Showing posts with label EVF. Show all posts
Showing posts with label EVF. Show all posts

Sunday, 20 February 2011

EVF - useful tool or work of the devil?

Silver Olympus E-P2 14-42 Kit Zoom


I read a particularly luddite article by a photographic commentator in a UK magazine a couple of weeks ago, saying how unspeakable EVF's (Electronic View Finders) were. The author was someone who thinks any camera made after 1950 is the work of the devil and digital is a passing fad, but this was a particularly crass example of the "Everything was better in my day" philosophy.


I find EVF's VERY useful. 


In the link I posted yesterday Michael Reichmann talks about the EVF on the Panasonic GH2.
He says:-


"Potentially the most controversial aspect of the GH2 is its electronic viewfinder. The way that MFT cameras with viewfinders achieve their small size is by substituting the usual mirror box and prism assembly for an electronic viewfinder – essentially a small video screen similar to what one finds on a video camera.
Digicam EVFs tend not to be of very high resolution or brightness, but the one on the GH2 (and the GH1 originally) is very good indeed. In fact, I would say that it is an many instances preferable to the dismal (meant literally) and small optical viewfinders found on the smaller and usually inexpensive DSLRs.
The EVF on the Sony A55 is also very good (though I haven't had a chance to do a side-by-side comparison), and similarly I would prefer these any day to a small and dim optical reflex system, especially those on cheaper systems that use pentamirrors instead of true prisms.
No – these EVFs are not as bright and clear as a good bright reflex system, especially one on a full-frame body. But, the trade-off in size and weight is considerable. Also, the ability to have display overlays, such as a live histogram, goes a long way to making this new alternative viewing system attractive.
Frankly, the writing is on the wall. It won't be more than a few years until the vast majority of new camera model with viewfinders dispense with prisms and mirrors and replace them with EVFs.
Get used to it. It's not that we as photographers are necessarily asking for this (though EVF display technology is getting better all the time). It's just the pressure of industry economics. Price competition is fierce. Moving mirror assemblies and glass prisms are expensive to manufacture and assemble. High quality EVFs are not exactly inexpensive at the moment, but as with all high volume silicon based products, prices will inevitably fall. When that happens mirrors and prisms will be relegated to only the high end, where users are willing to pay for special capabilities.
About 90% of the time I am not displeased using the GH2's EVF. It's even possible to forget that there's anything different going on. But in low light things get a bit weird. With a fast lens (like the remarkable Nokton f/0.95) the view actually becomes brighter than reality and the final result not what one expects."


lumix GF1 voigtlander 50mm f1.1 nokton


While some EVF's are far from perfect, and anyone who has tried to focus a manual lens using the Panasonic one for the GF1 and GF2 will know this well, they do have many advantages over the murky tunnel vision of many APS-C DSLR's.

When done well, such as in the Panasonic G series cameras they are a great help. They are still far from perfect, and while I appreciate their brightness in low light, the cranking up of the video gain often makes the image somewhat difficult to decipher. They don't like fast movement much either. However the alternatives create their own problems.

Leica X1

If you've ever used a bolt-on viewfinder like those on rangefinder cameras and cameras like the X1, you'll know some of the problems. These are supposed to help with the framing. However because lenses change their field of view when you focus them, they are only accurate at one setting. Leica viewfinders, and indeed the frame lines in their cameras are apparently set for a distance of either 2 or 3 feet. What this means in reality is if you are taking a picture when you are focusing further than this, you will get more in the picture than the viewfinder indicates. I've learned to adjust for this, but mark this down as yet another little "difficulty" Leica users have to put up with.

Voigtlander 15-35 Zoom Finder Leica M9 Zeiss 21mm f/2.8 Biogon

The Voigtlander 15-35mm Zoom finder is a bit more helpful, as I can adjust it to compensate for the framing discrepancy. If I use a 20mm lens for example then I set the finder at 18mm and that gives me a much more accurate idea of how the picture is going to turn out.

Panasonic DMC-L10 Leica D 14-150 f/3.5-5.6 Vario-Elmar Zoom Lens

I mentioned earlier about some of the problems of APS-C viewfinders. My Panasonic L10 is particularly bad. When raised to the eye the viewfinder image is both very distant and dark. In low light its virtually useless.

