Paul...since you are very informed on photography, i would like to ask a question of you...if you knwo great..if not , no big deal.....i would like to take a photo of something fairly close up but have the entire background blurred...is this done w the camera ( if so how?), or is it down w some photo program on the computer afterwards? if so, how?
thanks if you know, thanks if you dont
Al,
Your question is a simple one. Let's use the butterfly picture as an expample. Set your F setting to a low number, say about 3-4. Focus on the subject in question (like a butterfly or flower). Then take your shot. You'll find the background blurred. Conversly, if you want to take a long distance picture of a far off mountain, you would use a higher F number, say 7 or higher. By using a higher F setting, subjects closer and further off will both be in focus. In general that's the tactic.
Thank goodness for digital cameras. It's not uncommon for me to take 50 or 60 pictures in one day. I'll often take 3-5 pics of the same subject, at different apperature settings. I never use auto camera settings. I encourage you to explore your camera at varying settings.
First set your ISO based on your lighting conditions.
Next, set your F setting.... is the subject close (use a low F) if the subject is far off, use a high F).
Third, set your apperature.... after setting your A, do a test shot. If it is too dark, increase your A setting. If your shot is too light (over exposed), reduce the A setting. I usually bracket the subject with several shots in an attempt to get the best lighting and subject detail.
I also use a descent photo editing program. I use Adobe Lightroom 3. There I can modify lighting, contrast, ect.
Like making good wine, taking descent pics comes with practice, and from an understanding of your tools and subject.
I hope this helps a bit.