I wondered how my two Retina IIc cameras with Xenon and Heligon compared, and if their accessory tele and wide lenses are usable, so I took some test shots on Efke 25. I had half the roll left, so I also tested a Ib with 2,8 Xenar and a pre-war IIa with 2,8 Xenon (the five element Xenar type, very different from the post-war double gauss Xenon). Nothing scientific, but I got the results I wanted and scanned the negs. The only sharpening is flickrs own when the pictures were automatically rezised.
Full frames:
http://farm2.static.flickr.com/1094/4731638466_935f21434c_b.jpg
IIc Xenon and Heligon 2,8/50:
http://farm2.static.flickr.com/1338/4730941041_c3ca4c6a45_b.jpg
Again:
http://farm2.static.flickr.com/1244/4730941141_7833630c1a_b.jpg
Curtar-Xenon and Heligon C 5,6/35:
http://farm2.static.flickr.com/1035/4730941195_4a46cf0405_b.jpg
Longar-Xenon and Heligon C 4/80:
http://farm2.static.flickr.com/1331/4730941357_8eff792aa6_b.jpg
Ib Xenar and pre-war IIa Xenon 2,8/50:
http://farm2.static.flickr.com/1115/4730941495_38454e968a_b.jpg
Ib Xenar and IIc Xenon 2,8/50 Edge:
http://farm2.static.flickr.com/1110/4731075015_858a0d9074_b.jpg
The largest aperture I used was 4, because it gave 1/500 and I didn't want to overexpose. I could have taken the shots indoors using a test chart or newspapers with finely printed text, but it would have been too boring...
Full frames:
http://farm2.static.flickr.com/1094/4731638466_935f21434c_b.jpg
IIc Xenon and Heligon 2,8/50:
http://farm2.static.flickr.com/1338/4730941041_c3ca4c6a45_b.jpg
Again:
http://farm2.static.flickr.com/1244/4730941141_7833630c1a_b.jpg
Curtar-Xenon and Heligon C 5,6/35:
http://farm2.static.flickr.com/1035/4730941195_4a46cf0405_b.jpg
Longar-Xenon and Heligon C 4/80:
http://farm2.static.flickr.com/1331/4730941357_8eff792aa6_b.jpg
Ib Xenar and pre-war IIa Xenon 2,8/50:
http://farm2.static.flickr.com/1115/4730941495_38454e968a_b.jpg
Ib Xenar and IIc Xenon 2,8/50 Edge:
http://farm2.static.flickr.com/1110/4731075015_858a0d9074_b.jpg
The largest aperture I used was 4, because it gave 1/500 and I didn't want to overexpose. I could have taken the shots indoors using a test chart or newspapers with finely printed text, but it would have been too boring...