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  1. Your favorite/best filter for B&W photography?
  2. Interesting Zeiss Article about Tessar Design
  3. 21mm lenses
  4. Close up lenses and MFD
  5. When you think 1:1 is fast....
  6. classic optical formula
  7. Cine Lenses - Cooke, Zeiss etc
  8. Acmaxx Lens Armor?
  9. Summitar and Thorium versa Uranium Prints
  10. Super Fast Super Wide is not for rangefinders?
  11. Filters on Single coated lenses
  12. retrofocus lenses and RFs...
  13. Rodenstock vs Schneider vs Pentax Loupes
  14. Lens condition
  15. Lens Coatings and Colour Response
  16. Is this flare?
  17. Does anyone still use shift lenses?
  18. Why use a fast 50mm?
  19. which 21mm cv viewfinder for accuracy?
  20. Post your images taken with a 19mm~21mm lens
  21. Is this Haze, Condensation, or Coating damage?
  22. recommend me a nice slide projector
  23. Crop factor wins again
  24. Why The Plague of Longitudnal CA
  25. Contax G 35mm planar vs Hexar AF lens
  26. "Aperture chameleons"
  27. Rainbow Imaging "Wide Band Fader" adjustable ND filter
  28. Must have software for lens geeks
  29. shooting f4 with misalligned rf
  30. lens mount question
  31. Focus chart for rangefinder cameras (just print and test)
  32. fast flare free 35s
  33. How Many Photons in a Photograph
  34. There's something about the 50mm FOV...
  35. Why convertable lenses (frt interchang / bak fixed)
  36. Lens contrast: does is many any difference?
  37. W/NW 90 mm Minolta Rokkor-M
  38. bronica RF645 lenses not sharp! (diffraction test)
  39. CV 15mm vs. Velvia 50
  40. so I tried to set my RF according to the Nokton 35 and...
  41. HELP! Haze in lens, should I return? Pics inside
  42. M3 with delaminated finder experiment
  43. importance of a lens shade
  44. Filter Question- Yellow and Polarizer
  45. Need help! FotoDiox adapters
  46. What is up with this lens?
  47. Uncoated lenses
  48. It's not sharp...or is it?
  49. Bokeh and wide open performance of Heliars, Planars, Tessars, Triotars
  50. Lens with Perfect Circular Diaphragm stop down
  51. Steinheil-Munchen lenses = dating by serial # ?
  52. The highest quality for cost 50mm's
  53. what are various RF registers?
  54. X ray lenses those Exotic 0.75 and 0.95s KOWA etc
  55. measuring lines / mm at film
  56. aperture blades at 35 mm and MF lenses
  57. F3.5 100mm Canon Lens Formula
  58. Favorite 40?
  59. Should I send this Canon 50/1.8 back
  60. Perspective Distortion of Telephoto Lenses across Formats?
  61. LTM->m mount adapter question
  62. Correcting Distortion
  63. What kind of wide angle lens is resistant to flare?
  64. shaeper
  65. Replacing an Aspherical Element?
  66. Sold 2 lenses, bought 2 lenses
  67. Carl Zeiss Jena 8.5cm Triotar - but what does it fit?
  68. why are f-stops 2, 2.8, 4, 5.6, 8, 11?
  69. Why get such a fast 50mm? 50mm f1.2 vs f1.4
  70. what is the deal with chromatic aberration?
  71. What am I looking at? and how do I find more... (image intense)
  72. controlling perspective with a 28mm
  73. Help with my lens
  74. Can this be fixed (Reasonably) ?
  75. Separation or haze - that's the question
  76. Stuck adapter or M mount ?
  77. What cameras use Series Filters?
  78. LSM (M39) lens on Leica M6
  79. Bubbles or Leica Glow ?
  80. Long Lenses and DOF
  81. low contrast vs high contrast lenses on B&W film
  82. The year is 1954....
  83. diopter question
  84. Leica Lens Making Video
  85. Turret viewfinders
  86. Need Help/Feedback Please: Rear Element-Can this be cleaned up?
  87. 40mm and a 50mm?
  88. focus shift - please explain it
  89. Lens focussing errors
  90. Viewfinders of film P&S cameras: normal vs big
  91. This question pre-supposes the existence of "Leica Glow."
  92. What FL for RF vs. SLR
  93. Zeiss and Schneider designs, same?
  94. Useing my analog lens on my digicam?Is an f2 better than an f4?
  95. Budget Glass Hall of Fame
  96. Tiffen filter why uncoated, any advatage?
  97. Lens decementing and coating damage problem
  98. How is shutter speed defined really?
  99. dust
  100. Mind your Focus Shift...
  101. Hood and filter question
  102. Fixing that old glass
  103. What's your favourite lens on the Nex-5n?
  104. Loose retaining rings in B+W filters
  105. Beginner with Pentax Loupe question
  106. Is this real?
  107. 1:1 Macro Lens on APS-C Sensor
  108. Want to try filters - need a 'for dummies'
  109. Fast old wides for DSLR
  110. Industar-50, Collapsible vs Rigid depth
  111. ferider-adapted smc pentax-m 50/1.4 ...