Pentax K-5 35mm f2.4

Newer cameras like my Pentax K-5 are better but still not perfect.

EVF's will undoubtedly improve and indeed we see them getting better all the time. Even with their current limitations, I still prefer them over optical viewfinders. I'm also finding that I'm getting quite frustrated that my DSLR's don't have continuous live view. I've got so used to using cameras like the GH1 and GH2 where the live view runs all the time and when I raise my eye to the viewfinder it switches the image to that. Its a great system and why every camera doesn't do it, seems crazy to me.




It's going to be interesting to see how the hybrid viewfinder on the Fuji X100 works. By offering both electronic and optical options it should in theory be very versatile. Fuji certainly seem to have shown other manufacturers that its possible to get a decent viewfinder integrated into a small body. Whether it does the job well, I'll report back on when I get my hands on one.





Sunday, 24 January 2010

More on the Olympus E-P2

olympus e-p2 voigtlander 50mm f1.1 nokton

My new best friend!
There is one basic difference between the E-P1 and E-P2 and that is the add-on Electronic View Finder - the VF-2. And boy is that difference significant!
This VF-2 is sharp and bright & in daylight it is difficult to realise that this is not an optical viewfinder.

olympus e-p2 panasonic lumix 20mm f1.7 pancake lens
For me its turned an ordinary camera (the E-P1) into a special one. Within an hour of getting the E-P2 out of its box, my E-P1 was on ebay since I knew I'd never use it again. It now has a new home. The E-P2 has one enormous advantage for me over its predecessor and indeed over all the other m4/3 cameras. Focusing manually now becomes much quicker and easier. Its not difficult to be better than the GF1 EVF, but it is in fact an improvement over the G1/GH1, which both have excellent viewfinders. The point of focus is now much easier to see and there's a real "snap" to it. This is the best viewfinder I've ever used for focusing a lens and I really can't think that there's ever been anything better.

For me this is a real bonus. I prefer using the smaller m4/3 cameras, but the E-P1 made me focus using the screen, which was very slow and a real bind. The GF1 was better, but the "tunnel" view made manual focus quite difficult. The VF-2 changes all that. MF has become a pleasure. I was debating whether to sell my Voigtlander 50mm f1.1, mainly because of the weight, but will now be keeping it as it works really well on the E-P2.

The addition of the VF-2, plus the leather case I have bought, combine to add a little weight to the camera. For me this improves the handling, as I don't like really light cameras. With the Voigtlander fitted, it becomes about 800g. Not light by any means, but I really like the feel of this combination.

Ideal camera/lens combinations are always personal and this combination would not suit everyone, but its almost perfect for me. I went out yesterday with the Voigtlander and the lumix 20mm f1.7. I really liked the combination, and the two fast lenses produced very sharp
images.

I can't quite get over how much I like using this camera. I've been looking for a digital replacement for my previous favourite - the film Pentax MZ series + limited lenses. I think I've found it. Its very difficult to put the E-P2 down at the moment! I even like the raised viewfinder.

olympus e-p2 panasonic lumix 20mm f1.7 pancake lens

It is also very sexy! As you will be aware, I'm not a great fan a black cameras, but this looks gorgeous. The metal section of the body is very dark grey and looks much better in reality than it does in pictures. I like the design better than the Panasonics and I'm not constantly changing settings by mistake.

In terms of performance its almost identical to E-P1. Theres a few minor tweaks, but nothing much. Since all the m4/3 cameras use the same sensor, I find that they all pretty consistent. Olympus have a slightly different way of treating the files, but to me its not significant. The 20mm f1.7 did have a little CA, because of the lack of in-camera correction on the Olympus, but nothing that isn't easily fixable. I probably prefer Panasonic files, in terms of colour, but the difference is small.

I'm very pleased with the E-P2, its going to be my manual focus m4/3 camera.

Finally, the thought that Olympus really do have to come up with some decent lenses for this camera. The 14-42 zoom is OK but nothing special, and the 17mm f2.8 is somewhat disappointing. Panasonic have 3 great lenses, 7-14mm, 20mm & 45mm. Olympus have come up with a gem of a camera, but you need other companies lenses to get the best out of it.

olympus e-p2 voigtlander 50mm f1.1