CV 21 P f4

[mike_j]

I have just bought one of these and I am most disappointed with the sharpness. It's not a matter of focusing as I have used it with both M8 rangefinder and Panasonic G1 manual focusing.

What is the general experience with this lens?

 

[lawrence]

I have the LTM version and I find it sharp enough but I don't like the vignetting...

 

[Papercut]

My 21/4 is plenty sharp enough for me. (Unlike Lawrence, I don't mind the vignetting.) Perhaps you have a bad sample?

If you're using it on digital bodies, you may be seeing corner/edge "smearing" -- the rear element projects far enough into the body that light exiting the rear element hits the edges and sides of the sensor at a very low angle, leading to loss of resolution -- something which some people find objectionable even on a 2x crop sensor.

 

[kxl]

I used to have one. Nothing special, but it was good enough, especially since it wasn't a full time everyday lens for me.

I eventually got a good deal on a Kobalux 21mm, and then a ZM 21/2.8. Sold both the CV and the Kobalux and kept the ZM, which is an extraordinary lens.

 

[zleica]

I have one with LTM mount. I use it on both film (IIIG) and digital (M8) bodies. My copy is pretty sharp and I don't really have any problem.

 

[reuno]

This lens is pretty soft wide open but get sharper once stopped down.. I usually don't shoot it at f4

 

[Turtle]

My first was dire. My second is decent, but its no Zeiss ZM. At f4 its good on centre and by 5.6 razor sharp with corners continuing to improve to f8-11. I generally shoot at f8 for a good all round performance. I carry mine when I want something light in teh bottom of the bag but would prefer a ZM 21 4.5. My 2.8 ZM is superb but larger of course.

 

[24mgdriver]

I will sell my 21mm / F4 LTM with M Mount
Adapter by ebay Germany. I'm " 321pseudo "
in Original Box without Finder Make an offer