Recent content by Garry Edwards

I agree with you, I never hesitate to stop down a bit further than is safe in terms of diffraction limitation if needed in order to get adequate dof. As I pointed out in the article, it's a tradeoff. We need to understand the physics, but it's a bad idea to become obsessed with them.

Yes, looks like it, but the way I went around that image creation should have prevented it. I did them in that order - Create a side by side image of a yellow tape measure etc, measure extended from zero to 150cm. Left image 5"x4", F210, f/5/6. centre image Nikon D3, F80, f/5.6 etc, followed by...

Garry Edwards submitted a new resource: What Is Depth of Field? - dof is simply the range of distances in a photograph that appear to be acceptably sharp Read more about this resource...

Yes, on a technical level (and ignoring any strange by-products caused by extreme wide-angle lenses), it's all about lens to subject distance and has nothing to do with the focal length of the lens. Try it for yourself. Take a photo of anything that has both a foreground subject and a more...

I agree that most are poor now, with odd exceptions. But this is nothing new, Over 20 years ago I had a small package that Royal Mail were supposed to deliver to my studio. I found a "Sorry you were out" card through the door, checked the CCTV and saw the van stop outside, the driver got out...

You may be right. All that I know is that I personally like the texture of the paper to show in my own very poor watercolours, basically I've just told the OP how to achieve this if he wants to.

As @Gav. has said, flashguns may not illuminate them evenly, but then this isn't a critical application, so if you follow his advice re zoom etc you'll be fine. Neweer is a brand, not a make, they do make a few items but most are just re-brands, so quality can vary a lot and without actually...

Short answer: NO. Slightly longer answer: Still no, look at the published specs, decide whether you believe their claim "CRI: 92+". Even if it's true, what it means is "Color rendition index is at least 92. What should it be? 100. That's what we get with both daylight and flash. What does it...

In that case, they're large enough. In this context, "large" means at least as large as the subject. Yes, please post your results, WITH NO POST PROCESSING CARRIED OUT. That's how we learn.

I'll never forget having the same thing done, 66 years ago. Nowhere near enough anaesthetic, incredibly painful. Bandaged it up, had to walk or rather hop 2 miles home on my own at the age of just 15. . . The improvements to patient care since then have been tremendous:)

Very unhelpful advice, flash is the best option by far. The answer you got may have meant to say "Avoid direct flash, i.e. a flash fitted to a camera". Continuous lighting will also do, but is very unlikely to reproduce all colours accurately, especially the warmer ones, reds, yellows and...

Sorry, don't know. @sirch ?

The site rules are here https://www.talkphotography.co.uk/help/rules/ There's guidance there about duplicate postings, posting in the appropriate forum etc. The overiding rule is that we can only post photos that belong to us, or that we have prior written permission from the copyright owner to...

Many thanks for raising these important points:) It's (nearly) all about the f/number, the higher it is, the greater the diffraction limitation. f/number, as you rightly say, is just a mathematical formula that's useful for exposure, it doesn't relate to the physical size of the actual or...

Long story short, due to health issues I'm struggling to take photos right now, so I'm using my time to create articles that I think may be useful. There's one in the pipeline, on depth of field, which a lot of people seem to struggle with. But, before I write it, I would appreciate all...