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Hello Peoples - Page 2

Going to irritate you all with silly questions......

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Posted: Wed Nov 8th, 2017 13:16

11^th Post

Joined:	Sun Apr 1st, 2012
Location:	Carthew, Cornwall, United Kingdom
Posts:	6995
Status:	Online

Adco wrote: Eric wrote:
Forgot to say, Adco....... whereabouts on the globe are you located?
Add something to your profile if you will, to at least let other know which country you are in....if necessary, they can then answer questions more relevant to your location.Oops! Sorry about that. I'm in Johannesburg, South Africa. I'll go edit my profile.
Thanks for updating your profile with the location.

I really does help to know where you are located as different responses apply to different areas of the globe!

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Posted: Thu Nov 9th, 2017 01:18

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Adco

Joined:	Fri Nov 3rd, 2017
Location:	Johannesburg, South Africa
Posts:	47
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Robert wrote:
That's great, welcome again!

Perhaps explains the bugs?I read that 2 ways:

1) Why do I take pics of bugs? I have always been fascinated by insects and we have an over abundance this side of the world. I got frustrated with my standard lenses and a friend loaned me a few lens extenders that I fitted to my 18-55mm. That showed me a totally new aspect to photography and I took some great shots using that method. After a while I more frustrated with the extenders for various reasons.

I then bought a Sigma 105mm Macro. I am really enjoying the new lens but I need to go on a specific Macro course to learn how to operate it properly. There are a lot of aspects that I don't fully grasp but I will get there.

2) If you want detailed identification of the bugs I'm afraid that is going to be a task of note. It is very difficult finding easy sites to look up what each critter is. I am on a FB site https://www.facebook.com/groups/Butterfliesandbugs/?fref=nf where there a lot of well read folk who keep on identifying members insects. Go have a look at the FB page. There are some fantastic insect pictures and most are from SA. All of the pictures I put up are from my garden. Most afternoons after work, I go strolling around the garden searching for insects. I find at least 10 different species every time of which 2-3 are new to me. So far I have found over 100 different species in an area of 1300m2 (can't find superscript function to make the 2 smaller so it read as square meters)

Posted: Thu Nov 9th, 2017 03:35

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Robert

Joined:	Sun Apr 1st, 2012
Location:	South Lakeland, UK
Posts:	4066
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Ah, you missed MY meaning... LOL

3) South Africa must be a haven of small wildlife, (bugs) given the wide diversity of fauna and flora also the climate.

I haven't investigated the South African bugs but I have looked closely at the flora in a specialised sense (commemoratively named species). The diversity of the two are related.

One of the first things you need to do is abandon AF, which was why I suggested a less automated camera may be better for this type of photography. YOU need full control of the focus. AF will likely focus on the closest point in the focus area. You need to focus on the part which is of greatest interest. For stationary bugs perhaps focus stacking may work.

The greater the magnification, the shorter the depth of focus, period.

If you focus on the closest part of the subject, you are throwing away half of your depth of focus.

You can increase your depth of focus by stopping down BUT only so far, each lens has a 'sweet spot'. The DoF may be greatest at f22 but the image quality of the lens will have fallen off at that aperture so you have gained DoF but lost IQ. Your call... Sharpening can only sharpen what's there, it can't work miracles and over sharpening creates halos around the contrast edges.

I struggle naming species, AND stars! I have apps on my iPhone which help me to identify mushrooms, wild flowers, trees, orchids and butterflies, birds etc. I have no doubt there will be one which covers bugs. The creator of the apps I use are Mullen & Pohland GbR who use Isoperla to develop the apps but I guess there will be many more.

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