The Tiffen 72mm #6 Yellow 1 Filter is a basic contrast filter, primarily for use with black and white film. This yellow filter slightly darkens skies, helps to cut through haze, and improves overall contrast. It is a common contrast filter for black and white photography, producing an accurate tonal range and partially compensating for the blue sensitivity of panchromatic film.

There is a 1.5x filter factor with this filter, requiring an increase of 0.6 stop for normal exposure. Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 10,000th of an inch, and then mounting to precision metal rings.

#6 Filter for General B&W Contrast    ColorCore Technology

Yellow contrast filter for black and white film subtly darkens skies, cuts through haze, and gives slightly greater contrast overall.

Produces accurate tones and partially compensates for panchromatic film's blue sensitivity.

Related Questions and Answers

Q: 1. What do I need to use a Nikon 5100 with this telescope?

A: You will need the Sky-Watcher S20301 M48 Camera Adaptor for Nikon BH #SKCAN • MFR #S20301 https://www.bhphotovideo.com/c/product/759388-REG/Sky_Watcher_S20301_S20301_Camera_Adaptor_for.html

Q: 2. does x40 come with any size core?

A: This listing for the Shimoda Designs Action X40 V2 Backpack (BH #SHV2AX40Y) only includes the backpack. A core unit can be purchased separately and used. The Shimoda Designs Action X40 V2 Starter Kit (BH #SHV2AX40SB) comes with a Medium DSLR Core Unit.

Q: 3. What accessory should I use to mount guiding camera or eyepiece? The focusing distance not sufficient to achieve focus...

A: This should work. iOptron TT-FTA100 Camera to Telescope Adapter BH #IOTTFTA100 • MFR #TT-FTA100 https://www.bhphotovideo.com/c/product/1160280-REG/ioptron_tt_fta100_camera_to_telescope.html

Q: 4. What accessory do I need to mount it on C11 OTA?

A: You would need this plate: https://bhpho.to/3oFrEmo In order to get the scope onto plate, please remove the Vixen style dovetail plate from the bottom of the mounting rings & mount the Losmandy DC11 dovetail plate in its place.

Q: 5. What do you need to connect a Cannon EOS 50 mark II ?

A: To mount your Canon EOS M50 Mark II Mirrorless Camera to the Sky-Watcher Evostar ED APO 72mm f/5.8 Refractor Guidescope (OTA Only) BH #SKS11180 • MFR #S11180 you will need the Explore Scientific T-Mount Adapter (2") BH #EX510365 • MFR #510365 and the Vivitar T-Mount to Canon EF-M Mount Adapter BH #VIHFT2EOSM • MFR #HF-T2-EOS-M

Q: 6. Can this be used as a guidescope with a Celestron RASA8?

A: Yes, there are additional dedicated Dovetail plates for this application, Celestron 8" Accessory Dovetail Bar for 8" RASA OTA B&H # CE8DBRASA8 MFR # 94290

Q: 7. what size filters does this scope use?

A: This Scope takes 1.25" Eyepieces. So 1.25" Filters will work on those Eyepieces.

Q: 8. For Nikon D5300 camera which T-adapter is recommend to connect the telescope?

A: Skywatcher T mount MFR# S20301 plus Celestron camera adapter MFR# 93625.

Q: 9. What accessories do I need rto connect a canon 6D Mark II?

A: To connect the Canon 6D Mark II to the Sky-Watcher Evostar ED APO 72mm f/5.8 Refractor Guidescope (OTA Only), one will need a T-mount tube to insert into the 2.0 eyepiece slot in the refractor telescope and a T-mount Canon EF-mount adapter. See below: https://www.bhphotovideo.com/c/product/261256-REG/Celestron_93419_T_Mount_SLR_Camera_Adapter.html https://www.bhphotovideo.com/c/product/1355355-REG/explore_scientific_510365_bull_nose_adapter_to_connect.html

Q: 10. Will this pack still be considered carry on? I know Explore 35 v2 is, so could this be as well?

A: While you will want to double check with the airline you are flying with, the standard carry-on size is 22 x 14 x 9". At 20.9 x 11.8 x 7.9" the Shimoda Designs Action X40 V2 Starter Kit (Black, 40L) is within standard carry-on limits.