Burkey
Well-known
Socke - thanks. I appreciate the help.
S
Socke
Guest
As I learned that in german, I had to look it up in wikipedia.
b is the base lenght, a is the distance and A is the angle which we measure when we focus the lens.
As you can see the angle A would be closer to 90° with a shorter base length or with a larger distance. So to measure large distances acuratly the base length must be longer. With a diminishing viewfinder, i.E. fractions of 1 magnification, you measure A with less acuracy, it's probably best compared to measuring a distance with a caliper (lager magnification) or with a yardstick (low magnification).

b is the base lenght, a is the distance and A is the angle which we measure when we focus the lens.
As you can see the angle A would be closer to 90° with a shorter base length or with a larger distance. So to measure large distances acuratly the base length must be longer. With a diminishing viewfinder, i.E. fractions of 1 magnification, you measure A with less acuracy, it's probably best compared to measuring a distance with a caliper (lager magnification) or with a yardstick (low magnification).
Bromo33333
Established
clintock said:I really don't think we'll be seeing a blgger base length with the current Leica-CL-finder-grafted-onto-a-slr-body franken-camera bessa. Not without doing something radical like actually designing the camera from the get-go as a proper rangefinder. But then that's the new Zeiss.
That would be like volkswagen making an expensive deluxe luxury car to compete against the Audi A8.. when they own Audi.
And yet ... VW did with the Phaeton...
Here's hoping the Voigtlander improves the baselength! If VW can do it so can you!
Trius
Waiting on Maitani
Any other changes, Brett?
BillBingham2
Registered User
Here is a great site on what EBL means in real life
http://www.imx.nl/photosite/leica/technics/rfaccuracy.html
Other info
http://www.imx.nl/photosite/leica/technics/rfengineering.html
B2 (;->
http://www.imx.nl/photosite/leica/technics/rfaccuracy.html
Other info
http://www.imx.nl/photosite/leica/technics/rfengineering.html
B2 (;->
FrankS
Registered User
Trius said:Any other changes, Brett?
Just the hybred shutter that I mentioned before.
FrankS
MtnPhoto
Grasshopper
R4A Deposit
R4A Deposit
I placed an order with Cameraquest earlier this evening and put a deposit on an R4A
. Now all I have to do is wait 6 months :bang: .
R4A Deposit
I placed an order with Cameraquest earlier this evening and put a deposit on an R4A
BillBingham2
Registered User
Do you get free shipping?
MtnPhoto
Grasshopper
I am outside the free shipping window by a day. I was planning a trip to CA in the spring so the shipping will not be to bad.
Sonnar2
Well-known
You cannot have all in one camera. If you need maximum focus accuracy buy a R3 (M or A). The R4 is for wideangles. Probably not best suited for the 35/1.2
But with the pictures, I wonder how far the 35/1.2, or any other big lens with hood will shade the 0.52x finder....
But with the pictures, I wonder how far the 35/1.2, or any other big lens with hood will shade the 0.52x finder....
phototone
Well-known
back alley said:that pic looks 'scrunched' to me.
Common product photography technique to get parallel verticals. View camera technique, Camera and lens parallel with subject, camera back shifted (up or down) to place subject in frame. This causes the "scrunched" effect you see, but there is no "keystoning" of verticals.
Same technique can be used in Photoshop with scans or digital files, if one doesn't have a view camera with movements.
phototone
Well-known
Since many wideangle lenses are "guess focused" for speed in shooting, due to their enormous depth-of-field, the main advantage of these cameras is having a built-in viewfinder, parallex corrected for shooting with these wide-angles. The focusing RFDR is just an added perk. I wouldn't be too concerned with focusing accuracy unless you plan to also use long lenses with auxiliary finders.
ywenz
Veteran
I wonder if I'm able to downgrade from an M6 to Bessa R4A, in terms of build quality and feel that is.. Or should I just own both?
Trius
Waiting on Maitani
Hmmm. Not being an M6 owner, who am I to have an opinion? But having held one and looked through the viewfinder
, I'd say keep it and buy an R4 to go with it. Use the Bessa for wider angle.
Nachkebia
Well-known
WOW! what a fanstastic camera! I just read about it! I love it! I mean you can 21mm rangefind it one! but more important you can see and compose 28mm or 25mm! just like 35mm! Added to my and only shoping list for christmass 
WOW WOW WOW! I am very happy! what an excellent camera! when it will be out?
This will be a perfect match for 28mm ASPH!
WOW WOW WOW! I am very happy! what an excellent camera! when it will be out?
This will be a perfect match for 28mm ASPH!
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peter_n
Veteran
Yes I wonder about this too, I think your concern is legitimate. I'm very interested in this camera for a Leica 24mm/f2.8 lens and my M-Hexanon 28. Both of those lenses have fairly wide diameters and I too am concerned about them occluding the VF.Sonnar2 said:But with the pictures, I wonder how far the 35/1.2, or any other big lens with hood will shade the 0.52x finder....
In response to another poster above, I'm thinking about maybe selling my backup M6TTL (in the shop at the moment) in part to buy this camera. I'm not using the M6TTL any more but I would use the R4A. I need to work more with my 24mm and it's viewfinder before I plunk down a deposit.
Frank K
Member
I was thinking about the ZI SW. But when news of the R4M came out, I sent my $100 deposit to Stephen Gandy. Now the long wait...
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