Difference between revisions of "Cosina CT-1A"
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| − | |image_source= http://www.flickr.com/photos/ | + | |image_source= http://www.flickr.com/photos/collection-appareils-photos-bernard/9512486635/in/pool-camerawiki/ |
| − | |image= | + | |image= http://farm8.staticflickr.com/7364/9512486635_cf2761458b.jpg |
|image_align= right | |image_align= right | ||
|image_text= Cosina CT-1A | |image_text= Cosina CT-1A | ||
| − | |image_by= | + | |image_by= Bernard Faure |
|image_rights= with permission | |image_rights= with permission | ||
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| + | The '''Cosina CT-1A''' is a manual-focus 35mm [[SLR]] from [[Cosina]].<ref> It appears to have been [https://www.flickr.com/photos/vox/51261978691/in/pool-camerawiki/ announced in late 1980], and was going on sale by the time of [https://books.google.com/books?id=C2tHd0-73sgC&lpg=PA222&dq=Cosina%20CT&pg=PA222#v=snippet&q=%22For%20beginners,%20the%20CT-IA%22&f=false this news item about Cosina introductions] in the April 1981 ''Popular Photography'', pg. 222, via [https://books.google.com/books Google Books].</ref> It accepts [[K mount]] type lenses. It is nearly the same as the [[Cosina CT-1]] but replaces that model's analog meter needle with a match-LED exposure indicator ( + O - ) at the side of the viewfinder. This also necessitated the use of two LR44 or SR44 batteries, rather than the single mercury cell of the earlier model.<ref>A green LED requires about 2.0 volts to light up; a single mercury cell only provides 1.35v.</ref> | ||
| − | The | + | The CT-1A has a vertically-traveling [[focal plane shutter]] with speeds from 1s to 1/1000 with B. [[Flash sync]] is at 1/125 a sec. The [[self-timer]] is mechanical with a delay of approx 10 sec. It features a open-aperture TTL metering in a center-weighted pattern, utilizing two [[CdS]] cells. The meter has a range of 3 to 18 [[EV]] at (ASA 100). Film speeds from 25 to 1600 ASA can be set on the ring surrounding the rewind crank. |
| − | + | Following the CT-1A Cosina offered two models: the [[Cosina CT1G | CT1G]] is essentially the same as the CT-1A but without a self-timer (and at one time the two were included in the same owners manual); while the [[Cosina CT1 Super | CT1 Super]] increases its top shutter speed to 1/2000 second. Both of the latter models also add an angular plastic handgrip. | |
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| + | ==Notes== | ||
| + | <references/> | ||
==Links== | ==Links== | ||
| − | * [http://www.butkus.org/chinon/cosina/cosina_ct-1a/ct-1a-splash.htm Cosina CT-1A manual] at [http://www.orphancameras.com Mike Butkus Orphan Cameras] | + | * [http://www.butkus.org/chinon/cosina/cosina_ct-1a/ct-1a-splash.htm Cosina CT-1A manual] (multilingual) at [http://www.orphancameras.com Mike Butkus Orphan Cameras] |
| − | [[Category:Japanese 35mm SLR]] [[Category:Cosina]] | + | * [https://www.butkus.org/chinon/cosina/cosina_ct1a_1g/cosina_ct1a_1g.htm Combined CT-1A/1G manual] (multilingual) at [http://www.orphancameras.com Mike Butkus Orphan Cameras] |
| + | * The New York retailer 'Photron' briefly promoted Cosina as a brand, and [https://books.google.com/books?id=wKwkwoFbNjQC&lpg=PA1&vq=kobayashi&dq=Cosina&pg=PT77#v=onepage&q=kobayashi&f=false listed the CT1-A (sic)<br>for USD $140 in the January 1982 ''Popular Photography'', pg. 219] via [https://books.google.com/books Google Books] | ||
| + | |||
| + | [[Category:Japanese 35mm SLR]] | ||
| + | [[Category:Cosina|CT-1A]] | ||
| + | [[Category:C|CT-1A Cosina]] | ||
| + | [[Category:K mount]] | ||
Latest revision as of 05:28, 17 February 2023
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| Cosina CT-1A image by Bernard Faure (Image rights) |
The Cosina CT-1A is a manual-focus 35mm SLR from Cosina.[1] It accepts K mount type lenses. It is nearly the same as the Cosina CT-1 but replaces that model's analog meter needle with a match-LED exposure indicator ( + O - ) at the side of the viewfinder. This also necessitated the use of two LR44 or SR44 batteries, rather than the single mercury cell of the earlier model.[2]
The CT-1A has a vertically-traveling focal plane shutter with speeds from 1s to 1/1000 with B. Flash sync is at 1/125 a sec. The self-timer is mechanical with a delay of approx 10 sec. It features a open-aperture TTL metering in a center-weighted pattern, utilizing two CdS cells. The meter has a range of 3 to 18 EV at (ASA 100). Film speeds from 25 to 1600 ASA can be set on the ring surrounding the rewind crank.
Following the CT-1A Cosina offered two models: the CT1G is essentially the same as the CT-1A but without a self-timer (and at one time the two were included in the same owners manual); while the CT1 Super increases its top shutter speed to 1/2000 second. Both of the latter models also add an angular plastic handgrip.
Notes
- ↑ It appears to have been announced in late 1980, and was going on sale by the time of this news item about Cosina introductions in the April 1981 Popular Photography, pg. 222, via Google Books.
- ↑ A green LED requires about 2.0 volts to light up; a single mercury cell only provides 1.35v.
Links
- Cosina CT-1A manual (multilingual) at Mike Butkus Orphan Cameras
- Combined CT-1A/1G manual (multilingual) at Mike Butkus Orphan Cameras
- The New York retailer 'Photron' briefly promoted Cosina as a brand, and listed the CT1-A (sic)
for USD $140 in the January 1982 Popular Photography, pg. 219 via Google Books
