Paul De Bra

Unless you can print really large you are only testing lens sharpness on short focus distances. The advantages of the brick wall is that you are shooting at a more realistic distance for day to ...

It may have been a coincidence, but ages ago (Canon dslr days) I bought a Tokina 12-24 which was very bad on the righthand side. I returned it for an exchange and the second one was just ...

I realize my post was an oversimplification of the situation. I had a Panasonic 14-42X (power-zoom pancake lens) as well as the 20mm f/1.7 and the zoom suffered less from purple fringing than the ...

The bottom left corner seems less sharp, especially at the wide end. But what I always do when testing a lens this way is to take one shot with the camera in "normal" orientation and then again ...

Olympus lenses filter out UV light to some extent, whereas Panasonic camera bodies do the same. So when using an Olympus lens on a Panasonic camera you get double filtering (which may affect deep ...

These cameras have a small internal (and inaccessible) battery that keeps the date/time going when the main battery is removed. That battery can easily last for 10 years when not being drained. ...

When you power cycle the camera the sensor (stack) does a dust-shake-off which may not be completely silent. But while shooting that is of course not the case. While shooting there is still the ...

People tend to think of holding the camera and then the 12-100 looks huge and makes the package "front heavy". But you have to indeed considering holding the camera+lens and if you can do that ...

First of all, I would pass on the Nikon glass. Native m43 lenses will work better on m43 than adapted lenses, especially in terms of being able to focus quickly and accurately. The general wisdom ...

Well, sure there is noise, especially on the darker arm, but for ISO 6400 this is quite reasonable. I try to stay below ISO 1600 myself, but with for instance Topaz Denoise AI it is surprising how ...

Your "original size" image is really small. Downsizing images drastically reduces noise and makes ISO 6400 images look clean... but of course there is no detail beyond the size of the picture that ...

When the dark portions in the 12 bit raw are already drowning in noise the extra 2 bits would contain no usable data at all, only noise. And with the available amount of light that requires ...

I also use noise reduction software (Topaz Denoise AI) but no noise reduction software can "recover" data that has not been recorded by the sensor. What the best noise reduction programs try to do ...

That's not actually true. As you zoom the front element moves. The lens extends towards the 7mm mark and shrinks towards the 14mm mark. The movement is such however that the front element still ...

You can compare specs. I was surprised to see in a side by side photo dat the 8-25 f/4 is not much smaller than the 7-14 f/2.8. For me that was enough to realize that it doesn't make much sense to ...

Some software is written badly enough to require this. But you wouldn't want to use it. Alas, there is also the trend to introduce completely new programming environments and then some companies' ...

Small flaw: you switch the role of student versus teacher. The belief should have read: that teachers should get paid once for every new student , when they start (or maybe when they finish) ...

Hardware wears out. Your shoes after one year of use are no longer in the same shape as they were on day one. Neither is your car. Software does not wear out. It is still in the same shape after ...

I do know that software is costly to develop. But I also know that development cost is the only cost. Unlike when making cameras where every camera costs money to produce, there is no such ...

At Topaz they sure know how to not make customers into "friends"... A shame really because their product is great!