nayvinchew

@ nayvinchew -- I was able to view your image. Seeing the picture did not change my mind. I am still recommending re-fixing for your films and that future films be processed using a longer developing time. Why not re-fix and re-wash and report results. Also, tell us the developer you are using and solutions temperature and immersion times.

Thank you! I will do that and report back. I am using unicolor c41 kit. at 102F, immersion time of 3.5 min in developer and 6.5 min in blix

We were not able to see your posted sample however, lack of uniformity is common. Most images that suffer from a lack of uniformity are difficult if not impossible to spot due to the busy nature of the subject matter. Blue sky can be quite mundane thus is shows this defect readily. First rule out improper fixing. Re fix and re-wash exiting negative to make sure the fix is not responsible. If this does not remedy, try increasing developing time. Development is an infusion of chemicals that preform this task. Lower the solution temperature, this will allow a longer developing time and this may do the trick. If the developer you are using is too strong, developing time might be too short. Change to a different developer that features a longer developing time or dilute your current formula to allow lengthening time in fluid. Hope this helps.

I have posted the file. Thanks for the reply. Maybe seeing the image can give you a better idea.

Hello. Your picture is not showing. See about getting it within the 1k pixel sizing & repost. What is the "other forum". . ?? Aloha, Bill

I have posted the file. Thank you and the other forum is "large format photography forum"

sorry. here is the file

I have began developing my own film at home, 4x5, in trays and been experiencing what seems to be uneven development but only in the skies. It may be in other areas but I cannot see it. It is very apparent in the skies. I presoak in water and constantly agitate in the developer. I am running out of ideas. Any input will be greatly appreciated!

I have attached an example. I brought down the highlights and raised the contrast to exaggerate the problem.

http://www.largeformatphotography.info/forum/attachment.php?attachmentid=178917&d=1528069627

I posted it another forum and some have suggested chemical carryover, humidity, and blix problem. Wanna see if someone can provide more insight here.

Thanks!!