Taylor Sherman wrote:
I noticed with both the 21 SEM and 28 Elmarit-M on Saturday that I was getting this polarizer-like effect in the sky - without any filters. Interesting?
I think thats due color transmission of Leica lens, they somehow make blue deeper and maybe even bit darker. Its quite apparent on Leica S too. Maybe their lens work as sorta weak polarizer filter, by lowering certain parts of color spectrum..
Taylor, no such issue with the very similar 24mm Elmar. None. That suggests that it is not the 21 SE, or the 28 'Cron for that matter. OTOH, if you are using a 7, how come there is no colour shift?
Taylor Sherman wrote:
I noticed with both the 21 SEM and 28 Elmarit-M on Saturday that I was getting this polarizer-like effect in the sky - without any filters. Interesting?
i definitely get different blue skys with my leica m lenses, but that looks more like uneven exposure on one side of the frame (branches are also darker). i sometimes have trouble with that on my 7 with very high shutter speeds and no first curtain.
I used Adobe FlatField to get rid of the color shift. But, not vignetting, so that probably played a part.
Looking at my other pictures, it's not as pronounced. This one may have had to do especially with the angle of the sun and the normal vignette produced by the lens (this was at f/2.8).
Taylor Sherman wrote:
Oh interesting, sebboh - you're right, this one is at 1/4000. But, I have the electronic first-curtain shutter enabled. (or is that what you mean?)
that's what i meant. perhaps the electronic first-curtain can't sinc well enough at such short shutter speeds?
taran wrote:
@mawz, I had no idea the 50 1.8 rendered OOF areas so well. That lens looks quite nice for near focus too.
taran, note this is the relatively rare 'long-nose' 50/1.8 AI, not the very common 50/1.8 'pancake' design available as a Series E, AI-S, AF, AF-N and AF-D lens. The long-nose is IMHO optically superior to its successor (as is the 50/2 design that the long-nose 1.8 is derived from). My experience is the long-nose is sharper and has nicer bokeh than the pancake.
The NEX-7's electronic first curtain shutter does have some known consistency issues at high shutter speeds. I disable it for this reason if I'm expecting to be over 1/1000.
A quick test here at home confirms - at 1/4000 (and iso 16,000 since it's pretty dark), the bottom of the frame is quite a bit darker than the top. With the electronic first curtain disabled, it's the other way around, which matches reality. For the picture I posted on the last page, I had the camera oriented s.t. the bottom of the frame became the right side of the image.
Took this one in our garden at sunset with the CZ 45F2. The wife loves to collect skulls and old bikes and trikes for the garden. I decided to combine the two this afternoon. Color Efex for som PP Fun.
not one with any artistic value, but I got the 90/2.8 G Sonnar this evening and caught a quick glimpse/shot of comet Pan-STARRS, so I thought I'd share. Maybe someone with some longer glass (and prettier horizons) can grab a nicer shot in the next few nights?
