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  1. What is an "infinity lock"?
  2. Focal length, aperature, distance from film plane!
  3. how special of leica glass?
  4. Sean Reid's Comparison of 75mm lenses
  5. This Asian website might be of interest to lens aficionados
  6. Is this a coated lens?
  7. Stiff focusing Ring
  8. Xenon, Leitz and Schneider
  9. I'm in a lens quandary and need a push.
  10. To tab or not to tab, that is the question
  11. 135mm RF lenses - used a lot?
  12. Getting around myopia...
  13. Lens compatibility: ZF to ZK
  14. 35mm lenses are cool
  15. New camera No lens
  16. filter adapters and flare
  17. ???price for 50 cron DR???
  18. Care to outbid me?
  19. Image size calculation
  20. Zeiss TF or FT coated lens...
  21. lenses finder film size conversion table...
  22. LTM lens test of 50mm lenses w/ MAX 800
  23. Scrolling framelines, too hard to create?
  24. moving from 50 to 35mm as fav
  25. 75mm too long for every day use?
  26. ZM 28mm vs. Elmarit 28mm. Am I crazy?
  27. this feeling...
  28. Ektar vs Planar T*
  29. CV 25mm Color Skopar vs Zeiss ZF 25mm, anyone??
  30. Favorite Fast Screwmount Lens <$1000
  31. Forget about rendition...
  32. 35mm: Summicron-M vs. Nokton 1.4?
  33. 35mm Hexanon or Summicron?
  34. Canon RF 50/f1.2 disassembly thread?
  35. Robot-Leica adapter?
  36. 28mm competition: VC 1.9 vs Hexanon
  37. So show me a REALLY DISTINCTIVE 28mm M/LTM
  38. ANGENIEUX - Why so expensive?
  39. question for the optics / lens gurus
  40. Haze... What is it?
  41. Looking for mates to Summar 50/2
  42. Why coating on the front element?
  43. Future of the 50 lens
  44. What is the good Humidity (RH%) for RF camera, and Lens.
  45. Fast 35: canon 1.5 or Nokton 1.4?
  46. Zx
  47. Do you like to use the 21mm focal length?
  48. Lens gurus: is this bulls**t?
  49. Ring lens m42/m39
  50. Built my first hybrid lens!
  51. lens barrel won't focus to infinity mark
  52. Conversion A 2x filter
  53. Will this affect image quality?
  54. Focal Length Comparison Tool
  55. NY Times article about old lenses on digital cameras
  56. Leica grabs bragging rights with `fastest' lens
  57. is f2 fast enough?
  58. is it possible to fix this mess?
  59. 40 mm lens okay for portraits?
  60. Focal Length Distance Equivalency?
  61. slr lenses (nikon 50mm 1.2 for eg) on m mount camera???
  62. still trying to get my nikon lenses on my r-d1
  63. Help with lens evaluation please.
  64. CV 35mm f1.7 Ultron VS Zeiss 35mm f2 ZM
  65. Is there a Perfect Lens for RF?
  66. Summicrons F-value?
  67. Tony Lovell's Homemade 914mm f3.2 lens
  68. Rub marks, but will not affect images !
  69. Why no 28/1.4's?
  70. Yeah, but will it fit on my Leica?
  71. A question about stars
  72. A 1969 test of four fast lenses, including Nikkor and Noctilux
  73. Low contrast lenses and high contrast film?
  74. Low Contrast Lenses:
  75. Saving a lens
  76. What is a 28mm lens good for?
  77. An excellent, small but slow 50 lens?
  78. Laser accessory range/distance finder
  79. Best every day lens
  80. It's just a scratch...
  81. Canon Lens Production video
  82. 12mm Helier - loose/rattling
  83. Would this affect image quality? (rear element chip)
  84. Determining Focal Length
  85. Best old classics or new one little like old?
  86. How to spend $1000 on glass
  87. Value of Summilux - M 1:1.4 / 50mm Asph LHSA Special Edition
  88. Worst ever seen Lens.
  89. UN-coated LTM 50s?
  90. Which 90mm - purchasing artistic ability...
  91. Tomorrow's Miracle Lens Today! (Zunow f/1.1, circa 1958)
  92. The golden ratio and angle of views on lens
  93. A question for Zeiss lovers
  94. Are those expensive UV filters worth it?
  95. Best filters for a particular situation?
  96. Why so few fast ultra-wides/teles?
  97. filters; yes, or no?