  112. Review: ferider modified Pentax 50/1.4 in M-mount adapter
  113. developments in autofocus technology
  114. FSU LTM need adjustment for M mount?
  115. Filters
  116. How to Calculate Crop Factor, F-Stops, and Equivalent Lenses
  117. Avenon/Kobalux 21mm pouch?
  118. How far away is infinity? (optically speaking, of course)
  119. Some lenses tested on a Chinese website
  120. 'C' mount lenses
  121. Why is 24/25mm better than 28mm?
  122. Does your Summicron focus-shift?
  123. Flat lens offers distortion free images
  124. What did you do with your high end enlarging lenses?
  125. Fader ND filters
  126. How to figure out flange focal distance? [Focomat 2c]
  127. 15mm vs. 21mm
  128. What if
  129. fotodiox adaptors for EOS EF-M mount
  130. What's better than Autofocus and manual focus?
  131. Which 50mm!?!?!
  132. Do you mix and match your lens brands?
  133. Lens wisdom of the day (the century)
  134. Barry Lyndon Zeiss 0.7/50 write-up
  135. 50mm with character?
  136. why do elements seperate?
  137. why can't you evaluate flare and bokeh in the viewfinder?
  138. Helicoid 13-17mm to short.
  139. What to do with hazy lenses
  140. Lenses for Curved Screen Projection
  141. Does it make sense to replace single 35 with 28 + 50?
  142. ID this mount?
  143. Focus accuracy on film vs. digital
  144. focus shift basic question
  145. Best 21mm lens for infrared photography
  146. 'Front cell' vs 'unit' focussing
  147. Differences in lens characteristics and performance
  148. Elmar Vs. Tessar or why did the Tessar conquer the world?
  149. 40mm lenses: why are they so small?
  150. DIY 35mm lens test on Fuji, Summilux and Summicron
  151. A fuzzy question
  152. Cooke Triplet lens - any for M's
  153. Film lenses and mirrorless digital
  154. sonnars and focus shift
  155. Low Contrast Lens:High Contrast Scene?
  156. Fast Sonnar Clone Shootout - Canon, Jupiter, Nikkor
  157. Radioactive lenses and Geiger counter
  158. Tessar (type and triplet) front element focusing - focus shift
  159. Determining Lens Hood Dimensions
  160. The making of a custom lens mount
  161. how to check for vignetting (from hood/filters)
  162. Front cell focusing revisited
  163. Can I see "bad" bokeh...
  164. has anyone converted their Hexar AF lens to M-mount?
  165. Stepless aperture lenses
  166. Kubrick exhibition at LA County Museum
  167. Soft or Sharp
  168. What lens type causes the "circular" blur/bokeh?
  169. f/22 & f/32?
  170. What dipoter do I need?
  171. Do you try to match signatures with your lens kits?
  172. Crop question....
  173. uv/ir on film cameras?
  174. Petzval Lens
  175. Extending Eye Relief
  176. BBC: The Perfect Lens
  177. Make a correction table for your rangefinder.
  178. Impact of aperture on distortion. I don't get it!
  179. Agonizing about lenses: 4 friends in their 50s
  180. Lens Internal Crack (Delamination)
  181. 35/1.4 shootout - Nokton MC vs SC vs Summilux FLE vs Canon LTM
  182. Colour vs B&W: why is there any difference?
  183. DIY Lens Testing Help
  184. "Rendering" vs Sharpness
  185. Film and digital resolution compared
  186. Best 50mm for f8-f16
  187. About aperture and shutter.
  188. 21mm vs 25mm distortion on a 1.5 crop factor sensor
  189. Vignetting: Is it a dirty word?
  190. Sony Lens Designer Discusses FE Design
  191. Summicron 35mm v4 vs. Asph
  192. Sony Curved FF Sensor
  193. What is going on here? Chromatic Ab? Flare? (Tessar photo attached)
  194. "Who killed infinity focus"
  195. Why is f/2 dimmer than f/2.8 on a Zuiko lens?
  196. Does the glass matter?
  197. the right cement for doublets
  198. "Old" lenses difference for b/w film scans and prints.
  199. Is dust bad?
  200. Speaking about design, what does close to zero distortion imply?
  201. Rangefinder equivalent base length for critical focus
  202. How drastically protected are old lenses' designs?
  203. & normal Pentax K mount lenses compared for bokeh.
  204. Is there a filter that will "create" B+W images on color film?
  205. Is the Rokkor M 90 a scaled down Tele Elmarit?
  206. Bubbles in lens element
  207. Auxiliary Lenses for fixed lens cameras?
  208. Low frequency spatial resolution?
  209. Modern (flat) rendering vs. classic (full of character) rendering
  210. 35/1.4 shootout take II
  211. Thorium glass
  212. Fast Moderate Wides, Focus Shift and Pixel Peeping
  213. what does this mean to photography?
  214. Focussing with varifocal eye glasses
  215. 50mm / 40mm / 35mm close focus shoot out
  216. Reversed front element: what other mods to explore?
  217. Wratten Filter Question
  218. Lens variance
  219. Summicron 50/2 vs Nikkor 50/2 comparison
  220. FFD Question (Flange Focal Distance)
  221. Effects of repositioning rear lens element
  222. What do these numbers mean? Lens Resolving Power lp/mm
  223. 28mm Lens comparison: Sony vs. Leica vs/ Voigtlander
  224. Leaf shutter
  225. The lack of 3D information in modern corrected lenses?
  226. Lens contrast vs digital contrast