Dem Bell

Was the person in the centre OK? If you have 5 people and step 10 feet away, you will still have elongated faces for the two people at either side. Tip: place people's faces close to the centre of ...

This is what I tried doing a few years back and failed miserably for two reasons. First, here in the UK, the sky is not clear for most of the time, so you just can't get enough Moon shots. Second, ...

The Moon is a long way away. And it is big enough for the auto focus to latch on. When you do astro photography though, there is usually no moon in sight. So you have two options: either go by the ...

I wondered how much technology improved between 20D (August 2004) and 700D (March 2013). Hmmm... Believe it or not, the image quality did not change at all: https://www.dxomark.com/Cameras/Compare/ ...

The way you set up the experiment, (if by "the same light" you mean "the same total light") the exposure of the FF sensor is less than a half of that of the crop sensor. So after cropping the FF ...

Have you seen the formula for calculating DoF? It has 4 independent variables. In the regime where focusing distance is much shorter than hyperfocal, there are 3 independent variables: ...

Anyone who tried both would disagree with this statement. There is about a factor of two difference in DOF between the two lenses. Example. We are taking a full body portrait and frame our subject ...

Quite often a phone pic will do. This is not the point though. The point is that you don't need an f/1.8 FF lens to match the images produced by an f/1.8 m43 system. An f/3.6 FF lens will do the ...

You are right. The problem is that these two images will have different DOF and will not be equivalent. To make DOF the same, we can decrease aperture by two stops on the FF and also increase ISO ...

You really got this back to front. Focal length, aperture diameter, f-stop are all physical properties of the lens, like a filter thread diameter. They don't suddenly change whatever sensor you ...

Of course "I realize that". I have shot 4 different formats and know from experience what equivalent ISO means. You don't need to assume by default that people don't know or do not understand ...

Actually, yes. When you use a light meter, it does not ask you what focal length and what sensor size you are using. For a given ISO it gives an f-number and shutter speed combination that will give a

But wait, if we look at more digits, it is actually 1.2345... There must be a conspiracy here. Did you know that movie "Pi" is 1h 23m 45 sec long?

Does anyone know where I could find some Leica stickers to pimp my Fuji X10?

If you want one filter that fits all your lenses, you buy a filter that fits the largest lens diameter (e.g. 77 mm) and a set of step up adapters (e.g. 72-to-77, 62-to-77). It might vignette on ...

1 1/3 = 4/3 1 times 1/3 = 1/3 is irrelevant here Has anyone mentioned t-stops yet? The fact that Nikon APS-C sensors are bigger than Canon? How to calculate log_2(x) on a calculator that has only ...

Thanks for checking that. I should adopt a different rule for deleting all but one almost identical images. I often find the first image in the series the best. Might stick to that.

Select 4 images in the navigator window and click compare button. It can also do 2 or 3 images.

This is an excellent example of how you can improve an image in postprocessing (would probably take about a minute or two). I like it more than the original because: (1) it has natural colours - the ...

Two things that I think will make an immediate difference: (1) Framing . Frame more loosely and then you can decide how to crop the image best later. Pay attention to the background as well as the ...