  98. What is that diagonal formula ?
  99. Leica glow AND nice bokeh AND micro-contrast 3D. Is it a unicorn?
  100. Faster wides in LTM
  101. What Filters?
  102. Tilt-shift on rangefinders, or alternatives
  103. Voigtlander 35 f/1.2 or Pre ASPH Leica 35 f/1.4
  104. couple of very old photos from Japan
  105. resilvering Accura brightline finder
  106. Best 'portrait' 50mm lens
  107. In 2009 I want a . . . .
  108. collimative question
  109. Shutter release built into the lens?
  110. List of Sonnar Lenses
  111. Jupiter 1.5
  112. viewfinder images of different cameras
  113. Image Quality: Print v. Scan?
  114. UV Filter: Can It Be A Cheapo One ?
  115. More 'versus' : 50 Nokton, DR Summicron
  116. Zuiko 42/1.7 from SP adapted to M?
  117. What is the difference, really, between f/1.2 and f/1.4 ?
  118. I'm trying to understand Color
  119. Hyperfocal Focusing: Do's and don'ts?
  120. Cleaning lenses - breath
  121. Brutally sharp in a budget?
  122. looking through a lens element
  123. Treatment for fungus?
  124. ND filters
  125. heresy: using a lens pen on a scratched lens?
  126. Filter for CV 40/1.4 SC and Leica M6
  127. Is this a Lens Defect at the rear?
  128. Could you please Identify lens?
  129. 28mm viewfinders
  130. Next generation mirrors and the implication of new wide angles
  131. which lens 45mm clamp-on size
  132. Sonnar Lens Design Appeal?
  133. Apperture ring wiggle - how normal?
  134. Who Still Uses a Fish-Eye Lens?
  135. What makes a lens's focal length?
  136. Infra-red filter
  137. 50mm lens
  138. Single element, uncoated, fixed aperture 50?
  139. Which 135mm on an M6?
  140. Testing four RF 50mm lenses
  141. Compare CV 50/1.5 and Canon 50/1.4?
  142. Bigger is not better: a rant about lens manufacturers
  143. Really odd bokeh on 24
  144. hyperfocal infinity mark
  145. How do you feel about 24mm (84 diagonal)?
  146. UV/IR filter and classic b&w ?
  147. Voigtlander 1.5/50 Nokton vs. Jupiter 3
  148. Leica diopter
  149. How should I test a lens?
  150. SLR Lenses and RF Lenses: Differences?
  151. Eye-borg - Next Level In Camera Tech
  152. question re. megaperls mag for rd1
  153. Lenses that were modified to be LTM
  154. Canon 50mm f1.4 (Not sure if posting in right forum)
  155. Zeiss Contax 45/2 Planar vs. Pentax 43/1.9 Limited
  156. Unusual lens mount - what might it fit?
  157. One for Brian Sweeney!
  158. 35mm Ultron
  159. Converting S mount to LTM
  160. 60mm lens?
  161. The Ground Glass & The Focusing Screen
  162. J-12 for street photography
  163. Looking for CV 12 or 15mm lense in NJ/NY
  164. Sharpest 135mm
  165. 50/f2.0 Heliar compared to 50/f1.5 Nokton
  166. hand holding polarizer
  167. A small, light and fast 85mm
  168. Is it easy to adjust the apeture ring on a summicron?
  169. What are the symtoms of a lens that is out of alignment?
  170. Does 50/1.4 DOF = 100/2.8 DOF?
  171. What are the (subtle) difference?
  172. Hasselblad Planar vs. Rolleiflex Planar
  173. flash , polaroid back,digital camera
  174. Triplet VS. Tessar on a 2 1/4 folder (??)
  175. Small nick in lens
  176. How do you clean your lens and filter?
  177. wipe marks; what is the effect?
