Charles - very nice 75lux shot! And I agree with Edward.
Ron - Looks to be a fun time. I like how you manage to convey the "moment" at casual events like this. You must have a trained eye..
edwardkaraa wrote:
I have the utmost respect for Roger and his strict methodology but I have to be skeptical about some results.
For instance, if you look at the official Leica measured MTF of the 50 cron, with all due respect, they look like a roller coaster. There is no way it could produce such consistent high results at center, mid frame and edge. The Leica MTF are confirmed in every review I have read and by actual users. The mid frame dip is well documented.
Well, maybe its just me but the results look similar to my experience with both planar and cron.
Still I enjoyed both
The only thing on that chart that surprises me, was the Noctilux not sharpening up enough by f/2, which doesn't reflect my experience with it.
Does anyone have the Nissan i40 flash? I wonder it's compatibility with the M240. I'm fine with full manual (I do it with the SF24D), but it would be neat if it did TTL well. Funny thing is, I NEVER use flash with the M240, but it's always good to have one or two laying around.
rscheffler wrote:
IMO, a flaw in how Roger presented the data was that he took the highest value for a given point, whether it was sagittal or tangential, rather than just sagittal or tangential. This IMO skews the results, giving more favorable numerical results. He said he did this to keep things simple, but I would have preferred to have seen the values for each. What is also easy to overlook, and at least he does mention, is the 'astigmatism value', as he calls it, which is the difference between sagittal and tangential values. As you can see, the Otus has very low sagittal/tangential value variations, while the Leica lenses are higher. How much this affects overall perceived image quality, I'm not so sure, but from my experience with the 50 Lux and 21 Lux, when there is a large sagittal/tangential difference in certain zones, it seems to adversely affect the impression of image quality/sharpness (the Lux mid zone dip).
At least what the numbers reveal is that these lenses have a fair amount of resolution in reserve and will be very usable on future higher resolution sensors. I was very curious to know how the 50AA stacks up against the Otus, and at least based on simple MTF values for 'sharpness', it holds its own. Of course what these numbers don't really tell us very easily is how each lens renders, degree of CA, tendency for flare, etc... I think the 50AA has been criticized for being only partially APO while the Otus is 'fully' APO corrected...? How much that matters is another issue entirely.
I was also surprised by his ZM50/2 focal length value as I know from the 50mm tests I've done that it's noticeably wider than most other 50s. It probably isn't 45mm, but maybe most other RF 50s are slightly longer than 50mm. My Lux ASPH is apparently 51.4mm......Show more →
Let me be among those to totally agree about the data collection and presentation. I tested these and spent too much time looking at different ways to present things and finally just put it up as a trial balloon figuring a lot of feedback would be the best way to learn what to change for next time. The whole better of sagittal and tangential with astigmatism idea was just bad.
rscheffler wrote:
Curious too about the 28 Lux, but guess it will be in the $6-7k price range. Apparently Sean Reid has had a prototype copy and may have posted something on his site about it (if anyone has a subscription and can confirm)? I can appreciate what f/1.4 will bring, but have to say I find the Cron to be very versatile, as it's usually fast enough and it has a nice, predictable character to it in respect to placing subjects off center in the frame and field curvature... Will be interesting to see the 28 Lux MTF values and whether there is the typical mid zone dip present... ...Show more →
Sean has a review of the new 28 Summilux and he is very positive about it and thinks it outperforms the Summicron in most aspects.
Roger - the effort was much appreciated and very informative! Looking forward to more.
joakim wrote:
Maybe rename it to the Leica M, X and T image thread
What about S? We've had a couple occasional contributors...
Charles - I was remiss at not commenting on your excellent portrait with the 75 Lux. A very compelling example of what can be done with that lens. Adam - you should try one. The brief time I had with one, I found it quite easy to use, including focus.
Charle - great set. The 21 really pops and I'm not surprised to see the 28 Cron flare. Love the light/mood of the last one too.
kape - really nice, especially the first one.
joakim - thanks for the info!
Thanks guys for your comments and likes for my previous set. Here are some more... It was a 'wines of the world' party. Everyone brought one (or more) bottles of wine...
adamdewilde wrote:
Does anyone have the Nissan i40 flash? I wonder it's compatibility with the M240. I'm fine with full manual (I do it with the SF24D), but it would be neat if it did TTL well. Funny thing is, I NEVER use flash with the M240, but it's always good to have one or two laying around.
Now you've piqued my interest.
I really like their full manual control dials, as well as the ability to use as optical slave.
At a guess, I'd say at least a Canon or Nikon mount should work on the M240 in full manual mode; TTL is definitely out of the question here. Though it would be better if an owner could confirm manual operation.
Currently I use Metz 20 C-2, 36 C-2, and sometimes a Canon 600EX-RT but for full manual operation, this Nissin seems to be the most convenient to operate.
Very nice photos Charlie, Ron, Kape, Tobin! Great work!
I have a question regarding MTF if anyone cares to shed some light on the difference between sagittal and tangential measurements. I had the impression that sagittal graphs were directly related to the lens sharpness and resolving power while the tangential graphs were mostly relevant in determining lens aberrations such as CA or the lens rendering of OOF detail especially the way the the tangential graphs diverge from the sagittal ones. Am I correct and what is the true story here?
I really like their full manual control dials, as well as the ability to use as optical slave.
At a guess, I'd say at least a Canon or Nikon mount should work on the M240 in full manual mode; TTL is definitely out of the question here. Though it would be better if an owner could confirm manual operation.
Currently I use Metz 20 C-2, 36 C-2, and sometimes a Canon 600EX-RT but for full manual operation, this Nissin seems to be the most convenient to operate.
Yes, but they don't only serve Canon and Nikon, isn't there a M4/3s one, wouldn't that be panasonic, thus Leica? As theres a Metz flash that works with panasonic/leica. Anyway, I'm sure full manual mode would work.
uhoh7 - Nice mood to those landscapes, looks like it was on the verge of a downpour all day. There is an orb in the 28cron shot. I forget, are you using the M9 or are you using the M240?
kape06111 - Love how in each shot theres another random guy in the background doing something typical to the scene you're shooting. Also don't you love the 28 Elmarit-asph, it's so small, I'm tempted to buy it again!
