1200mm: Digital Teleconverter

Started 8 months ago | Discussions thread
OP Henry Richardson Forum Pro • Posts: 18,875
Is The Digital Tele-Converter Feature In Your OMD Camera Worth Your While?

JimH123 wrote:

Henry Richardson wrote:

Sometimes just for grins I use the Olympus 75-300mm II with the 2x digital teleconverter function for fun jpegs. What it does is take the central 25% of the image (5mp in the case of the 20mp PEN-F) and then interpolates it up to full size. The EVF shows the image you will get. At 300mm it would be equivalent to a 600mm field of view. Of course, the quality is not the same as a real 600mm, but I have found that if I then downsize the 20mp photo to 10-12mp on my computer it usually looks pretty darn good. For some images even the full 20mp looks good. Just a few years ago 10-12mp was living large. Big enough for most uses still. Note, that if you shoot raw instead of jpeg you can still see the pseudo 600mm view in the EVF, but then you will have to crop the raw on your computer to the central 25% and then upsize. Remember, 600mm on m4/3 is like 1200mm on FF. Pretty awesome.

I am using an Olympus EM1 with an Onlympus 75-300, along with Topaz's Gigapixel AI followed by Sharpen AI - Stabilize mode. Digital 2x in camera is convenient. But resizing the image in post processing can outdo what the camera can do.

I am sure Gigapixel AI can do a good job. Costs about $110 including tax. DTC already included in camera. You may recall what I wrote above.

I recall that 3-4 years ago there was a thread here where this was discussed. Some people did some testing and thought that Olympus does a slightly better job in camera, but I don't know. Depends on what uprez software is used no doubt and that can vary by image. The point is to have fun though and the DTC for super long such as 1200mm-efl is a blast. A really big advantage to using the digital teleconverter though is that the EVF shows what you will get at the proper size rather than trying to guess the central 1/4 of the image. You can see details better, see that things are in focus properly, etc.

A few years ago this guy wrote an article about it:

Is The Digital Tele-Converter Feature In Your OMD Camera Worth Your While?


My thoughts are that for people who care about getting the best then forget Gigapixel AI and DTC and get a longer focal length lens instead. For fun though DTC is great especially for super long telephoto shots!   And the results can be sometimes surprisingly good, especially if you downsize the 20mp photo to 10-12mp.

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Henry Richardson

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