jvr
Well-known
jvr said:
Just to report that I already got the hood. It definitely makes a difference. Contrast is higher, you can even see it on the histogram (wider) and on speed chosen by the camera for the same aperture (less flare, less light, lower speed, brighter whites!).
Thank you very much!
BTW, I notice a lot more flare on the Ultron 28 when used on the R-D1s. On my M3 it does not show so much. Could it be that it's an interaction between the almost flat rear element and the completely flat, shiny sensor? A film is less flat and much less shiny than a CCD.
With an almost flat rear element (and probably a less than perfect coating on a surface that should not receive much light in "normal" conditions), the Ultron 28 is more "vulnerable" to stray light reflected from the sensor (and then reflected again to the sensor by the rear element!) than other lenses...
Could this be part of the explanation for the varying results people get from the ultron?!?
pfogle
Well-known
I've never really noticed any problem with flare from the Ultron 28. Mind you, I don't use it very much, but it seems pretty good to me.
If the flare was from a reflection from the rear element, it would show up if there is a bright source in the picture. Why not shoot some night street scene using both bodies (film and dig) and post the results?
cheers
Phil
If the flare was from a reflection from the rear element, it would show up if there is a bright source in the picture. Why not shoot some night street scene using both bodies (film and dig) and post the results?
cheers
Phil
jvr
Well-known
pfogle said:
That's exactly what I'll do when I get some time.
BTW, problem usually shows (at least with my sample) when source lights are JUST out of the picture. And what I get is not "flare ghosts" (other lenses are much worse in this respect!). It's more of a veliling flare that takes away contrast (nothing that can't be recovered with Levels on Photoshop...). The hood improves it a lot. So much that I'm inclined to buy new hoods for both my Zeiss 21/2.8 Biogon and the 12/5.6 Ultra Wide Heliar. With the cropping factor, both lenses probably don't vignette with a more "agressive" hood.
BTW, it almost sounds like I don't like the Ultron. I certainly do and, like most other CV lenses, it's quality is almost with the best, by a price that almost seems ridiculous by comparison
.It's probaby just curiosity from my side, as it's rendering is different from all the other CVs I own (I already posted a series of pics to show what I mean).