  178. Favorite Focal Length For Landscapes
  179. Diffraction and f stops
  180. uncoated lens best for Infra Red!!
  181. Smallest, lightest Leitz 50mm?
  182. Multi-coat UV/protective filters, Multi-part question
  183. Slow Zuiko lens 1.8
  184. Strange softness with a Russian lens.
  185. Petzval, Hemispherique Rapide, etc?
  186. using filters for bw ?
  187. is it ok to use uv-ir cut filter with 50mm?
  188. The f-stop mystique - a question for optical engineers or the tech-savvy
  189. which focal length for nice portraits
  190. where can i get the new wide heliar 15mm?
  191. Hexar AF lens remounted for M-mount
  192. M-Rokkors vs Zeiss ZMs
  193. a quarter of a stop faster.... difficult or gimmick?
  194. Is a 40mm lens the sweet spot?
  195. Optomet Filters
  196. Enlarging Lenses on a RF...
  197. Lens flare in the new Star Trek movie
  198. another crazy idea
  199. 40/2.8 Rollei Sonnar vs. 35/1.4 Nokton SC
  200. confused: UV filter vs skylight filter?
  201. f-stop question
  202. lightmeter doesn't recognize contrast filter!
  203. why UV filter?
  204. Elmarit 21mm, what is this, issue?
  205. leica 35mm Summicron ASPH black-out
  206. Wide angle lens better on Rf or SLR?
  207. my new Nikkor 35/1.8 threadmount
  208. Opposite of close-up filter?
  209. Using Filters on un-coated lenses - asking for MORE flare ?
  210. Anyone know what a Leitz New York "H" filter is?
  211. Weird Summaron Field Curvature?
  212. How do you envision depth of field with a RF camera?
  213. Sometimes I wonder...
  214. Amazing Bokeh and Resolution from a Helios 103!
  215. Red Dot Glue
  216. Lens from Minolta TC1
  217. Understanding RF magnification
  218. How to figure out your lens focal length using Cheeto's
  219. Glow vs. 3D
  220. Lens Generations, Imitation and Originality
  221. If you're looking for some serious Asian old lens aficionados and images
  222. COOKE AMOTAL ANASTIGMAT 2,5" F", filter size?
  223. Different formats and DOF
  224. Some pages from old old magazines
  225. Which bodies DON'T take collapsible lenses?
  226. Why there isn't an F/1 Sonnar?
  227. Why is contrast good in a lens?
  228. leica mount macro lenses
  229. 50mm AA
  230. Kobalux and VC both 28mm, f3,5 any experiences?
  231. Filters for vintage look
  232. Lenses Vs. Fongus!!! is it possible to be clean
  233. CV, ZM & Canon 50/1.5s
  234. Does the brand of UV filter matter?
  235. Anyone used 7dayshop.com filters?
  236. super wides: 15mm and 18mm M mount lens
  237. Infra red focusing with Apochromatic lenses
  238. Generic ebay cokin filters?
  239. A Ken Rockwell lens and focusing quote
  240. Filter for non-coated lens
  241. Recycling optical elements, lens design 101
  242. convert M mount to LTM?
  243. Question about aperture and depth of field
  244. Shooting in 50mm
  245. Jupiter 37a CLA (135mm)
  246. Kodak Series "N" filters -- what are they good for?
  247. Spiratone Portragon 100mm f/4
  248. Recommend a cheap 35mm & 90mm in M or LTM mount
  249. Interesting Development from Sony
  250. Tell me what UV filter to get for CV35/2.5