves of PLs that passed over last year. Bearing in mind the extremely cold winter, and the general b...
by Chris Pickford
Thu Feb 25, 2010 12:53 pm
Forum: Sightings
Topic: First sign of Spring??
Replies: 1
Views: 166

First sign of Spring??

After all this white stuff, it was refreshing last night to open the door to let the cat out and have a moth fly in! Nothing very exciting (appeared to be a November Moth, obviously elderly and confused) but at least it was a lep!
Chris
by Chris Pickford
Sun Feb 07, 2010 10:15 am
Forum: General
Topic: Raptor
Replies: 8
Views: 481

Re: Raptor

Many thanks for the opinions, which I agree with. The colleague who saw the bird (and another local wildlife-er who came forward independently having seen it a couple of miles away an hour later) both thought it was a scruffy osprey (I didn't use the word, because I didn't want to lead anyone down t...
by Chris Pickford
Thu Feb 04, 2010 8:17 am
Forum: General
Topic: Raptor
Replies: 8
Views: 481

Re: Raptor

The girl who saw it is married to a very keen birder and goes regularly on birding holidays eg to Scandinavia. She is also a very experienced scientist and very accurate in her observations. She dismissed my suggestion of a hen harrier (but I did see two here on Saturday) when I saw the pic; I also ...
by Chris Pickford
Wed Feb 03, 2010 10:25 am
Forum: General
Topic: Raptor
Replies: 8
Views: 481

Raptor

A bit off-topic this, but I know there are some butterfly-loving twitchers out there..... See this morning by a colleague on her way to work (near Wantage, S. Oxon) and photographed with a phone. She got a good look close up for several minutes, as it sat in a hedge. Is this what I think it is?? mys...
by Chris Pickford
Wed Dec 02, 2009 1:31 pm
Forum: Photography
Topic: Ring Flash
Replies: 4
Views: 429

Re: Ring Flash

I don't know if anyone is interested but there are several "ring lights" on sale now which work quite well with a DSLR. One sold by Hama (via Amazon/Germany) has a ring of ultrabright LEDs on a flexible arm. This can be positioned in front of the lens like a normal ringflash or angled down...
by Chris Pickford
Thu Nov 05, 2009 12:33 pm
Forum: Photography
Topic: Ring Flash
Replies: 4
Views: 429

Re: Ring Flash

In general terms, a ringflash is very useful for certain things, but will inevitably offend the purist who wants a natural-looking pic of a butterfly. I use them on occasion at work for technical subjects, but the problem with a butterfly is that you get the "miner's headlamp" effect, with...
by Chris Pickford
Wed Oct 07, 2009 11:06 am
Forum: Overseas
Topic: Tippling butterflies
Replies: 10
Views: 335

Re: Tippling butterflies

Talking of graylings, one for the experts........ Seen flying round a wood at very high speed (July) in the Besancon area. After 10 mins or so of flying display, it flew at a tree stump at high speed and then disappeared, but was in fact disguised against the wood bark. Is it a Woodland Grayling, or...
by Chris Pickford
Thu Sep 17, 2009 12:09 pm
Forum: Sightings
Topic: semi ichnusoides
Replies: 2
Views: 211

semi ichnusoides

I had a nice pic of a Small Tort aber. semi ichnusoides sent to me by an old friend who lives in S. Oxfordshire - has anyone else seen these around? As Small Torts eggs and pupae are available from suppliers for schools, I did wonder where these were captive bred on a hot window ledge in a school so...
by Chris Pickford
Tue Sep 15, 2009 11:59 am
Forum: Photography
Topic: Shooting hawk moths, any advice?
Replies: 13
Views: 727

Re: Shooting hawk moths, any advice?

I've had the most luck wrt hawkmoths (HBH or BH) using manual focus and finding a sprig of eg lavender where they return, time and time again. eg:- Having said that, I have had more than 30 hawk moths in my trap this year, and they are a lot easier to photograph when they are placidly sitting on a l...
by Chris Pickford
Tue Sep 15, 2009 8:22 am
Forum: Photography
Topic: Photoshopping Advice Please
Replies: 11
Views: 762

Re: Photoshopping Advice Please

Thanks for the advice, which has been most useful. I forgot to say originally that the files are all RAW, that I shoot in full sun/overcast, (but preferred conditions are hazy sun to reduce shadows) or flash - the ginger problem appears under all conditions. Oddly, if I use a colour digital test cha...
by Chris Pickford
Thu Sep 10, 2009 12:12 pm
Forum: Photography
Topic: Photoshopping Advice Please
Replies: 11
Views: 762

Photoshopping Advice Please

With certain orange-brown species, I have some difficulty with getting a reasonably realistic colour reproduction whatever I do In Photoshop (Elements 5). A good example is a Comma, which always looks too ginger 'ish, or Small Copper where for example several I saw this lunchtime, despite being quit...

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