Summarits vs. Summicrons

richard_l said:
You sound resentful. Are you? Every high school graduate should have been introduced to logarithms and scientific calculators in algebra. I mentioned a useful formula which can be used in place of a table for determining stop differences. It's probably in most photography handbooks. Sorry, I don't think it can be dumbed down any further.

Richard
Click to expand...

And you sound condescending.

You see, any mathematical talk in a photo forum doesn't really impress me.

Let's see... how do you define photo talent and photo skills with a mathematical formula?
 
NB23 said:
And you sound condescending.

You see, any mathematical talk in a photo forum doesn't really impress me.

Let's see... how do you define photo talent and photo skills with a mathematical formula?
Click to expand...
Photography is based on optics and chemistry, both of which rely heavily on mathematics. There are far more complicated formulae involved in the making of lenses and film than are shown here. Even the simplest form of photography, pinholes, involve geometry and trigonometry to calculate the size of the pinhole and the effective aperture. Whats wrong with trying to understand this and the limitations set by physics?

Unfortunately, many students regard logarithms as more difficult than they really are. During a university lecture on logarithms, my math teacher once cried (with his heavy German accent): "Nonono, that is like taking the square root of a Christmas tree or the Easter Bunny, never do that again!"
 
EmilGil said:
... During a university lecture on logarithms, my math teacher once cried (with his heavy German accent): "Nonono, that is like taking the square root of a Christmas tree or the Easter Bunny, never do that again!"
Click to expand...
I thought that Easter was the square root of Christmas!
 
It will be interesting to see how the 90 2.5 compares to the latest model Elmarit M 2.8 as this model is not asph (funky glass I cannot comment on) yet the summarit seems to be a bit cheaper (about same weight and size). I wonder where they have made teh saving on the summarit 90 2.5 over this elmarit-M??? Manufacturing technique, machine vs hand crafted components??

Leica coming out with new lenses can only be a good thing as it demonstrates an intention to compete with the likes of Zeiss in that price bracket. If they dont get it right this time they might next time in terms of performance price ratio.

I know the 'how much different is 2.5 to 2.8 or 2.0 has had a lot of debate but the differences betweent he various differences mentioned are small and I doubt that important. Bit slower than 2.0 and a hair faster than 2.8 is fine for me!
 
NB23 said:
And you sound condescending.

You see, any mathematical talk in a photo forum doesn't really impress me.

Let's see... how do you define photo talent and photo skills with a mathematical formula?
Click to expand...
This is an equipment thread, and I was answering a technical question. I'm certainly glad you were not impressed by the elementary math formula.

As much as I love mathematics and teaching those who are serious about the subject, one of the happiest days of my life was when I retired and escaped having to deal with those students who have a bad attitude.

Richard
 
Last edited:
richard_l said:
Maybe it's the dog days of summer (Sirius in conjunction with the sun). (Nothing against dogs. Lots of other animals, including many featherless bipeds, also like to fight.)

Rchard
Click to expand...

Richard,

Unbelievable! First you start out with a formula and now a riddle....with a bit of astrology and zoology thrown in. ;)

What I want to know is who would win: Magus armed with a small, but thick thesaurus or NBV23 with a somewhat floppier but larger maths book? :D

Photos are available for the new summarits on www.popflash.com under Lenses > Leica. I think these are the standard shots that might have appeared elsewhere. Any mention of them being released in silver chrome? Maybe they will keep the price down with only black anodised?


Rgds
 
NB23 said:
What bothers me is the "occasionally". Richard is really trying to introduce statistics at this point... First LOG, now Stats! :D
Click to expand...

The probability of NB23 being provoked at this point is 95% (plus or minus 5% 19 times out of 20).

Oh, yeah. Summarits vs. Summicrons. That's what we were discussing. The only way they can improve upon the 50 Summicron is to reign in somehow it's tendency to flare when a strong light source is just outside the FOV. If the Summarit manages that, then all things being equal, it will be a very difficult lens to resist.
 
Last edited:
J J Kapsberger said:
The probability of NB23 being provoked at this point is 95% (plus or minus 5% 19 times out of 20).

Oh, yeah. Summarits vs. Summicrons. That's what we were discussing. The only way they can improve upon the 50 Summicron is to reign in somehow it's tendency to flare when a strong light source is just outside the FOV. If the Summarit manages that, then all things being equal, it will be a very difficult lens to resist.
Click to expand...

In otherwords make the new lens behave like the ZM 50 f2 Planar :D
 
Turtle said:
In other words make the new lens behave like the ZM 50 f2 Planar :D
Click to expand...

I was afraid someone or something would invoke yet another financially crippling GAS attack! :bang:

Turtle, have you compared the flaring tendencies of the 50 Summicron and the 50 Planar? Is the Planar significantly better in terms of that?
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom