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